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Motorola CDM Series Detailed Service Manual
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Motorola CDM Series Detailed Service Manual

Two-way mobile radios
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CDM Series
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PRO Series
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Two-Way Mobile Radios
Detailed Service Manual
6881091C63-F

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Summary of Contents for Motorola CDM Series

  • Page 1 CDM Series ™ PRO Series ™ Two-Way Mobile Radios Detailed Service Manual 6881091C63-F...
  • Page 2 Foreword The information contained in this manual relates to all CDM Series and PRO Series models of Professional Series two-way mobile radios. This manual provides sufficient information to enable qualified service technicians to troubleshoot and repair a Professional Series two-way mobile radio to the component level.
  • Page 3 June 2010 8486207B08 (Low Band Range 2: 36–42 MHz) 8485908Z05 (Low Band Range 3: 42–50 MHz) 6881091C63-E Added new Motorola part number for parts with Sep. 2010 Fab IC from Texas. 6881091C63-F Added new tables in book: Table 3.6, 3.7, 4.6, 5.4 Aug.
  • Page 4 Notes...
  • Page 5 ™ ™ CDM Series and PRO Series Two-Way Mobile Radios Detailed Service Manual Contents Section 1: Service Maintainability Section 2: Control Head Service Information Section 3: Controller Service Maintainability Section 4: VHF (136–174 MHz) 1–25 W Service Information Section 5: UHF Band 1 (403–470 MHz) 1–25 W Service Information Section 6: UHF Band 2 (450–512/527 MHz) 1–25W Service Information...
  • Page 6 Notes...

  • Page 7: Table Of Contents

    Section 1: i Section 1: Service Maintainability Table of Contents Chapter 1 Introduction 1.0 About this Manual .....................1:1-1 1.1 Scope ......................1:1-1 1.2 Organization ....................1:1-1 1.3 Conventions....................1:1-1 2.0 Warranty and Service Support................1:1-1 2.1 Warranty Period and Return Instructions ............1:1-2 2.2 After Warranty Period ..................1:1-2 2.3 Piece Parts Availability ................1:1-2 2.4 Replacement Parts Ordering ...............1:1-2 2.5 Technical Support..................1:1-3...
  • Page 8 Section 1: ii Notes 6881091C63-F...

  • Page 9: Chapter 1 Introduction

    (available only in certain countries), and service/repair or spare parts support out of warranty. Any “return for exchange” or “return for repair” to an authorized Motorola Dealer must be accompanied by a Warranty Claim Form. Contact an authorized Motorola dealer for Warranty Claim Forms.

  • Page 10: Warranty Period And Return Instructions

    Warranty and Service Support Warranty Period and Return Instructions The terms and conditions of warranty are defined fully in the Motorola Dealer or Distributor or Reseller contract. These conditions may change from time to time, and the following subsections are for guidance purposes only.

  • Page 11: Technical Support

    Motorola provides technical support to assist dealers, distributors and self-maintained customers in resolving problems, if any, with their unit. When contacting Motorola Technical Support, keep the radio’s model number and the unit’s serial number handy. Technical support contact information is listed below.
  • Page 12 Section 1: 1-4 Radio Model Information Notes 6881091C63-F...

  • Page 13: Chapter 2 Maintenance

    Section 1: 2-1 Chapter 2 MAINTENANCE Introduction This chapter of the manual describes: preventive maintenance • safe handling of CMOS devices • repair procedures and techniques • Preventive Maintenance The radios do not require a scheduled preventive maintenance program; however, periodic visual inspection and cleaning is recommended.

  • Page 14: Safe Handling Of Cmos And Ldmos

    European Union’s Restriction of Hazardous Substances (ROHS) Directive 2002/95/EC and Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC. To maintain product compliance and reliability, use only the Motorola specified parts in this manual. 6881091C63-F...

  • Page 15: Parts Replacement And Substitution

    When damaged parts are replaced, identical parts should be used. If the identical replacement component is not locally available, check the parts list for the proper Motorola part number and order the component from the nearest Motorola Radio Products and Solution Organization listed in Appendix A of this manual.

  • Page 16: Shields

    Section 1: 2-4 General Repair Procedures and Techniques To replace a chip component using a soldering iron: Select the appropriate micro-tipped soldering iron and apply fresh solder to one of the solder pads. Using a pair of tweezers, position the new chip component in place while heating the fresh solder.

  • Page 17: Notes For All Schematics And Circuit Boards

    Unless otherwise stated, resistances are in Ohms (K = 1000, M = 1,000,000), and • capacitances are in picofarads (pF), nanofarads (nF), or microfarads (µF). DC voltages are measured from point indicated to chassis ground using a Motorola DC • multimeter or equivalent. Transmitter measurements should be made with a 1.2 µH (microHenry) choke in series with the voltage probe to prevent circuit loading.
  • Page 18 Section 1: 2-6 Notes For All Schematics and Circuit Boards BWSELECT Signal to select between the Ceramic Filter Pairs Chip Enable Line CH ACT Channel Activity Indicator Signal (Fast Squelch) CH KP ID Control Head Keypad ID (Data) Lines CH REQUEST Control Head Request from Control Head µP Clock Signal CNTLVLTG...
  • Page 19 Notes For All Schematics and Circuit Boards Section 1: 2-7 GP x OUT ACC y General Purpose Input x from Accessory Connector Pin y GPIO General Purpose Input Output Lines HANDSET AUDIO Handset Audio Output HOOK Hang-up Switch Input HSIO High Speed Clock In / Data Out First Intermediate Frequency Signal IGNITION CONTROL...
  • Page 20 Section 1: 2-8 Notes For All Schematics and Circuit Boards OPT PTT PTT from Option Board PA PWR SET ASFIC Output Voltage to set the Transmitter Power PA SWB Switches Supply Voltage for PA Current Control Circuitry PA SUPVLTG 13.2 V Supply Voltage of the Transmitter PA PCIC MOSBIAS 1 PA Bias Voltage for First Stage PRESC...
  • Page 21 Notes For All Schematics and Circuit Boards Section 1: 2-9 VCOBIAS 1 Switch Signal from Synthesizer VCOBIAS 2 Switch Signal from Synthesizer VCOMOD Modulation Signal into VCO VCTRL VCO Frequency Control Voltage VDDA Regulated 5V for Digital Circuitry in RF Section VOLTAGE SENSE Voltage Sense Line from LCD VOLUME...
  • Page 22 Section 1: 2-10 Notes For All Schematics and Circuit Boards Notes 6881091C63-F...

  • Page 23: Service Aids

    Table 3-1 lists the service tools recommended for working on the radio. While all of these items are available from Motorola, most are standard workshop equipment items, and any equivalent item capable of the same performance may be substituted for the item listed.
  • Page 24 Section 1: 3-2 Recommended Service Tools Motorola Part No. Description Application AARKN4081_ Programming Cable with Internal Programming cable with internal RIB that provides direct connection from computer to radio microphone connector AARKN4083_ Mobile Programming/Test Cable Connects radio to RIB (RLN4008_)

  • Page 25: Recommended Test Equipment

    Recommended Test Equipment Section 1: 3-3 Motorola Part No. Description Application R1427_ Board preheater Reduces heatsink on multi-level boards R1453_ Digital readout solder station Digitally controlled soldering iron RLN4008_ Radio Interface Box Enables communications between radio and computer’s serial communications adapter...
  • Page 26 Section 1: 3-4 Recommended Test Equipment Motorola Part Description Characteristics Application Number S1339_ RF millivoltmeter 100 mV – 3 VRF. RF level measurements 10 kHz – 1.2 GHz S1348_ Programmable DC power 0 – 20 VDC, 0 – 5 A, current limited Bench supply for 7.5 V...
  • Page 27 Section 2: i Section 2: Control Head Service Information Table of Contents Chapter 1 Overview 1.0 CDM750 / PRO3100 Model (GCN6112_)............2:1-1 2.0 CDM1250 / PRO5100 Model (GCN6113_)............2:1-1 3.0 CDM1550 Series / PRO7100 Model (GCN6114_)..........2:1-2 4.0 Data Radio Series (GCN6116_) ...............2:1-2 Chapter 2 Theory of Operation 1.0 Introduction .......................2:2-1...
  • Page 28 Section 2: ii Chapter 3 Troubleshooting Charts 1.0 Control Head CDM750 / PRO3100 Troubleshooting Flow Charts....2:3-1 1.1 Troubleshooting Flow Chart for On/Off ............2:3-1 1.2 Troubleshooting Flow Chart for Microprocessor ........2:3-2 2.0 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 Troubleshooting Flow Charts ................2:3-3 2.1 Troubleshooting Flow Chart for On/Off ............2:3-3 2.2 Troubleshooting Flow Chart for Microprocessor .........2:3-4...

  • Page 29: Chapter 1 Overview

    LEDs to indicate radio status, and a 14-character Liquid Crystal Display (LCD) that displays alphanumerical information (for example, channel number or call address name). The radio uses a Motorola 68HC11E9 microprocessor to control the LEDs and LCD, and communicate with the host radio.

  • Page 30: Cdm1550 Series / Pro7100 Model (Gcn6114_)

    LEDs to indicate radio status, and a 14-character LCD that displays alphanumerical information (for example, channel number or call address name). The radio uses a Motorola 68HC11E9 microprocessor to control the LEDs and the LCD, and communicate with the host radio.

  • Page 31: Introduction

    Microprocessor Circuit The control head uses the Motorola 68HC11E9 µP (U0831) to control the LEDs and to communicate with the host radio. RAM and ROM are contained within the µP. The µP generates its clock using the oscillator inside the µP along with a 8 MHz ceramic resonator (U0833) and R0920.

  • Page 32: Sbep Serial Interface

    Section 2: 2-2 Control Head (CDM750 / PRO3100) The µP’s RAM is always powered to maintain parameters such as the last operating mode. This is achieved by maintaining 5V at µP, pin 25. Under normal conditions, when the radio is off, USW 5V is formed by FLT A+ running to D0822.

  • Page 33: Status Led And Back Light Circuit

    Control Head (CDM750 / PRO3100) Section 2: 2-3 An additional pair of analog lines and A/D µP ports (PE 3 – 2) are available to support a keypad microphone, connected to the microphone connector J0811. Any microphone key press is processed the same way as a key press on a control head.

  • Page 34: Speaker

    µP will switch the radio off. Microprocessor Circuit The control head uses the Motorola 68HC11E9 µP (U0831) to control the LEDs and the LCD and to communicate with the host radio. RAM and ROM are contained within the µP itself.

  • Page 35: Sbep Serial Interface

    Control Head (CDM1250 / PRO5100 / CDM1550 Series / PRO7100) Section 2: 2-5 The µP’s RAM is always powered to maintain parameters such as the last operating mode. This is achieved by maintaining 5V at µP pin 25. Under normal conditions, when the radio is off, USW 5V is formed by FLT A+ running to D0822.

  • Page 36: Status Led And Back Light Circuit

    Section 2: 2-6 Control Head (CDM1250 / PRO5100 / CDM1550 Series / PRO7100) An additional pair of analog lines and A/D µP ports (PE 3 – 2) is available to support a keypad microphone, connected to the microphone connector J0811. Any microphone key press is processed in the same way as a key press on the control head.

  • Page 37: Microphone Connector Signals

    Control Head (CDM1250 / PRO5100 / CDM1550 Series / PRO7100) Section 2: 2-7 These voltages are required to drive the liquid crystals. The level of V5 can be measured by one of the µP’s analog-to-digital converters (U0831-20) via resistive divider R0975, R0976. To stabilize the display brightness over a large temperature range, the µP measures the temperature via analog-to- digital converter (U0831-18) using temperature sensor U0834.

  • Page 38: Passport Trunking Controller Board (Ptcb)

    Section 2: 2-8 Control Head (CDM1250 / PRO5100 / CDM1550 Series / PRO7100) 3.11 PassPort Trunking Controller Board (PTCB) PassPort is an enhanced trunking protocol developed by Trident Microsystems that supports wide-area dispatch networking. A network is formed by linking several trunked sites together to form a single system.

  • Page 39: Chapter 3 Troubleshooting Charts

    Section 2: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Control Head CDM750 / PRO3100 Troubleshooting Flow Charts Troubleshooting Flow Chart for On/Off Radio does not turn on when On/Off/Volume Knob is pressed Check / Replace R0823 Pin TAB R0822 / VR0822 / = 5V? D0822 / C0822 Press and hold...
  • Page 40 Section 2: 3-2 Control Head CDM750 / PRO3100 Troubleshooting Flow Charts Troubleshooting Flow Chart for Microprocessor Power up alert tone sounds, but Volume knob does not operate and indicator does not light up EXTAL Check / Replace U0831 Pin 31 R0831 / U0833 / U0831 = 8.00 MHz? RESET...

  • Page 41: Troubleshooting Flow Chart For On/Off

    Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 Troubleshooting Flow Charts Section 2: 3-3 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 Troubleshooting Flow Charts Troubleshooting Flow Chart for On/Off Radio does not turn on when On/Off/Volume Knob is pressed Check / Replace R0823 Pin TAB...

  • Page 42: Troubleshooting Flow Chart For Microprocessor

    Section 2: 3-4 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 Troubleshooting Flow Charts Troubleshooting Flow Chart for Microprocessor Power up alert tone sounds, but Volume knob does not operate and indicator does not light up EXTAL Check / Replace U0831 Pin 31 R0831 / U0833 / U0831 = 8.00 MHz?

  • Page 43: Troubleshooting Flow Chart For Display

    Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 Troubleshooting Flow Charts Section 2: 3-5 Troubleshooting Flow Chart for Display Power up alert tone sounds, Volume knob works, indicator/back light is on, but the display is blank V5 (against 5V) TP0973 between Check LCD Assembly -6V and -7V?

  • Page 44: Troubleshooting Flow Chart For Back Light

    Section 2: 3-6 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 Troubleshooting Flow Charts Troubleshooting Flow Chart for Back Light Power up alert tone sounds, Volume knob works, indicator lights up, display works, but back light does not turn on U0831 Pin 58 Check for short...
  • Page 45 Section 2: 4-1 Chapter 4 CONTROL HEAD PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Table 2-1 Control Head CDM750 / PRO3100 Diagrams and Parts Lists PCB 8486146B07: Page: Main Board Top Side 2: 4-3 Main Board Bottom Side 2: 4-3 SCHEMATICS: Sheet 1 of 2...
  • Page 46 Section 2: 4-2 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...

  • Page 47: Control Head Cdm750 / Pro3100 Pcb 8486146B07, Schematics, And Parts Lists

    Control Head CDM750 / PRO3100 PCB 8486146B07, Schematics, and Parts Lists Section 2: 4-3 Control Head CDM750 / PRO3100 PCB 8486146B07, Schematics, and Parts Lists D0877 D0878 D0879 D0873 D0872 S0865 S0866 R0823 D0886 D0884 JU0853 JU0852 D0874 JU0854 D0871 D0875 D0876 S0864...
  • Page 48 Section 2: 4-4 Control Head CDM750 / PRO3100 PCB 8486146B07, Schematics, and Parts Lists J0801 CONTROL HEAD CONNECTOR VR0823 C0811 VR0811 C0810 C0843 C0813 470pF 5.6V R0811 470pF 470pF 470pF J0801-14 R0810 J0801-13 EXT_KP_COL J0811-10 EXT_KP_COL R0812 J0801-12 SCI_TX WARIS FLT_A+ J0811-1 FLT_A+...
  • Page 49 Control Head CDM750 / PRO3100 PCB 8486146B07, Schematics, and Parts Lists Section 2: 4-5 FLT_A+ D0885 INT_KP_COL D0886 green green R0867 R0866 D0884 D0888 green green R0861 D0881 D0887 green green INT_KP_ROW 1 P1 1 P1 S0861 S0865 Q0881 Q0885 5 P5 5 P5 4 P4...
  • Page 50 TANT CP 2.2uF 10% 10V R0815 0662057A76 13k 1/16W 5% C0823 2113741F49 10nF 50V R0816 0662057A90 51k 1/16W 5% * Motorola Depot Servicing only C0824 2113741F49 10nF 50V R0821 0662057A73 10k 1/16W 5% C0831 2311049A42 TANT CP 3.3uF 10% 6V...

  • Page 51: Control Head Cdm1250 / Pro5100 / Cdm1550 Series / Pro7100 Pcb 8486155B06, Schematics, And Parts Lists

    Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 PCB 8486155B06, Schematics, and Parts Lists Section 2: 4-7 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 PCB 8486155B06, Schematics, and Parts Lists D0879 D0880 D0877 S0854 U0834 H0971 R0823 S0853...
  • Page 52 Section 2: 4-8 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 PCB 8486155B06, Schematics, and Parts Lists WARIS GM300 J0801 CONTROLHEAD J0801-14 CONNECTOR J0801-13 J0811 MICROPHONE J0801-12 SCI_TX CONNECTOR VR0811 J0801-11 P0801-1 C0808 82pF VR0812 J0801-10 P0801-2 R0811 5.6V Shown from Front Side C0810...
  • Page 53 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 PCB 8486155B06, Schematics, and Parts Lists Section 2: 4-9 KEYPAD B LAYOUT SW0902 SW0910 SW0906 ROW1 SW0903 SW0908 SW0905 S0901 S0902 S0903 SWITCH SWITCH SWITCH ROW2 KEYPAD C LAYOUT R0901 SW0906 SW0904 SW0902...
  • Page 54 Section 2: 4-10 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 PCB 8486155B06, Schematics, and Parts Lists BACKLIGHT GREEN BACKLIGHT RED Q0931 Q0933 FLT_A+ FLT_A+ D0969 D0973 D0977 D0981 D0985 D0931 D0935 D0939 D0943 D0947 D0951 D0955 D0965 D0961 R0931 R0941...
  • Page 55 Control Head CDM1250 / PRO5100 / CDM1550 Series / PRO7100 PCB 8486155B06, Schematics, and Parts Lists Section 2: 4-11 DISPLAY THE LCD IS PART OF HARDWARE KITS GLN7358A (EUR) AND GLN7359A (US) H0971 04B01 SED1526F0A U0971 RESET C0972 CH_KP_ID(0:7) C0971 R0973 TP0973 C0984...
  • Page 56 Not used in Control Head B C0975 2113743E20 100nF 16V J0801 0902636Y02 CONNECTOR FLEX 12 PIN R0859 0662057A89 47k 1/16W 5% * Motorola Depot Servicing only C0976 2113743E20 100nF 16V J0811 2864287B01 CONN TELCO 10 PIN JACK R0860 0662057A97 100k 1/16W...
  • Page 57 Section 3: i Section 3: Controller Service Maintainability Table of Contents Chapter 1 Theory of Operation 1.0 Controller Circuits .....................3:1-1 1.1 Overview......................3:1-1 1.2 General......................3:1-1 1.3 Radio Power Distribution ................3:1-2 1.4 Electronic ON/OFF ..................3:1-4 1.5 Emergency ....................3:1-4 1.6 Mechanical ON/OFF..................3:1-5 1.7 Ignition ......................3:1-5 1.8 Microprocessor Clock Synthesizer ..............3:1-5 1.9 Serial Peripheral Interface (SPI)..............3:1-6 1.10 SBEP Serial Interface..................3:1-7...
  • Page 58 Section 3: ii 5.0 Controller T11 Schematics and Parts Lists.............3:3-33 6.0 Controller T12 Schematics and Parts Lists.............3:3-39 7.0 Controller T12 Schematics and Parts Lists (8471224L04) ......3:3-46 8.0 Controller T6/T7 Schematics and Parts Lists (8471235L06) ......3:3-56 6881091C63-F...

  • Page 59: Theory Of Operation

    MUX ICs, the On/Off circuit, and general purpose Input/Output circuitry. The controller uses the Motorola 68HC11FL0 microprocessor (U0101). The controller also has three external memory devices. These devices consist of a 32 kByte SRAM (U0122), a 512 kByte FLASH EEPROM (U0121), and a 16 kByte EEPROM (U0111).

  • Page 60: Radio Power Distribution

    Section 3: 1-2 Controller Circuits External To Synthesizer Microphone Internal Microphone 16.8 MHz Reference Clock Audio/Signaling from Synthesizer Architecture External Speaker Recovered Audio Audio ASFIC_CMP Internal from Synthesizer Speaker Section (5V_RF) µP Clock To RF Section SCI to Accessory & Control Head Digital Connector...
  • Page 61 Controller Circuits Section 3: 1-3 Transistor Q0681 and resistors R0681 / R0682 divide the regulated 9.3V down to about 6 volts. This voltage supplies the 5V regulator, located on the RF section. By reducing the supply voltage of the regulator, the power dissipation is divided between the RF section and the controller section. The voltage VSTBY, which is derived directly from the supply voltage by components R0621 and VR0621, is used to buffer the internal RAM.

  • Page 62: Electronic On/Off

    Section 3: 1-4 Controller Circuits Electronic ON/OFF The radio has circuitry which allows radio software and/or external triggers to turn the radio on or off without direct user action (for example, automatic turn on when ignition is sensed and off when ignition is off).

  • Page 63: Mechanical On/Off

    Controller Circuits Section 3: 1-5 Mechanical ON/OFF This refers to the typical On/Off/Volume knob, located on the control head, and which turns the radio on and off. If the radio is turned off and the On/Off/Volume knob is pressed, line ON OFF CONTROL (J0401 pin 11) goes high and switches the radio’s voltage regulators on as long as the button is pressed.

  • Page 64: Serial Peripheral Interface (Spi)

    Section 3: 1-6 Controller Circuits synthesizer is changed in small amounts if there is a possibility of harmonics of the clock source interfering with the desired radio receive frequency. The ASFIC CMP synthesizer loop uses C0245, C0246 and R0241 to set the switching time and jitter of the clock output.

  • Page 65: Sbep Serial Interface

    Controller Circuits Section 3: 1-7 1.10 SBEP Serial Interface The SBEP serial interface allows the radio to communicate with the Customer Programming Software (CPS), or the Universal Tuner via the Radio Interface Box (RIB) or the cable with internal RIB. This interface connects to the microphone connector via control head connector (J0401-8) and to the accessory connector J0501-17 and comprises BUS+.

  • Page 66: Normal Microprocessor Operation

    Section 3: 1-8 Controller Circuits 1.12 Normal Microprocessor Operation For this radio, the µP is configured to operate in one of two modes, expanded and bootstrap. In expanded mode the µP uses external memory devices to operate, whereas in bootstrap operation the µP uses only its internal memory.

  • Page 67: Flash Electronically Erasable Programmable Memory (Flash Eeprom)3:1

    Controller Circuits Section 3: 1-9 There are 8 analog-to-digital converter ports (A/D) on U0101. They are labeled within the device block as PE0-PE7. These lines sense the voltage level ranging from 0 to 5 V of the input line and convert that level to a number ranging from 0 to 255 which can be read by the software to take appropriate action.

  • Page 68: Static Random Access Memory (Sram)

    Section 3: 1-10 Controller Board Audio and Signaling Circuits 1.15 Static Random Access Memory (SRAM) The SRAM (U0121) contains temporary radio calculations or parameters that can change very frequently, and which are generated and stored by the software during its normal operation. The information is lost when the radio is turned off.

  • Page 69: Transmit Audio Circuits

    Controller Board Audio and Signaling Circuits Section 3: 1-11 Transmit Audio Circuits Refer to Figure 3-3 for reference for the following sections. J0551 J0451 FLAT 31 IN/OUT TX RTN OPTION BOARD EXPANSION BOARD J0401 TX SND TX RTN TP0221 CONTROL HEAD FILTERS AND CONNECTOR PREEMPHASIS...
  • Page 70 Section 3: 1-12 Controller Board Audio and Signaling Circuits C0254 serves as a DC blocking capacitor. Multi switch U0251 controlled by ASFIC CMP port GCB4 selects either the external microphone input signal or the voice storage playback signal for entering the ASFIC CMP at pin 48.

  • Page 71: Transmit Signaling Circuits

    Controller Board Audio and Signaling Circuits Section 3: 1-13 2.2.3 TX Secure Audio (Optional) The audio follows the normal transmit audio processing until it emerges from the ASFIC CMP TX SND pin (U0221-44), which is fed to the Secure board residing at option connector J0551-33. The Secure board contains circuitry to amplify, encrypt, and filter the audio.
  • Page 72 Section 3: 1-14 Controller Board Audio and Signaling Circuits 2.3.1 Sub-audible Data (PL/DPL) Sub-audible data implies signaling whose bandwidth is below 300 Hz. PL and DPL waveforms are used for conventional operation and connect tones for trunked voice channel operation. The trunking connect tone is simply a PL tone at a higher deviation level than PL in a conventional system.

  • Page 73: Receive Audio Circuits

    Controller Board Audio and Signaling Circuits Section 3: 1-15 Receive Audio Circuits Refer to Figure 3-5 for reference for the following sections. ACCESSORY CONNECTOR FLT/FLAT RX AUDIO J0501 AUDIO SPKR + EXTERNAL SPKR - U0271 SPEAKER SPKR+ SPKR- CONTROLHEAD CONNECTOR INTERNAL SPEAKER J0401...
  • Page 74 Section 3: 1-16 Controller Board Audio and Signaling Circuits SQ DET is used to determine all audio mute / unmute decisions except for Conventional Scan. In this case CH ACT is a pre-indicator as it occurs slightly faster than SQ DET. 2.4.2 Audio Processing and Digital Volume Control The receiver audio signal enters the controller section from the IF IC on DISC AUDIO.
  • Page 75 Controller Board Audio and Signaling Circuits Section 3: 1-17 If the voltage is between 3.3 and 6.4 V, the device will be active but has its input (U0273-1/9) off. This is a mute condition which is used to prevent an audio pop when the PA is enabled. The SPK+ and SPK- outputs of the audio PA have a DC bias which varies proportionately with FLT A+ (U0271-7).

  • Page 76: Receive Signaling Circuits

    Section 3: 1-18 Controller Board Audio and Signaling Circuits Receive Signaling Circuits Refer to Figure 3-6 for reference for the following sections. DATA FILTER HSIO LIMITER AND DEEMPHASIS MICRO CONTROLLER DISC DET AUDIO ASFIC_CMP U0101 DISCRIMINATOR AUDIO U0221 FROM RF SECTION LSIO (IF IC) FILTER...

  • Page 77: Voice Storage (Optional)

    Controller Board Audio and Signaling Circuits Section 3: 1-19 The output of the generator is summed into the audio chain just after the RX audio de-emphasis block. Inside U0221 the tone is amplified and filtered, then passed through the 8-bit digital volume attenuator, which is typically loaded with a special value for alert tone audio.
  • Page 78 Section 3: 1-20 Controller Board Audio and Signaling Circuits Notes Section : 6881091C63-F...

  • Page 79: Troubleshooting Charts

    Section 3: 2-1 Chapter 2 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Controller Controller Check Press PTT. No RF Output Before replacing Power. Power Up Not able to MCU, check SPI Alert Tone program AUDIO Audio clock, SPI data, J0501 RF Board ICs at Audio PA and RF IC select Audio at Pin...
  • Page 80 Section 3: 2-2 Troubleshooting Flow Chart for Controller Notes 6881091C63-F...

  • Page 81: Allocation Of Schematics And Circuit Boards

    Section 3: 3-1 Chapter 3 CONTROLLER SCHEMATICS AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits This chapter shows the schematics and the parts lists for the controller circuits. Voice Storage Facility The Voice Storage facility is an orderable option on all CDM and PRO models except the PassPort model (CDM1550•LS+), on which Voice Storage is a standard feature.
  • Page 82 Section 3: 3-2 Allocation of Schematics and Circuit Boards Table 3-3 Controller T6/T7/T9 Diagrams and Parts Lists Controller T6/T7/T9 used on PCB: T6/7 on 8486206B06 LB1, 40–60 W T6/7 on 8486207B05 LB2, 40–60 W T6/7 on 8486140B12 VHF, 25–45 W T6/7 on 8480643Z06 UHF B1, 25–40 W T6/7 on 8480645Z04 UHF B2, 25–40 W T7 on 8486172B07 VHF, 1–25 W...
  • Page 83 Allocation of Schematics and Circuit Boards Section 3: 3-3 Table 3-5 Controller T12 Diagrams and Parts Lists Controller T12 used on PCB: 8486140B15 VHF, 25–45 W LDMOS 8471234L02 VHF, 25–45 W LDMOS 8486127Z01 UHF B1, 25–40 W LDMOS 8471223L02 UHF B1, 25–45 W LDMOS 8486250Z02 UHF B2, 25–40 W LDMOS Parts List 3: 3-44...
  • Page 84 Section 3: 3-4 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...

  • Page 85: Controller T2 Schematics And Parts Lists

    Controller T2 Schematics and Parts Lists Section 3: 3-5 Controller T2 Schematics and Parts Lists OPT_PTT OPT_PTT BUS+ BUS+ RESET RESET CNTRL_AUDIO(0:7) CNTRL_AUDIO(0:7) GPIO(0:13) GPIO(0:13) SPI(0:10) SPI(0:10) IN_5V_RF_REG VS_MIC FLT_A+ PASUPVLTG INT_SWB+ CONTROLLER AUDIO EXT_SWB+ EXP_BD_REQ BOOT_CNTRL 5V_RF SCI_TX EMERGENCY_CONTROL SUPPLY_VOLTAGE RESET IGNITION_CONTROL...
  • Page 86 Section 3: 3-6 Controller T2 Schematics and Parts Lists J0601-1 PASUPVLTG J0601-2 J0601-3 VR0601 C0601 U0611 470pF LM2941 VOUT EXT_SWB+ ON_OFF C0603 R0611 C0611 C0612 GND1 GND2 22uF 10uF 0.1uF R0612 4.7K E0631 57R01 FLT_A+ D0621 R0621 5VDC VSTBY C0621 C0622 470pF 47uF...
  • Page 87 Controller T2 Schematics and Parts Lists Section 3: 3-7 R0201 C0211 R0211 0.1uF 7.5K R0202 R0204 4.6VDC C0201 C0212 R0212 10uF TP0221 10uF U0211-4 7.5K 80mV RMS MC3403 MC3403 R0205 C0204 INT_MIC R0207 0.1uF C0203 VS_MIC 2.2K 2200pF 80mV RMS R0206 R0208 EXT_MIC...
  • Page 88 Section 3: 3-8 Controller T2 Schematics and Parts Lists J0451 J0401 CONTROL HEAD EXPANSION BOARD 18-PIN CONNECTOR 12-PIN CONNECTOR R0401 UART_RX J0451-1 UART_RX SCI_TX UART_TX J0401-1 SCI_TX J0451-2 UART_TX SPEAKER+ J0401-2 SPKR+ J0451-3 SPEAKER- J0401-3 SPKR- J0451-4 GROUND GROUND OPT_PTT J0401-4 J0451-5 OPT_PTT...
  • Page 89 Controller T2 Schematics and Parts Lists Section 3: 3-9 5VDC (0VDC during boot mode) R0101 R0102 TP0151 R0151 4.7K D0151 BUS+ BOOT_CNTRL VSTBY D0101 Q0151 VR0151 R0115 R0152 R0116 5.6V GPIO(0:13) FLT_A+ FLT_A+ ON_OFF_CONTROL R0172 R0171 SCI_TX C0151 .01uF 4.7K TP0101 TP0102 GP1_IN...
  • Page 90 Section 3: 3-10 Controller T2 Schematics and Parts Lists Controller T2 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C0271 2113741F49 .01uF C0491 2113743L09 470pF C0652 2311049A97 33uF Part No.
  • Page 91 0662057A82 R0671 0662057A84 R0175 0662057A73 R0275 0662057A73 R0672 0662057A73 R0176 0662057A84 R0276 0662057A77 R0681 0662057A79 * Motorola Depot Servicing only R0177 0662057A65 4.7K R0401 0662057A33 R0682 0662057A93 Reference designators with an asterisk indicate R0178 0662057A89 R0407 0662057M26 U0101 5102226J56 MC68HC11FL0 100 PIN...

  • Page 92: Controller T5 Schematics And Parts Lists

    Section 3: 3-12 Controller T5 Schematics and Parts Lists Controller T5 Schematics and Parts Lists OPT_PTT OPT_PTT BUS+ BUS+ RESET RESET CNTRL_AUDIO(0:7) CNTRL_AUDIO(0:7) GPIO(0:13) GPIO(0:13) SPI(0:10) SPI(0:10) IN_5V_RF_REG VS_MIC FLT_A+ CONTROLLER PASUPVLTG P1 0102726B33 INT_SWB+ P2 0102726B67 EXT_SWB+ EXP_BD_REQ P3 0102726B71 P4 0102726B87 BOOT_CNTRL P5 0102726B95 MPT...
  • Page 93 Controller T5 Schematics and Parts Lists Section 3: 3-13 J0601-1 PASUPVLTG J0601-2 J0601-3 VR0601 C0601 U0611 470pF LM2941 VOUT EXT_SWB+ ON_OFF C0603 C0612 R0611 C0611 10uF 0.1uF 22uF GND1 GND2 R0612 4.7K E0631 57R01 FLT_A+ D0621 R0621 5VDC VSTBY VR0621 C0621 C0622 5.6V...
  • Page 94 Section 3: 3-14 Controller T5 Schematics and Parts Lists U0211-4 R0201 MC3403 R0211 C0211 R0203 7.5K 0.1uF R0202 R0204 C0201 C0202 10uF 10uF R0212 C0212 TP0221 7.5K 10uF 80mV RMS R0205 C0204 INT_MIC 0.1uF C0203 R0207 80mV RMS VS_MIC 2.2K 2200pF R0206 EXT_MIC...
  • Page 95 Controller T5 Schematics and Parts Lists Section 3: 3-15 J0451 R0441 C0449 C0448 C0447 C0446 C0445 C0443 C0442 C0441 C0427 C0421 C0423 EXPANSION BOARD 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF 82pF 470pF 470pF 18-PIN CONNECTOR J0401 CONTROL HEAD C0426 C0422 R0401...
  • Page 96 Section 3: 3-16 Controller T5 Schematics and Parts Lists R0101 R0102 4.7K BUS+ 5VDC (0VDC during boot mode) TP0151 R0151 D0101 D0151 FLT_A+ FLT_A+ R0116 R0115 BOOT_CNTRL VSTBY Q0151 VR0151 SCI_TX R0152 5.6V ON_OFF_CONTROL C0151 .01uF TP0101 TP0102 GPIO(0:13) R0172 10K R0171 CNTLR_AUDIO(0:7) CNTLR_AUDIO(0:7)
  • Page 97 Controller T5 Schematics and Parts Lists Section 3: 3-17 U0351 LP2951ACMM-3.3 INPUT OUTPUT FEEDBACK ERROR C0342 SHUTDOWN SENSE C0351 C0353 C0354 C0352 0.1uF VTAP 0.1uF 0.1uF .022uF 33uF C0324 0.1uF R0323 C0325 D0301 RX_AUD_RTN U0341-1 0.1uF LM2904 R0324 U0331-2 C0331 PWR_GND 0.1uF C0301...
  • Page 98 Section 3: 3-18 Controller T5 Schematics and Parts Lists Controller T5 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C0302 2113743E20 100nF 16V C0478 2113743L09 470 pF 10%...
  • Page 99 Voice storage only R0182 0662057A89 47k 1/16W 5% R0671 0662057A84 30k 1/16W 5% R0342 0662057A55 1800 1/16W 5% * Motorola Depot Servicing only R0183 0662057A65 4700 1/16W 5% R0672 0662057A73 10k 1/16W 5% Voice storage only R0184 0662057A89 47k 1/16W 5%...

  • Page 100: Controller T6/T7/T9 Schematics And Parts Lists

    Section 3: 3-20 Controller T6/T7/T9 Schematics and Parts Lists Controller T6/T7/T9 Schematics and Parts Lists OPT_PTT OPT_PTT BUS+ BUS+ RESET RESET CNTRL_AUDIO(0:7) CNTRL_AUDIO(0:7) GPIO(0:13) GPIO(0:13) SPI(0:10) SPI(0:10) P1 0102726B32 T2 0102727B24 MPT P2 0102726B66 T2 0102727B25 SELV/MDC P3 0102726B70 T3 0102727B40 MPT P4 0102726B86 T3 0102727B41 SELV/MDC P5 0102726B94...
  • Page 101 Controller T6/T7/T9 Schematics and Parts Lists Section 3: 3-21 J0601-1 PASUPVLTG J0601-2 J0601-3 VR0601 C0601 U0611 470pF LM2941 VOUT EXT_SWB+ ON_OFF C0603 R0611 10uF GND1 C0611 C0612 22uF 0.1uF R0612 4.7K E0631 57R01 FLT_A+ D0621 R0621 5VDC VSTBY VR0621 C0621 C0622 5.6V 470pF...
  • Page 102 Section 3: 3-22 Controller T6/T7/T9 Schematics and Parts Lists C0256 R0211 C0211 R0201 R0203 0.1uF 7.5K R0202 R0204 100pF R0256 5V_RF 100K C0201 C0202 R0212 C0212 10uF 10uF 7.5K 10uF TP0221 R0254 80mV RMS R0205 C0204 INT_MIC FLAT_TX_RTN C0203 R0207 0.1uF U0211-4 VS_MIC...
  • Page 103 Controller T6/T7/T9 Schematics and Parts Lists Section 3: 3-23 C0459 C0458 C0457 C0456 C0455 C0453 C0452 C0451 C0449 C0448 C0447 C0446 C0445 C0443 C0442 C0441 J0451 C0407 C0406 C0403 C0402 C0421 R0441 C0401 C0427 C0426 C0423 C0422 J0401 EXPANSION BOARD 470pF 470pF 470pF...
  • Page 104 Section 3: 3-24 Controller T6/T7/T9 Schematics and Parts Lists R0441 J0451 C0421 EXPANSION BOARD C0443 C0449 C0448 C0447 C0446 C0445 C0442 C0441 82pF 18-PIN CONNECTOR 470pF J0401 470pF 470pF 470pF 470pF 470pF 470pF 470pF R0442 1K CONTROL HEAD C0427 C0426 C0423 C0422 DIG_IN_6 WITH WAKEUP...
  • Page 105 Controller T6/T7/T9 Schematics and Parts Lists Section 3: 3-25 R0441 J0451 C0421 EXPANSION BOARD C0443 C0449 C0448 C0447 C0446 C0445 C0442 C0441 82pF 18-PIN CONNECTOR 470pF J0401 470pF 470pF 470pF 470pF 470pF 470pF 470pF R0442 1K CONTROL HEAD C0427 C0423 C0422 DIG_IN_6 WITH WAKEUP J0451-1...
  • Page 106 Section 3: 3-26 Controller T6/T7/T9 Schematics and Parts Lists R0101 R0102 4.7K BUS+ TP0151 R0151 D0151 FLT_A+ FLT_A+ R0116 R0115 D0101 BOOT_CNTRL VSTBY Q0151 SCI_TX R0152 VR0151 ON_OFF_CONTROL TP0101 TP0102 C0151 GPIO(0:13) .01uF R0172 R0171 4.7K CNTLR_AUDIO(0:7) CNTLR_AUDIO(0:7) GP1_IN CNTLR_AUDIO(0:7) GP1_IN_ACC3 Q0171 R0173...
  • Page 107 Controller T6/T7/T9 Schematics and Parts Lists Section 3: 3-27 R0101 R0102 4.7K BUS+ 5VDC (0VDC during boot mode) TP0151 R0151 D0101 D0151 FLT_A+ FLT_A+ R0116 R0115 BOOT_CNTRL VSTBY Q0151 VR0151 SCI_TX 5.6V R0152 ON_OFF_CONTROL C0151 TP0101 TP0102 .01uF GPIO(0:13) R0172 R0171 4.7K CNTLR_AUDIO(0:7)
  • Page 108 Section 3: 3-28 Controller T6/T7/T9 Schematics and Parts Lists U0351 LP2951ACMM-3.3 OUTPUT INPUT ERROR FEEDBACK SHUTDOWN SENSE C0351 VTAP 0.1uF C0352 C0353 C0354 0.1uF .022uF 33uF C0342 0.1uF C0324 U0331-2 0.1uF R0323 C0325 D0301 RX_AUD_RTN C0331 U0341-1 PWR_GND 0.1uF 0.1uF R0324 LM2904 C0301...
  • Page 109 Controller T6/T7/T9 Schematics and Parts Lists Section 3: 3-29 Controller T6/7 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C0293 2311049C01 10uF (only Low Band) C0477 2113743L09 470 pF 10%...
  • Page 110 1k 1/16W 5% R0202 0662057A43 560 1/16W 5% Voice storage only R0662 0662057B02 150k 1/16W R0203 0662057A25 100 1/16W 5% * Motorola Depot Servicing only R0343 0662057B47 0 1/16W R0671 0662057A84 30k 1/16W 5% R0204 0662057A43 560 1/16W 5% Voice storage only...
  • Page 111 Controller T6/T7/T9 Schematics and Parts Lists Section 3: 3-31 Controller T9 Parts List (8471224L01) Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola C0302 2113945C31 CAP 0.1 UF C0494 2113945A05 CAP 470 PF...
  • Page 112 4816169H01 CRYSTAL 38.4KHZ R0115 0613952J01 RES 10K Ohm R0262 0613952J35 RES 270K Ohm R0592 0613952H25 RES 10 Ohm * Motorola Depot Servicing only R0117 0613952H87 RES 3900 Ohm R0265 0613952J10 RES 24K Ohm R0593 0613952J25 RES 100K Ohm R0121 0613952J25...
  • Page 113 Controller T11 Schematics and Parts Lists Section 3: 3-33 Controller T11 Schematics and Parts Lists J0601-1 PASUPVLTG J0601-2 J0601-3 VR0601 C0601 U0611 470pF LM2941 VOUT EXT_SWB+ C0611 C0612 ON_OFF C0603 R0611 10uF 22uF 0.1uF R0612 4.7K E0631 57R01 FLT_A+ D0621 R0621 VSTBY VR0621...
  • Page 114 Section 3: 3-34 Controller T11 Schematics and Parts Lists R0201 R0203 C0211 R0211 0.1uF C0256 R0204 7.5K R0202 100pF R0256 C0202 C0201 5V_RF 10uF C0212 10uF R0212 100K 10uF TP0221 7.5K FLAT_TX_RTN R0254 C0204 R0205 INT_MIC C0203 0.1uF R0207 Check PIN Values on IC U0211-4 2.2K 2200pF...
  • Page 115 Controller T11 Schematics and Parts Lists Section 3: 3-35 RSSI RSSI J0451 R0441 CH_ACT CH_ACT EXPANSION BOARD J0401 C0449 C0448 C0447 C0446 C0445 C0443 C0442 C0441 R0442 CONTROL HEAD 18-PIN CONNECTOR 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF C0427 C0426 C0423 C0422...
  • Page 116 Section 3: 3-36 Controller T11 Schematics and Parts Lists R0101 R0102 4.7K BUS+ TP0151 R0151 D0151 FLT_A+ FLT_A+ R0116 R0115 D0101 BOOT_CNTRL R0152 VSTBY Q0151 SCI_TX VR0151 ON_OFF_CONTROL C0151 TP0101 TP0102 GPIO(0:13) .01uF R0172 R0171 CNTLR_AUDIO(0:7) CNTLR_AUDIO(0:7) CNTLR_AUDIO(0:7) CNTLR_AUDIO(0:7) GP1_IN 4.7K Q0171 GP1_IN_ACC3...
  • Page 117 Controller T11 Schematics and Parts Lists Section 3: 3-37 Controller T11 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C0275 2311049A99 CAP, 47uF C0496 2113743L09 CAP, 470pF D0179...
  • Page 118 Section 3: 3-38 Controller T11 Schematics and Parts Lists * Motorola Depot Servicing only Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Reference designators with an asterisk indicate Part No. Part No. Part No. components which are not field-replaceable...
  • Page 119 Controller T12 Schematics and Parts Lists Section 3: 3-39 Controller T12 Schematics and Parts Lists OPT_PTT OPT_PTT BUS+ BUS+ RESET RESET CNTRL_AUDIO(0:7) CNTRL_AUDIO(0:7) GPIO(0:13) GPIO(0:13) SPI(0:10) SPI(0:10) P1 0102726B32 T2 0102727B24 MPT P2 0102726B66 T2 0102727B25 SELV/MDC P3 0102726B70 T3 0102727B40 MPT P4 0102726B86 T3 0102727B41 SELV/MDC P5 0102726B94...
  • Page 120 Section 3: 3-40 Controller T12 Schematics and Parts Lists J0601-1 PASUPVLTG J0601-2 J0601-3 VR0601 C0601 U0611 470pF LM2941 VOUT EXT_SWB+ ON_OFF C0603 R0611 10uF GND1 C0611 C0612 22uF 0.1uF R0612 4.7K E0631 57R01 FLT_A+ D0621 R0621 5VDC VSTBY C0621 VR0621 C0622 5.6V 470pF...
  • Page 121 Controller T12 Schematics and Parts Lists Section 3: 3-41 C0256 R0211 C0211 R0201 R0203 0.1uF 7.5K 100pF R0202 R0204 R0256 C0201 C0202 100K 10uF 10uF 5V_RF R0212 C0212 TP0221 7.5K 10uF 80mV RMS R0254 R0205 C0204 INT_MIC FLAT_TX_RTN 0.1uF C0203 R0207 VS_MIC 2200pF...
  • Page 122 Section 3: 3-42 Controller T12 Schematics and Parts Lists J0451 R0441 C0449 EXPANSION BOARD 470pF J0401 C0421 C0448 C0446 C0445 C0443 C0442 C0441 C0447 18-PIN CONNECTOR R0442 CONTROL HEAD 82pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF C0427 C0426 C0423 C0422 R0401 12-PIN CONNECTOR...
  • Page 123 Controller T12 Schematics and Parts Lists Section 3: 3-43 R0102 R0101 4.7K BUS+ TP0151 R0151 D0101 D0151 FLT_A+ FLT_A+ R0116 R0115 BOOT_CNTRL VSTBY VR0151 Q0151 SCI_TX 5.6V R0152 ON_OFF_CONTROL GPIO(0:13) R0172 TP0101 TP0102 C0151 .01uF R0171 CNTLR_AUDIO(0:7) CNTLR_AUDIO(0:7) CNTLR_AUDIO(0:7) Q0171 CNTLR_AUDIO(0:7) 4.7K GP1_IN...
  • Page 124 Section 3: 3-44 Controller T12 Schematics and Parts Lists Controller T12 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C0277 2113945L25 1000pF C0508 2113945L17 470pF J0451 0916162H01 “FLEX CONNECTOR, SIDE”””...
  • Page 125 Controller T12 Schematics and Parts Lists Section 3: 3-45 Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. R0183 0613952H89 4700 R0481 0613952G67 U0641 5164015H94 IC VOLTAGE RGTR R0184 0613952J17 R0482 0613952G67 U0651 5114014A07...
  • Page 126 Section 3: 3-46 Controller T12 Schematics and Parts Lists (8471224L04) Controller T12 Schematics and Parts Lists (8471224L04) REFERENCE NUMBER FROM 0001 to 0999 (please use 4 digits) REV T7 05.09.15 17. Februar 2000 Attention: There are two versions of controllers available, one for LDMOS PA CHASSIS and one for BIPOLAR PA CHASSIS OPT_PTT OPT_PTT...
  • Page 127 Controller T12 Schematics and Parts Lists (8471224L04) Section 3: 3-47 J0601-1 PAS UPVLT G J0601-2 J0601-3 VR0601 C0601 U0611 470pF LM2941 VOU T EXT_SWB+ 2 ON_OFF ADJ 1 C0603 R0611 GND2 10uF GND1 C0611 C0612 22uF 0.1uF R0612 4.7K E0631 57R01 FLT_A+ D0621...
  • Page 128 Section 3: 3-48 Controller T12 Schematics and Parts Lists (8471224L04) R0201 R0203 R0211 C0211 C0256 0.1uF 7.5K 100pF R0202 R0204 5V_RF C0201 C0202 R0256 10uF C0212 10uF R0212 100K TP0221 10uF 7.5K R0254 INT_MIC FLAT_TX_RTN R0205 C0204 U0211-4 C0203 R0207 0.1uF VS_MIC MC3403...
  • Page 129 Controller T12 Schematics and Parts Lists (8471224L04) Section 3: 3-49 R0441 J0451 C0421 EXPANSION BOARD C0443 C0449 C0448 C0447 C0446 C0445 C0442 C0441 82pF 18-PIN CONNECTOR J0401 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF R0442 1K CONTROL HEAD C0427 C0423 C0422 DIG_IN_6 WITH WAKEUP...
  • Page 130 Section 3: 3-50 Controller T12 Schematics and Parts Lists (8471224L04) R0101 R0102 4.7K BUS+ 5VDC (0VDC during boot mode) TP0151 R0151 D0101 D0151 FLT_A+ FLT_A+ R0116 R0115 BOOT_CNTRL VSTBY Q0151 VR0151 SCI_TX R0152 5.6V ON_OFF_CONTROL C0151 TP0101 TP0102 .01uF GPIO(0:13) R0172 R0171 4.7K...
  • Page 131 Controller T12 Schematics and Parts Lists (8471224L04) Section 3: 3-51 U0351 LP2951ACMM-3.3 OUTPUT 1 INPUT ERROR 5 FEEDBACK SHUTDOWN SENSE C0351 VTAP 0.1uF C0352 C0354 C0353 0.1uF .022uF 33uF C0342 0.1uF C0324 U0331-2 0.1uF R0323 C0325 D0301 RX_AUD_RTN U0341-1 C0331 PWR_GND 0.1uF NU 0.1uF...
  • Page 132 Section 3: 3-52 Controller T12 Schematics and Parts Lists (8471224L04) (8471224L04) Controller T12 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C0226 2113945C31 CAP,FXD,.1UF,+10%,-10%,50V- C0265 2113945C31 CAP,FXD,.1UF,+10%,-10%,50V- C0470...
  • Page 133 Controller T12 Schematics and Parts Lists (8471224L04) Section 3: 3-53 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C0510 2113945L17 CAP,FXD,470PF,+5%,-5%,50V- C0622 2313960F30 CAP,FXD,47UF,+10%,- E0272 2415954H02 INDUCTOR BEAD CHIP EPP...
  • Page 134 Section 3: 3-54 Controller T12 Schematics and Parts Lists (8471224L04) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R0177 0613952H89 CER CHIP RES 4700 OHM 5% R0241 0613952J17...
  • Page 135 Controller T12 Schematics and Parts Lists (8471224L04) Section 3: 3-55 Circuit Motorola Description Part No. VR0151 4813977M11 DIODE,ZEN,MBZ5232,SM,SOT- 23,5.6V,10MA,.225W,ZEN,PB- FREE VR0501 4813979C11 DIODE,SUPR,QUAD 20 V ZEN, PB-FREE VR0503 4813979C11 DIODE,SUPR,QUAD 20 V ZEN, PB-FREE VR0504 4813977M36 DIODE,ZEN,MBZ5257,SM,SOT- 23,33V,10MA,.225W,ZEN,PB- FREE VR0505...
  • Page 136 Section 3: 3-56 Controller T6/T7 Schematics and Parts Lists (8471235L06)) Controller T6/T7 Schematics and Parts Lists (8471235L06)) REFERENCE NUMBER FROM 0001 to 0999 (please use 4 digits) REV T7 05.09.15 17. Februar 2000 Attention: There are two versions of controllers available, one for LDMOS PA CHASSIS and one for BIPOLAR PA CHASSIS OPT_PTT OPT_PTT...
  • Page 137 Controller T6/T7 Schematics and Parts Lists (8471235L06)) Section 3: 3-57 J0601-1 PASUPVLTG J0601-2 J0601-3 VR0601 C0601 U0611 470pF LM2941 VOUT EXT_SWB+ 2 ON_OFF ADJ 1 C0603 R0611 GND2 10uF GND1 C0611 C0612 22uF 0.1uF R0612 4.7K E0631 57R01 FLT_A+ D0621 R0621 5VDC VSTBY...
  • Page 138 Section 3: 3-58 Controller T6/T7 Schematics and Parts Lists (8471235L06)) R0201 R0203 C0211 R0211 C0256 0.1uF 7.5K 100pF R0202 R0204 5V_RF C0201 C0202 R0256 C0212 10uF 10uF 100K R0212 10uF TP0221 7.5K R0254 INT_MIC FLAT_TX_RTN R0205 C0204 U0211-4 C0203 R0207 0.1uF VS_MIC MC3403...
  • Page 139 Controller T6/T7 Schematics and Parts Lists (8471235L06)) Section 3: 3-59 R0441 J0451 C0421 EXPANSION BOARD C0443 C0449 C0448 C0447 C0446 C0445 C0442 C0441 82pF 18-PIN CONNECTOR 470pF 470pF 470pF 470pF 470pF 470pF 470pF 470pF J0401 R0442 1K CONTROL HEAD C0426 C0427 C0423 C0422...
  • Page 140 Section 3: 3-60 Controller T6/T7 Schematics and Parts Lists (8471235L06)) R0101 R0102 4.7K BUS+ 5VDC (0VDC during boot mode) TP0151 R0151 D0101 D0151 FLT_A+ FLT_A+ R0116 R0115 BOOT_CNTRL VSTBY Q0151 VR0151 SCI_TX R0152 5.6V ON_OFF_CONTROL C0151 TP0101 TP0102 .01uF GPIO(0:13) R0172 R0171 4.7K...
  • Page 141 Controller T6/T7 Schematics and Parts Lists (8471235L06)) Section 3: 3-61 U0351 LP2951ACMM-3.3 OUTPUT 1 INPUT ERROR 5 FEEDBACK SHUTDOWN SENSE C0351 VTAP 0.1uF C0352 C0354 C0353 0.1uF .022uF 33uF C0342 0.1uF C0324 U0331-2 0.1uF R0323 C0325 D0301 RX_AUD_RTN U0341-1 C0331 PWR_GND 0.1uF NU 0.1uF...
  • Page 142 Section 3: 3-62 Controller T6/T7 Schematics and Parts Lists (8471235L06)) (8471235L06) Controller T6/T7 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola Description C0226 2113945C31 CAP,FXD,.1UF,+10%,-10%,50V- C0261 2113945C31 CAP,FXD,.1UF,+10%,-10%,50V- C0446...
  • Page 143 Controller T6/T7 Schematics and Parts Lists (8471235L06)) Section 3: 3-63 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C0508 2113945L17 CAP,FXD,470PF,+5%,-5%,50V- C0611 2314030J28 CAP,FXD,22UF,+10%,- D0660 4813978C02 PB FREE, NOT COMPLETELY...
  • Page 144 Section 3: 3-64 Controller T6/T7 Schematics and Parts Lists (8471235L06)) Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R0175 0613952J01 CER CHIP RES 10K OHM 5% R0229 0613952H25 CER CHIP RES 10.0 OHM 5%...
  • Page 145 Controller T6/T7 Schematics and Parts Lists (8471235L06)) Section 3: 3-65 Circuit Motorola Description Part No. U0652 5114004A02 IC,SENSING CIR- CUIT,MC33064,SM,SO-8,1PER PKG,VTH 4.6 V, PB-FREE VR0151 4813977M11 DIODE,ZEN,MBZ5232,SM,SOT- 23,5.6V,10MA,.225W,ZEN,PB- FREE VR0501 4813979C11 DIODE,SUPR,QUAD 20 V ZEN, PB-FREE VR0503 4813979C11 DIODE,SUPR,QUAD 20 V ZEN,...
  • Page 146 Section 3: 3-66 Controller T6/T7 Schematics and Parts Lists (8471235L06)) Notes 6881091C63-F...
  • Page 147 Service Information Table of Contents Chapter 1 Model Charts and Technical Specifications 1.0 VHF (136–174 MHz) 1–25W Model Charts ............4:1-1 1.1 CDM Series Model Chart ................4:1-1 1.2 PRO Series Model Chart................4:1-2 2.0 Technical Specifications ...................4:1-2 Chapter 2 Theory of Operation 1.0 Introduction .......................4:2-1...
  • Page 148 Section 4: ii Chapter 4 VHF (136–174 MHz) 1–25 W PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ........... 4:4-1 1.1 Controller Circuits ..................4:4-1 2.0 VHF (136–174 MHz) 1–25 W LDMOS PCB 8471235L04, Schematics, and Parts Lists ......................

  • Page 149: Vhf (136-174 Mhz) 1-25W Model Charts

    Section 4: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS VHF (136–174 MHz) 1–25W Model Charts CDM Series Model Chart CDM Series, VHF (136–174 MHz) 1–25W Model Description AAM25KHC9AA1AN CDM750, 136–174 MHz, 1–25W, 12.5/20/25 kHz AAM25KHD9AA2AN CDM1250, 136–174 MHz, 1–25W, 12.5/20/25 kHz AAM25KHF9AA5AN CDM1550, 136–174 MHz, 1–25W, 12.5/20/25 kHz...

  • Page 150: Pro Series Model Chart

    Section 4: 1-2 Technical Specifications PRO Series Model Chart PRO Series, VHF (136–174 MHz) 1–25W Model Description LAM25KHC9AA1AN PRO3100, 136–174 MHz, 1–25W, 12.5/20/25 kHz Ch Sp LAM25KHD9AA2AN PRO5100, 136–174 MHz, 1–25W, 12.5/20/25 kHz Ch Sp LAM25KHF9AA5AN PRO7100, 136–174 MHz, 1–25W, 12.5/20/25 kHz Ch Sp Item Description GCN6112...

  • Page 151: Technical Specifications

    Technical Specifications Section 4: 1-3 Transmitter *Frequencies – Full Bandsplit VHF 136–174 MHz Channel Spacing 12.5/20/25 kHz Frequency Stability ±2.0 ppm (-30°C to +60°C, +25° Ref.) Power 1–25W Modulation Limiting ±2.5 @ 12.5 kHz ±4.0 @ 20 kHz ±5.0 @ 25 kHz FM Hum &...
  • Page 152 Section 4: 1-4 Technical Specifications Notes 6881091C63-F...

  • Page 153: Chapter 2 Theory Of Operation

    Section 4: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the VHF circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of this manual.

  • Page 154: Front-End Bandpass Filters And Pre-Amplifier

    Section 4: 2-2 VHF (136–174 MHz) 1–25W Receiver Front-End There are two 2-pole 44.85 MHz crystal filters in the high-IF section and 2 pairs of 455 kHz ceramic filters in the low-IF section to provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25kHz channel spacing is selected via control line BWSELECT.
  • Page 155 VHF (136–174 MHz) 1–25W Transmitter Power Amplifier (PA) 25W Section 4: 2-3 for 20/25 kHz channel spacing or FL3111, FL3113/F3115 for 12.5 kHz channel spacing. These pairs are selectable via BWSELECT. The filtered output from the ceramic filters is applied to the limiter input pin of the IF IC (pin 14).

  • Page 156: Vhf (136-174 Mhz) 1-25W Transmitter Power Amplifier

    Section 4: 2-4 VHF (136–174 MHz) 1–25W Transmitter Power Amplifier Op-amp U3402-1 monitors the drain current of U3401 via resistor R3444 and adjusts the bias voltage of U3401 so that the current remains constant. The PCIC (U3501) provides a DC output voltage at pin 4 (INT) which sets the reference voltage of the current control loop.

  • Page 157: Antenna Switch

    VHF (136–174 MHz) 1–25W Frequency Synthesis Section 4: 2-5 Antenna Switch The antenna switch consists of two PIN diodes, D3471 and D3472. In the receive mode, both diodes are off. Signals applied at the antenna jack J3401 are routed, via the harmonic filter, through network L3472, C3474 and C3475, to the receiver input.

  • Page 158: Reference Oscillator

    Section 4: 2-6 VHF (136–174 MHz) 1–25W Frequency Synthesis Reference Oscillator The reference oscillator (Y3263) contains a temperature compensated crystal oscillator with a frequency of 16.8 MHz. An analog-to-digital (A/D) converter internal to U3201 (LVFRAC-N) and controlled by the µP via serial interface (SRL) sets the voltage at the warp output of U3201 (pin 25) to set the frequency of the oscillator.

  • Page 159: Voltage Controlled Oscillator (Vco)

    VHF (136–174 MHz) 1–25W Frequency Synthesis Section 4: 2-7 circuitry (D3201, C3202, C3203). This voltage multiplier is basically a diode capacitor network driven by two (1.05MHz) 180 degrees out of phase signals (U3201-14 and -15). Output LOCK (U3201-4) provides information about the lock status of the synthesizer loop. A high level at this output indicates a stable loop.

  • Page 160: Synthesizer Operation

    Section 4: 2-8 VHF (136–174 MHz) 1–25W Frequency Synthesis A steering line voltage (VCTRL) between 2.5V and 11V at varactor diode D3361 will tune the full TX frequency range (TXINJ) from 136 MHz to 174 MHz, and at varactor diode D3341 will tune the full RX frequency range (RXINJ) from 181 MHz to 219 MHz.

  • Page 161: Chapter 3 Troubleshooting Charts

    Section 4: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20dB Quieting No Recovered Audio Check Controller Audio at (in the case of no audio) pin 8 of OR ELSE go to “B” U3101? Spray or inject 44.85MHz into XTAL Filter FL3101...
  • Page 162 Section 4: 3-2 Troubleshooting Flow Chart for Receiver Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Inject RF into J3401 Trace IF signal from C3035 to Q3101. IF Signal at Check for bad XTAL IF signal at Q3102 C3035? filter collector? Before replacing...
  • Page 163 Troubleshooting Flow Chart for 25 W Transmitter Section 4: 3-3 Troubleshooting Flow Chart for 25 W Transmitter (Sheet 1 of 3) START No power or low power when keyed Check if Pressure Pad closes S3440 Check Components between Current Q3441 and RF Output, >500mA &...
  • Page 164 Section 4: 3-4 Troubleshooting Flow Chart for 25 W Transmitter Troubleshooting Flow Chart for 25 W Transmitter (Sheet 2 of 3) Check PA Stages No power or low power when keyed DC Voltage If U3201 Pin 2 is high, at U3501 replace PCIC Pin 23 =0? Check Resistive Net-...

  • Page 165: Troubleshooting Flow Chart For 25 W Transmitter

    Troubleshooting Flow Chart for 25 W Transmitter Section 4: 3-5 Troubleshooting Flow Chart for 25 W Transmitter (Sheet 3 of 3 Check Final PA Stage Supply Voltage Bias 2 DC Voltage at Replace Q3441 TP3406? 1-4V Check Components ASFIC RF Voltage between ASFIC and U0221 Pin 6 Check FGU (U3301)

  • Page 166: Troubleshooting Flow Chart For Synthesizer

    Section 4: 3-6 Troubleshooting Flow Chart for Synthesizer Troubleshooting Flow Chart for Synthesizer 5V at Check 5V U3201 pins 5, Start Regulator 20, 34 & 36 U3211, R3211 Visual Correct check of the Problem Board OK? Is 16.8MHz 16.8MHz Replace Signal at signal at U3201...

  • Page 167: Troubleshooting Flow Chart For Vco

    Troubleshooting Flow Chart for VCO Section 4: 3-7 Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP3001 Visual check Visual check Correct of board of board Problem Make sure U3211 is working...
  • Page 168 Section 4: 3-8 Troubleshooting Flow Chart for VCO Notes 6881091C63-F...
  • Page 169 Section 4: 4-1 Chapter 4 VHF (136–174 MHZ) 1–25 W PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The VHF circuits are contained on the printed circuit board (PCB) which also contains the controller circuits. This chapter shows the schematics for the VHF circuits only. Refer to the controller section for details of the related controller circuits.
  • Page 170 Section 4: 4-2 Allocation of Schematics and Circuit Boards Table 4-3 VHF 1–25 W PCB 8486172B06 Diagrams and Parts Lists PCB 8486172B06: Page: Main Board Top Side 4: 4-22 Main Board Bottom Side 4: 4-23 SCHEMATICS Power Amplifier 1 – 25 W 4: 4-24 FRACN Synthesizer 4: 4-25...
  • Page 171 Allocation of Schematics and Circuit Boards Section 4: 4-3 Table 4-6 VHF 1–25 W PCB 8471235L06 Diagrams and Parts Lists PCB 8471235L06 : Page: Main Board Top Side 4: 4-47 Main Board Bottom Side 4: 4-48 SCHEMATICS Power Amplifier 1-25W 4: 4-49 FRACN Synthesizer 4: 4-50...
  • Page 172 Section 4: 4-4 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...

  • Page 173: Vhf (136-174 Mhz) 1-25 W Ldmos Pcb 8471235L04, Schematics, And

    VHF (136–174 MHz) 1–25 W LDMOS PCB 8471235L04, Schematics, and Parts Lists Section 4: 4-5 VHF (136–174 MHz) 1–25 W LDMOS PCB 8471235L04, Schematics, and Parts Lists R3242 J0451 C0251 R0257 R3221 R3224 C3210 L3232 C3226 C0212 R3223 FL3114 C3213 Y3102 C3255 C3227...
  • Page 174 Section 4: 4-6 VHF (136–174 MHz) 1–25 W LDMOS PCB 8471235L04, Schematics, and Parts Lists R3418 L3402 L3436 R3429 R3440 C3438 U3402 E0631 S3440 R3441 C3440 R3445 R3443 R3442 VR0601 C3413 VR0509 VR0504 R3412 C3495 C3414 C3415 R3444 R0531 R0541 C3416 R3411 C0541...
  • Page 175 VHF (136–174 MHz) 1–25 W LDMOS PCB 8471235L04, Schematics, and Parts Lists Section 4: 4-7 PASUPVLTG_VHF_PA_1 PASUPVLTG L3402 C3436 C3437 57R01 10uF .033uF L3436 57R01 C3405 C3406 470pF 470pF L3421 57R01 C3438 C3439 470pF 470pF R3491 C3403 C3423 C3422 L3437 C3402 33pF L3403...
  • Page 176 Section 4: 4-8 VHF (136–174 MHz) 1–25 W LDMOS PCB 8471235L04, Schematics, and Parts Lists VHF (136–174 MHz) 1–25 W LDMOS PCB 8471235L04 IF 6881091C63-F...
  • Page 177 VHF (136–174 MHz) 1–25 W LDMOS PCB 8471235L04, Schematics, and Parts Lists Section 4: 4-9 † – VHF 1 25 W PCB 8471235L04 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No.
  • Page 178 Section 4: 4-10 VHF (136–174 MHz) 1–25 W LDMOS PCB 8471235L04, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. FL3114 9180468V06 SMD455KHZ 4 ELEMENT CER...
  • Page 179 Y3263 4816142H01 REFERENCE OSCILLATOR 8471235L04 WARIS MOBILE VHF 25W PCB * Motorola Depot Servicing only Reference designators with an asterisk indicate components which are not field-replaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these parts have been replaced in the field will be off frequency at temperature extremes.

  • Page 180: Vhf (136-174 Mhz) 1-25 W Pcb 8486172B04, Schematics, And

    Section 4: 4-12 VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists R3242 J0451 C3209 D3221 Q3221 R3221 C0251 C0267 C3210 C3222 C3221 R3224 R3222 R0267 R3223 L3201 L3232 C3226...
  • Page 181 VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists Section 4: 4-13 C3152 D3261 TP3202 C0205 C3146 R3146 R0208 C3263 C 3203 R 3201 TP3201 C3147 R3203 J0401 R3152 C3261 C3202 C3241 R0265 R3155 R3204 R0266 C0265 C3151 R3147 R3261 D3201...
  • Page 182 Section 4: 4-14 VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists L3402 PASUPVLTG_VHF_PA_1 PASUPVLTG 57R01 C3436 C3437 C3405 C3406 L3436 10uF .033uF 470pF 470pF 57R01 L3421 9V3_VHF_PA_1 9V3FLT 57R01 C3421 .033uF U_PREDRIVER U_DRIVER C3439 C3493 C3495 C3438 C3403 470pF 470pF...
  • Page 183 VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists Section 4: 4-15 R3211 VDDA_VHF_FN_1 VDDA C3212 C3214 2.2uF .018uF VDDA U3211 LP2951 5V_VHF_FN_1 5V_VHF_FN_2 IN_5V_RF_REG_VHF_FN_1 4.97VDC (SOURCE) OUTPUT INPUT IN_5V_RF_REG FEEDBACK 7 13.30VDC ERROR C3213 6.83VDC SENSE SHUTDOWN 2.2uF 5V_TAP C3211...
  • Page 184 Section 4: 4-16 VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists Q3303 9.14VDC (R) UMC5N 9V3_VHF_VCO_3 9V3_VHF_VCO_1 9V3_VHF_VCO_2 0VDC (T) 9.12VDC 4.97VDC VDDA_VHF_VCO_1 3.83VDC (R) VDDA 0VDC (T) VSF_VHF_VCO_1 4.54VDC 7.44VDC (R) L3333 R3311 0VDC (T) C3335 .01uF R3331 R3335...
  • Page 185 VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists Section 4: 4-17 Q3021 R3006 FECNTL_2_VHF_FE_1 4.7K C3027 FECNTL_2 0.1uF C3026 C3029 0.1uF 330pF R3010 R3025 IF_VHF_FE_1 9V3_VHF_FE_1 L3031 R3002 R3011 270nH 9V3_VHF_FE_2 4.7K C3010 C3028 C3000 C3035 C3011 C3007 330pF 0.1uF...
  • Page 186 Section 4: 4-18 VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists FL3115 CFWC455F MC74HC4066 FL3113 FL3111 CFUCJ455F CFWC455G 9V3_VHF_IF_1 CNTL CNTL CNTL CNTL R3153 9V3_VHF_IF_2 U3115-1 U3111-1 U3111-4 U3115-4 Q3151 MC74HC4066 MC74HC4066 MC74HC4066 MC74HC4066 R3151 BWSELECT_VHF_IF_1 R3104 BWSELECT R3114 FL3114...
  • Page 187 VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists Section 4: 4-19 † – VHF 1 25 W PCB 8486172B04 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit...
  • Page 188 Section 4: 4-20 VHF (136–174 MHz) 1–25 W PCB 8486172B04, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. D3101 4880154K03 DUAL SCHOTTKY SOT23 L3363...
  • Page 189 4886182B01 VCTCXO 16.8MHz 2ppm TTSO5V * Y3261 Not Used 16.8MHz 75Z04 * Motorola Depot Servicing only Reference designators with an asterisk indicate components which are not field-replaceable because they need to be calibrated with specialized factory equipment after installation. 6881091C63-F...

  • Page 190: Vhf (136-174 Mhz) 1-25 W Pcb 8486172B06, Schematics, And

    Section 4: 4-22 VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists C3240 R3242 R3221 C0251 J0451 C3210 R3224 C0267 C0211 L3201 C3226 R0267 C0212 Y3102 R0252 C3213 R3223 FL3114...
  • Page 191 VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists Section 4: 4-23 C3203 C3241 TP3202 R0208 J0401 R3201 TP3201 R3152 R3203 R0265 C0492 R3204 D3201 C0265 C0254 R3261 D3261 R3147 C0202 C0497 FL3115 R0206 Q3152 R0203 C0491 C3144 U0652 C0266 R3206...
  • Page 192 Section 4: 4-24 VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists L3402 PASUPVLTG_VHF_PA_1 PASUPVLTG 57R01 C3437 C3436 C3405 C3406 L3436 .033uF 10uF 470pF 470pF 57R01 L3421 9V3_VHF_PA_1 9V3FLT 57R01 C3421 .033uF C3493 C3495 U_PREDRIVER U_DRIVER 6.8pF C3438 3.3pF C3439 C3403...
  • Page 193 VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists Section 4: 4-25 VDDA_VHF_FN_1 R3211 VDDA C3214 2.2uF U3211 ADP3300 VDDA 5V_VHF_FN_1 IN_5V_RF_REG_VHF_FN_1 4.97VDC (SOURCE) IN_5V_RF_REG 13.30VDC 5V_VHF_FN_2 C3213 6.83VDC 2.2uF L3201 C3211 11.28VDC C3215 390nH 0.1uF 2.2uF C3202 .01uF R3201 C3203...
  • Page 194 Section 4: 4-26 VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists WARISMOBILE VHF_VCO Q3303 9.14VDC (R) UMC5N 9V3_VHF_VCO_3 9V3_VHF_VCO_1 0VDC (T) 9.21VDC 9V3_VHF_VCO_2 VDDA_VHF_VCO_1 3.83VDC (R) 4.97VDC VDDA 0VDC (T) 4.54VDC L3333 VSF_VHF_VCO_1 7.44VDC (R) R3311 0VDC (T) C3335 .01uF R3335...
  • Page 195 VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists Section 4: 4-27 R3026 Q3021 R3027 FECNTL_2_VHF_FE_1 R3006 FECNTL_2 R3010 C3029 C3026 330pF 0.1uF R3002 9V3_VHF_FE_1 R3025 1.5K 9V3_VHF_FE_2 IF_VHF_FE_1 L3031 C3007 C3000 C3010 C3011 R3011 3300pF 330pF 3300pF 3300pF 4.7K C3028...
  • Page 196 Section 4: 4-28 VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists FL3115 9180469V04 9V3_VHF_IF_1 U3111-1 FL3111 FL3113 9180469V03 9180468v04 9V3_VHF_IF_2 R3104 CNTL CNTL CNTL CNTL R3114 R3153 U3111-4 U3115-1 U3115-4 5V_VHF_IF_1 R3105 R3115 R3151 3.9VDC U3115-3 U3111-2 U3111-3 U3115-2 C3111...
  • Page 197 VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists Section 4: 4-29 † – VHF 1 25 W PCB 8486172B06 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit...
  • Page 198 Section 4: 4-30 VHF (136–174 MHz) 1–25 W PCB 8486172B06, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. D3101 4880154K03 DIODE DUAL SCHOTTKY L3402...
  • Page 199 39k 1/16W 5% R3442 0662057A57 2200 1/16W 5% R3443 0662057A87 39k 1/16W 5% R3444 0662057C19 4.7 1/10W 5% * Motorola Depot Servicing only R3445 0662057A58 2400 1/16W 5% R3446 0662057B47 0 1/16W Reference designators with an asterisk indicate R3450 0662057A41...

  • Page 200: Vhf (136-174 Mhz) 1-25 W Pcb 8486172B07, Schematics, And Parts Lists

    Section 4: 4-32 VHF (136–174 MHz) 1–25 W PCB 8486172B07, Schematics, and Parts Lists VHF (136–174 MHz) 1–25 W PCB 8486172B07, Schematics, and Parts Lists R3242 C3240 C0251 R0257 R3221 J0451 C0256 R3224 C3210 C0211 L3232 C3231 C0212 R0256 R0252 C3213 R3223 Y3102...
  • Page 201 VHF (136–174 MHz) 1–25 W PCB 8486172B07, Schematics, and Parts Lists Section 4: 4-33 C3241 C3203 R3201 TP3201 J0401 C0267 R3203 R3152 R0267 C0492 C0265 R3204 D3201 C0254 R3261 R0266 R3147 C0202 C0497 FL3115 R0203 Q3152 R0206 C0491 U0652 C3144 R3206 R0204 U3201...
  • Page 202 Section 4: 4-34 VHF (136–174 MHz) 1–25 W PCB 8486172B07, Schematics, and Parts Lists VDDA_VHF_FN_1 R3211 VDDA C3214 2.2uF U3211 ADP3300 VDDA 5V_VHF_FN_1 4.97VDC (SOURCE) IN_5V_RF_REG 13.30VDC 5V_VHF_FN_2 IN_5V_RF_REG_VHF_FN_1 C3213 6.83VDC 2.2uF C3212 11.28VDC L3201 C3211 C3215 390nH .022uF C3202 0.1uF 2.2uF .01uF...
  • Page 203 VHF (136–174 MHz) 1–25 W PCB 8486172B07, Schematics, and Parts Lists Section 4: 4-35 FL3115 9180469V04 U3111-1 FL3111 FL3113 9180468v04 9180469V03 1 IN 1 IN CNTL CNTL CNTL CNTL R3153 U3111-4 U3115-1 U3115-4 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 R3114 BWSELECT 9V3_VHF_IF_2 U3115-3 R3104 U3115-2 U3111-2...
  • Page 204 Section 4: 4-36 VHF (136–174 MHz) 1–25 W PCB 8486172B07, Schematics, and Parts Lists † – VHF 1 25 W PCB 8486172B07 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit...
  • Page 205 VHF (136–174 MHz) 1–25 W PCB 8486172B07, Schematics, and Parts Lists Section 4: 4-37 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. D3003 4880154K03 DUAL SCHOTTKY SOT23 L3346...
  • Page 206 16.8MHz 75Z04 R3432 0680194M18 51 1W 5% R3433 0662057C13 2.7 1/10W 5% R3434 0662057C13 2.7 1/10W 5% * Motorola Depot Servicing only R3435 0662057C13 2.7 1/10W 5% R3441 0662057A87 39k 1/16W 5% Reference designators with an asterisk indicate R3442 0662057A57...

  • Page 207: Vhf (136-174 Mhz) 1-25 W Pcb 8486172B08, Schematics, And Parts Lists

    VHF (136–174 MHz) 1–25 W PCB 8486172B08, Schematics, and Parts Lists Section 4: 4-39 VHF (136–174 MHz) 1–25 W PCB 8486172B08, Schematics, and Parts Lists R3242 J0451 C0251 R0257 R3221 R3224 C3210 L3232 C3226 C0212 FL3114 C3213 R3223 Y3102 C3227 C3231 C3255 C3212...
  • Page 208 Section 4: 4-40 VHF (136–174 MHz) 1–25 W PCB 8486172B08, Schematics, and Parts Lists TP3202 C3241 R3201 C3146 C3152 D3261 C3203 C3263 C0267 TP3201 C0255 J0401 R3146 C3147 R3152 R3203 D3201 R0267 C0492 C3151 R3204 C0265 R3147 Q3152 R0468 U0653 R3261 C0254 FL3115...
  • Page 209 VHF (136–174 MHz) 1–25 W PCB 8486172B08, Schematics, and Parts Lists Section 4: 4-41 L3402 PASUPVLTG_VHF_PA_1 PASUPVLTG 57R01 C3437 C3436 C3405 C3406 L3436 .033uF 10uF 470pF 470pF 57R01 L3421 9V3_VHF_PA_1 9V3FLT 57R01 C3421 .033uF C3493 C3495 U_DRIVER U_PREDRIVER C3438 C3439 6.2pF 3.3pF C3403...
  • Page 210 Section 4: 4-42 VHF (136–174 MHz) 1–25 W PCB 8486172B08, Schematics, and Parts Lists FL3115 CFWC455F 9180469V04 U3111-1 CFUCJ455F CFWC455G U3111-4 U3115-1 U3115-4 FL3113 FL3111 9180468v04 9180469V03 CNTL CNTL CNTL CNTL R3153 Q3151 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 BWSELECT 9V3_VHF_IF_2 R3114 R3104 U3111-3 U3115-2 CFUCJ455D...
  • Page 211 VHF (136–174 MHz) 1–25 W PCB 8486172B08, Schematics, and Parts Lists Section 4: 4-43 † – VHF 1 25 W PCB 8486172B08 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit...
  • Page 212 Section 4: 4-44 VHF (136–174 MHz) 1–25 W PCB 8486172B08, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. FL3114 9180468V06 CER FLTR 4EL 455 KHZ SMD...
  • Page 213 VCTCXO 16.8MHz 2ppm TTSO5V * Y3261 Not Used 16.8MHz 75Z04 * Motorola Depot Servicing only Reference designators with an asterisk indicate components which are not field-replaceable because they need to be calibrated with specialized factory equipment after installation. Radios in which these parts have been replaced in the field will be off frequency at temperature extremes.
  • Page 214 Section 4: 4-46 VHF (136–174 MHz) 1–25 W PCB 8486172B08, Schematics, and Parts Lists Notes 6881091C63-F...

  • Page 215: Vhf (136-174 Mhz) 1-25 W Pcb 8471235L06 Schematics, And Parts Lists

    VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Section 4: 4-47 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Q3411 C3443 D3401 Q3422 J0501 L3422 C3441 C3442 C0603 C0484 R3414 L3413 R3416 C3426 R3435 R3415 R0611 C3425...
  • Page 216 Section 4: 4-48 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists R3418 L3402 L3436 R3492 R3429 C3438 R3440 U3402 C3436 E0631 S3440 R3441 C3440 R3445 R3443 R3442 VR0601 VR0509 VR0504 C3413 R3412 C3495 TP0530 C3414 C3415 R3411 R0531 R3444 R0541...
  • Page 217 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Section 4: 4-49 PASUPVLTG_VHF_PA_1 PASUPVLTG L3402 C3436 C3437 57R01 10uF .033uF L3436 57R01 C3405 C3406 470pF 470pF L3421 57R01 C3438 C3439 470pF 470pF R3491 C3403 C3423 C3422 L3437 C3402 33pF L3403 C3493...
  • Page 218 Section 4: 4-50 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Q3303 9.14VDC (R) UMC5N 9V3_VHF_VCO_3 9V3_VHF_VCO_2 9V3_VHF_VCO_1 0VDC (T) 9.12VDC 4.97VDC VDDA_VHF_VCO_1 3.83VDC (R) VDDA 0VDC (T) 4.54VDC VSF_VHF_VCO_1 7.44VDC (R) L3333 0VDC (T) R3311 C3335 .01uF R3331 R3335...
  • Page 219 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Section 4: 4-51 Q3021 R3006 FECNTL_2_VHF_FE_1 4.7K C3027 FECNTL_2 0.1uF C3026 C3029 0.1uF 330pF R3010 R3025 IF_VHF_FE_1 9V3_VHF_FE_1 R3002 L3031 270nH R3011 9V3_VHF_FE_2 4.7K C3010 C3028 C3000 C3035 C3011 C3007 0.1uF R3031...
  • Page 220 Section 4: 4-52 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists C3153 C3154 C3157 C3158 0.1uF 0.1uF 0.1uF 0.1uF FL3111 FL3113 CFWC455G CFUCJ455F OUT 2 OUT 2 CNTL CNTL CNTL CNTL R3153 U3115-4 U3111-4 U3111-1 U3115-1 MC74HC4066 MC74HC4066 MC74HC4066 MC74HC4066...
  • Page 221 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Section 4: 4-53 R3211 VDDA_VHF_FN_1 VDDA C3212 C3214 2.2uF .018uF VDDA U3211 LP2951 5V_VHF_FN_1 5V_VHF_FN_2 IN_5V_RF_REG_VHF_FN_1 4.97VDC (SOURCE) OUTPUT INPUT IN_5V_RF_REG FEEDBACK 7 13.30VDC ERROR C3213 6.83VDC SENSE SHUTDOWN 2.2uF 5V_TAP C3211...
  • Page 222 Section 4: 4-54 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists † – VHF 1 25 W PCB 8471235L06 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit...
  • Page 223 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Section 4: 4-55 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C3231 2113945L49 CAP,FXD,.01UF,+5%,-5%,50V- C3316 2113944C18 CAP CER CHP 3.3PF 50V +/-...
  • Page 224 Section 4: 4-56 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C3499 2111078B19 CAP CHIP RF 16 5 NPO 100V...
  • Page 225 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Section 4: 4-57 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R3011 0613952H89 CER CHIP RES 4700 OHM 5%...
  • Page 226 Section 4: 4-58 VHF (136–174 MHz) 1–25 W PCB 8471235L06 Schematics, and Parts Lists Circuit Motorola Circuit Motorola Description Description Part No. Part No. R3434 0613958H11 CER CHIP RES 2.7 OHM 5% SH3301 2602641Y03 SHIELD, ARIANE VCO 0805 T3001 2566506A01...
  • Page 227 Table of Contents Chapter 1 Model Charts and Technical Specifications 1.0 UHF Band 1 (403–470 MHz) 1–25 W Model Charts ........5:1-1 1.1 CDM Series Model Chart ................5:1-1 1.2 PRO Series Model Chart................5:1-2 2.0 Technical Specifications ...................5:1-2 Chapter 2 Theory of Operation 1.0 Introduction .......................5:2-1...
  • Page 228 Section 5: ii Chapter 4 UHF Band 1 (403–470 MHz) 1–25 W PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ........... 5:4-1 1.1 Controller Circuits ..................5:4-1 2.0 UHF Band 1 (403–470 MHz) 1–25 W LDMOS PCB 8471224L03, Schematics, and Parts Lists................
  • Page 229 Section 5: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS UHF Band 1 (403–470 MHz) 1–25 W Model Charts CDM Series Model Chart CDM Series, UHF Band 1 (403–470 MHz) 1–25 W (Conventional, LTR/PassPort) Model Description AAM25RHC9AA1AN CDM750, 403–470 MHz, 1–25 W, 12.5/20/25 kHz AAM25RHD9AA2AN CDM1250, 403–470 MHz, 1–25 W, 12.5/20/25 kHz...
  • Page 230 Section 5: 1-2 Technical Specifications PRO Series Model Chart PRO Series, UHF Band 1 (403–470 MHz) 1–25 W Model Description LAM25RHC9AA1AN PRO3100, 403–470 MHz, 1–25 W, 12.5/20/25 kHz Ch Sp LAM25RHD9AA2AN PRO5100, 403–470 MHz, 1–25 W, 12.5/20/25 kHz Ch Sp LAM25RHF9AA5AN PRO7100, 403–470 MHz, 1–25 W, 12.5/20/25 kHz Ch Sp Item...
  • Page 231 Technical Specifications Section 5: 1-3 Transmitter *Frequencies Full Bandsplit UHF 403 470 MHz – – Channel Spacing 12.5/20/25 kHz Frequency Stability ±2.0 ppm (-30°C to +60°C, +25°° Ref.) Power 25 W – Modulation Limiting ±2.5 @ 12.5 kHz ±4.0 @ 20 kHz ±5.0 @ 25 kHz FM Hum &...
  • Page 232 Section 5: 1-4 Technical Specifications Notes 6881091C63-F...
  • Page 233 Section 5: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the UHF circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of this manual.
  • Page 234 Section 5: 2-2 UHF Band 1 (403–470 MHz) 1–25 W Receiver Front-End There are two 2-pole 44.85 MHz crystal filters in the high-IF section and 2 pairs of 455 kHz ceramic filters in the low-IF section to provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25 kHz channel spacing is selected via control line BWSELECT.
  • Page 235 UHF Band 1 (403–470 MHz) 1–25W Transmitter Power Amplifier (PA) 25 W Section 5: 2-3 Low Intermediate Frequency (IF) and Receiver Back-End The 44.85 high IF signal from the second IF amplifier feeds the IF IC (U3101) at pin1. Within the IF IC the 44.85 MHz high IF signal mixes with the 44.395 MHz second local oscillator (2nd LO) to produce the low IF signal at 455 kHz.
  • Page 236 Section 5: 2-4 UHF Band 1 (403–470 MHz) 1–25W Transmitter Power Amplifier (PA) 25 W First Power Controlled Stage The first stage (U4401) is a 20dB gain integrated circuit containing two LDMOS FET amplifier stages. It amplifies the RF signal from the VCO (TXINJ). The output power of stage U4401 is controlled by a DC voltage applied to pin 1 from the op-amp U4402-1, pin 1.
  • Page 237 UHF Band 1 (403–470 MHz) 1–25W Transmitter Power Amplifier (PA) 25 W Section 5: 2-5 Directional Coupler The directional coupler is a microstrip printed circuit, which couples a small amount of the forward power delivered by Q4441. The coupled signal is rectified by D4451. The DC voltage is proportional to the RF output power and feeds the RFIN port of the PCIC (U4501 pin 1).
  • Page 238 Section 5: 2-6 UHF Band 1 (403–470 MHz) 1–25 W Frequency Synthesis U4502 is a temperature-sensing device, which monitors the circuit board temperature in the vicinity of the transmitter driver and final devices, and provides a DC voltage to the PCIC (TEMP, pin 30) proportional to temperature.
  • Page 239 UHF Band 1 (403–470 MHz) 1–25 W Frequency Synthesis Section 5: 2-7 LOCK LOCK (U0101 PIN 56) DATA (U0101 PIN 100) DATA FREFOUT FREF (U0221 PIN 34) CLOCK (U0101 PIN 1) 6, 22, 33, 44 CSX (U0101 PIN 2) STEERING LINE MODIN MOD IN (U0221 PIN 40)
  • Page 240 Section 5: 2-8 UHF Band 1 (403–470 MHz) 1–25 W Frequency Synthesis Voltage Controlled Oscillator (VCO) The Voltage Controlled Oscillator (VCO) consists of the VCO/Buffer IC (VCOBIC, U4301), the TX and RX tank circuits, the external RX buffer stages, and the modulation circuitry. AUX3 (U4201 Pin 2) U4201 Pin 32 Prescaler Out...
  • Page 241 UHF Band 1 (403–470 MHz) 1–25 W Frequency Synthesis Section 5: 2-9 The external RX buffers (Q4332) are enabled by a high at U4201 pin 3 (AUX4) via transistor switch Q4333. In TX mode the modulation signal (VCOMOD) from the LVFRAC-N synthesizer IC (U4201 pin41) is applied modulation circuitry CR4321, R4321, R4322 and C4324, which modulates the TX VCO frequency via coupling capacitor C4321.
  • Page 242 Section 5: 2-10 UHF Band 1 (403–470 MHz) 1–25 W Frequency Synthesis Notes 6881091C63-F...
  • Page 243 Section 5: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20dB Quieting No Recovered Audio Check Controller Audio at (in the case of no audio) pin 8 of OR ELSE go to “B” U3101? Spray or inject 44.85MHz into XTAL Filter FL3101...
  • Page 244 Section 5: 3-2 Troubleshooting Flow Chart for Receiver Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Inject RF into J4401 Trace IF signal from C3101 to IF Signal at signal at Q3102 Q3101. Check for C3101? collector? bad XTAL filter. Before replacing U3101, check U3101 voltages.
  • Page 245 Troubleshooting Flow Chart for 25 W Transmitter Section 5: 3-3 Troubleshooting Flow Chart for 25 W Transmitter (Sheet 1 of 3) START No power or low power when keyed Check if Pressure Pad closes S5440 Check Components between Current Q4441 and RF Output, >500mA &...
  • Page 246 Section 5: 3-4 Troubleshooting Flow Chart for 25 W Transmitter Troubleshooting Flow Chart for 25 W Transmitter (Sheet 2 of 3) Check PA Stages No power or low power when keyed DC Voltage If U4201 Pin 2 is high, at U4501 replace PCIC Pin 23 =0? Check Resistive...
  • Page 247 Troubleshooting Flow Chart for 25 W Transmitter Section 5: 3-5 Troubleshooting Flow Chart for 25 W Transmitter (Sheet 3 of 3 Check Final PA Stage Supply Voltage Bias 2 DC Voltage at Replace Q4441 TP4406? 1-4V Check Components ASFIC RF Voltage between ASFIC and U0221 Pin 6 Check FGU (U4301)
  • Page 248 Section 5: 3-6 Troubleshooting Flow Chart for Synthesizer Troubleshooting Flow Chart for Synthesizer Start Check 5V at U4201 Regulator pins 5, 20, 34 U4211 & 36 Visual Correct check of the Problem Board Check D4201, C4202, C4203, & C4206 16.8MHz 16.8MHz Replace signal at...
  • Page 249 Troubleshooting Flow Chart for VCO Section 5: 3-7 Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP4003 Visual check Visual check Correct of board of board Problem Make sure Synthesizer is...
  • Page 250 Section 5: 3-8 Troubleshooting Flow Chart for PassPort Troubleshooting Flow Chart for PassPort Troubleshooting in PassPort mode must be completed in conventional mode. If any issues related to the option board are discovered, the PassPort board should be replaced. Start Check Radio Operation on a Non-PassPort Zone with a Conventional Personality without...
  • Page 251 Section 5: 4-1 Chapter 4 UHF BAND 1 (403–470 MHZ) 1–25 W PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The UHF circuits are contained on the printed circuit board (PCB) which also contains the controller circuits.
  • Page 252 Section 5: 4-2 Allocation of Schematics and Circuit Boards Table 5-3 UHF Band 1 1–25 W PCB 8485670Z03 Diagrams and Parts Lists PCB 8485670Z03: Page: Main Board Top Side 5: 4-19 Main Board Bottom Side 5: 4-20 SCHEMATICS Power Amplifier 1 – 25 W 5: 4-21 FRACN Synthesizer 5: 4-22...
  • Page 253 UHF Band 1 (403–470 MHz) 1–25 W LDMOS PCB 8471224L03, Schematics, and Parts Lists Section 5: 4-3 UHF Band 1 (403–470 MHz) 1–25 W LDMOS PCB 8471224L03, Schematics, and Parts Lists J0451 R4221 C0251 R0257 C4210 R4224 R4223 C0212 FL3114 Y3102 C4231 C4242...
  • Page 254 Section 5: 4-4 UHF Band 1 (403–470 MHz) 1–25 W LDMOS PCB 8471224L03, Schematics, and Parts Lists R4418 L4436 L4402 L4437 R4429 U4402 E0631 S5440 R4441 C4440 R4445 R4443 R4442 R4440 VR0601 VR0509 C4413 R4412 VR0504 C4414 C4415 R4411 R0531 C4416 R0541 C0541...
  • Page 255 UHF Band 1 (403–470 MHz) 1–25 W LDMOS PCB 8471224L03, Schematics, and Parts Lists Section 5: 4-5 PASUPVLTG_UHF_PA_1 PASUPVLTG L4402 C4436 C4437 C4405 C4406 57R01 L4436 10uF .033uF 100pF 100pF 57R01 9V3_UHF_PA_1 9V3FLT L4421 57R01 C4421 .033uF U_PREDRIVER U_DRIVER C4439 R4491 100pF C4403...
  • Page 256 Section 5: 4-6 UHF Band 1 (403–470 MHz) 1–25 W LDMOS PCB 8471224L03, Schematics, and Parts Lists † – UHF B1 25 40 W PCB 8471224L03 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No.
  • Page 257 UHF Band 1 (403–470 MHz) 1–25 W LDMOS PCB 8471224L03, Schematics, and Parts Lists Section 5: 4-7 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C4510 2113944C45 100pF...
  • Page 258 UHF Band 1 (403–470 MHz) 1–25 W LDMOS PCB 8471224L03, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Description Description * Motorola Depot Servicing only Part No. Part No. Reference designators with an asterisk indicate R4424 0613958H11 2.7 Ohm Y4262...
  • Page 259 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists Section 5: 4-9 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists J0451 R4221 C0251 R0257 R4224 R4223 L4201 Y3102 C0212 C4213 FL3114 C4231 U3115 U0251...
  • Page 260 Section 5: 4-10 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists C3152 C4203 R4203 C3147 TP4201 J0401 C0267 R3152 R4201 C4202 R0267 R4204 C0265 D4201 R4261 R0266 C0254 R3147 FL3115 C4261 C0202 C0497 Q3152 R0206 R0203 C3144 U0652...
  • Page 261 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists Section 5: 4-11 L4402 PASUPVLTG_UHF_PA_1 PASUPVLTG 57R01 C4405 C4406 C4436 C4437 L4436 100pF 100pF 10uF .033uF 57R01 9V3FLT L4421 9V3_UHF_PA_1 57R01 R4513 R4514 9V3FLT C4421 .033uF U_PREDRIVER U_DRIVER C4439 R4491...
  • Page 262 Section 5: 4-12 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists C4212 .018uF U4211 LP2951 5V_UHF_FN_1 5V_UHF_FN_2 IN_5V_RF_REG_UHF_FN_1 4.97 VDC OUTPUT IN_5V_RF_REG (SOURCE) INPUT 6.68 VDC ERROR FEEDBACK SENSE SHUTDOWN C4215 C4211 10.87 VDC C4213 C4216 5V_TAP 2.2uF...
  • Page 263 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists Section 5: 4-13 Q4333 VCOBIAS_2_UHF_VCO 0 VDC (Tx) R4346 2.43 VDC (Rx) VCOBIAS_2 0 VDC (Tx) 4.7 VDC (Rx) C4375 VSF_UHF_VC0 R4301 R4341 4.58 VDC 5V_UHF_VCO RXSW 5.6K C4308 C4336...
  • Page 264 Section 5: 4-14 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists R4071 Q4004 R4072 FECTRL_2_UHF_FE R4061 C4061 C4062 330pF 0.1uF R4002 9V3_UHF_FE R4062 1.5K C4069 R4070 .01uF C4011 C4013 C4012 C4010 R4016 3300pF 330pF 3300pF C4064 330pF 3.3K...
  • Page 265 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists Section 5: 4-15 FL3115 9180469V04 MC74HC4066 FL3113 FL3111 9180469V03 9180468v04 CNTL CNTL CNTL CNTL R3153 U3115-4 U3111-1 U3111-4 U3115-1 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 R3114 BWSELECT 9V3_VHF_IF_2 3.9VDC R3104 FL3112 FL3114 R3115...
  • Page 266 Section 5: 4-16 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists † UHF B1 1–25 W PCB 8485670Z02 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No.
  • Page 267 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z02, Schematics, and Parts Lists Section 5: 4-17 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C4506 2113741F33 2200pF L4301...
  • Page 268 Circuit Motorola Description Part No. R4428 0662057A58 2400 Ohm R4429 0662057A59 2700 Ohm * Motorola Depot Servicing only R4431 0662057C51 Reference designators with an asterisk indicate R4432 0662057C51 components which are not field replaceable R4441 0662057A87 39K Ohm because they need to be calibrated with...
  • Page 269 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists Section 5: 4-19 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists J0451 R4221 C0251 R0257 C4210 C4225 C4221 R4224 C0211 C4289 C0212 C4213 R4223 FL3114...
  • Page 270 Section 5: 4-20 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists C4207 C3152 TP4202 C3146 C4262 C0205 R0208 R4203 C4203 C0255 TP4201 R4201 R3152 C0267 J0401 R3146 C3147 R0265 R4204 C4202 C0492 R0267 R3147 C3151 C0265 C4288 D4201...
  • Page 271 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists Section 5: 4-21 L4402 PASUPVLTG_UHF_PA_1 PASUPVLTG 57R01 C4405 C4406 C4437 C4436 L4436 100pF 100pF .033uF 10uF 57R01 L4421 9V3_UHF_PA_1 9V3FLT 57R01 C4421 .033uF C4439 U_PREDRIVER U_DRIVER 100pF R4491 C4403 9.1pF...
  • Page 272 Section 5: 4-22 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists U4211 ADP3300 5V_UHF_FN_1 5V_UHF_FN_2 IN_5V_RF_REG_UHF_FN_1 4.97 VDC (SOURCE) IN_5V_RF_REG 6.68 VDC C4217 C4216 10.87 VDC C4213 C4211 C4215 .01uF 2.2uF 0.1uF 2.2uF C4203 L4201 C4201 R4224 390nH...
  • Page 273 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists Section 5: 4-23 Q4333 0 VDC (Tx) 0 VDC (Tx) VCOBIAS_2_UHF_VCO 2.43 VDC (Rx) R4346 4.7 VDC (Rx) VCOBIAS_2 C4375 0.1uF VSF_UHF_VC0 R4301 4.58 VDC R4341 5V_UHF_VCO RXSW C4355 C4352...
  • Page 274 Section 5: 4-24 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists R4071 Q4004 R4072 FECTRL_2_UHF_FE R4061 FECTRL_2 C4062 C4061 0.1uF 330pF 9V3_UHF_FE R4002 R4062 R4070 1.5K C4069 .01uF C4012 C4013 C4010 C4011 R4016 330pF 3300pF 330pF C4064 3300pF...
  • Page 275 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists Section 5: 4-25 FL3115 CFWC455F 9180469V04 U3111-1 CFWC455G CFUCJ455F U3111-4 U3115-1 U3115-4 FL3113 FL3111 9180468v04 9180469V03 CNTL CNTL CNTL CNTL R3153 Q3151 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 BWSELECT 9V3_VHF_IF_2 R3114 R3104 U3111-3...
  • Page 276 Section 5: 4-26 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists † UHF B1 1–25 W PCB 8485670Z03 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No.
  • Page 277 UHF Band 1 (403–470 MHz) 1–25 W PCB 8485670Z03, Schematics, and Parts Lists Section 5: 4-27 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C4504 2113741F49 10nF L4006...
  • Page 278 TCXO 16.8MHZ R4423 0662057A87 39K Ohm R4424 0662057C13 2.7 Ohm R4425 0662057C13 2.7 Ohm * Motorola Depot Servicing only R4426 0662057C13 2.7 Ohm Reference designators with an asterisk indicate R4427 0662057C13 2.7 Ohm components which are not field replaceable R4428...
  • Page 279 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Section 5: 4-29 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Q4411 D4401 Q4422 R4424 J0501 R4425 R4404 C4434 R4426 C0603 R4427 C0484 C4441 R4592...
  • Page 280 Section 5: 4-30 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists R4418 L4436 L4402 L4437 R4429 U4402 E0631 S5440 R4441 C4440 R4445 R4443 R4442 R4440 VR0601 R4412 VR0509 VR0504 C4413 TP0530 C4414 C4415 R4411 R0531 R0541 C4416 C0541...
  • Page 281 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Section 5: 4-31 PASUPVLTG_UHF_PA_1 PASUPVLTG L4402 C4436 C4437 C4405 C4406 57R01 L4436 10uF .033uF 100pF 100pF 57R01 9V3_UHF_PA_1 9V3FLT L4421 57R01 C4421 .033uF U_PREDRIVER U_DRIVER C4439 R4491 100pF C4403 C4423...
  • Page 282 Section 5: 4-32 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Q4333 VCOBIAS_2_UHF_VCO 0 VDC (Tx) R4346 2.43 VDC (Rx) VCOBIAS_2 0 VDC (Tx) 4.7 VDC (Rx) C4375 VSF_UHF_VC0 R4301 R4341 4.58 VDC 5V_UHF_VCO RXSW 5.6K C4308 C4336...
  • Page 283 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Section 5: 4-33 R4071 Q4004 R4072 FECTRL_2_UHF_FE R4061 C4061 C4062 330pF 0.1uF R4002 9V3_UHF_FE R4062 1.5K C4069 R4070 .01uF C4011 C4012 C4013 C4010 R4016 3300pF 330pF 3300pF C4064 330pF 3.3K...
  • Page 284 Section 5: 4-34 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists WARISMOBILE UHF_IF FL3115 CFWC455F 1 IN C3154 0.1uF C3158 C3153 C3157 0.1uF 0.1uF 0.1uF U3111-1 MC74HC4066 FL3113 CFUCJ455F FL3111 CFWC455G OUT 2 OUT 2 CNTL CNTL CNTL...
  • Page 285 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Section 5: 4-35 C4212 .018uF U4211 LP2951 5V_UHF_FN_1 5V_UHF_FN_2 IN_5V_RF_REG_UHF_FN_1 4.97 VDC OUTPUT IN_5V_RF_REG (SOURCE) INPUT 6.68 VDC ERROR FEEDBACK SENSE SHUTDOWN C4211 C4215 10.87 VDC C4213 C4216 5V_TAP 2.2uF...
  • Page 286 Section 5: 4-36 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists † UHF 1–25 W PCB 8471224L04 Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit...
  • Page 287 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Section 5: 4-37 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C4221 2113944F13 CAP,CHIP,.01UF,+5%,-5%,50V- C4289 2113945C31 CAP,FXD,.1UF,+10%,-10%,50V-...
  • Page 288 Section 5: 4-38 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C4501 2113945L33 CAP,FXD,2200PF,+5%,-5%,50V- FL3114...
  • Page 289 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Section 5: 4-39 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R3130 0613952H42 CER CHIP RES 51.0 OHM 5%...
  • Page 290 Section 5: 4-40 UHF Band 1 (403–470 MHz) 1–25 W PCB 8471224L04, Schematics, and Parts Lists Circuit Motorola Description Part No. VR4471 4813977M11 DIODE,ZEN,MBZ5232,SM,SOT- 23,5.6V,10MA,.225W,ZEN,PB- FREE Y3101 4802245J84 XTAL 44.395MHZ, 3RD OT, SMD Y3102 9186145B02 CER.DISCR. CDBCA455CX36-TC Y4262 4816142H01 REFERENCE OSCILLATOR †...
  • Page 291 Table of Contents Chapter 1 Model Charts and Technical Specifications 1.0 UHF Band 2 (450–512/527 MHz) 1–25 W Model Charts .........6:1-1 1.1 CDM Series Model Chart ................6:1-1 1.2 PRO Series Model Chart................6:1-2 2.0 Technical Specifications ...................6:1-2 Chapter 2 Theory of Operation 1.0 Introduction .......................6:2-1...
  • Page 292 Section 6: ii Chapter 4 UHF Band 2 (450–512/527 MHz) 1–25 W PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ........... 6:4-1 1.1 Controller Circuits ..................6:4-1 2.0 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists ....................
  • Page 293 Section 6: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS UHF Band 2 (450–512/527 MHz) 1–25 W Model Charts CDM Series Model Chart CDM Series, UHF Band 2 (450–512 MHz) 1–25 W (Conventional, LTR/PassPort) Model Description AAM25SHC9AA1AN CDM750, 450–512 MHz, 1–25 W, 12.5/20/25 kHz AAM25SHD9AA2AN CDM1250, 450–512 MHz, 1–25 W, 12.5/20/25 kHz...

  • Page 294: Pro Series Model Chart

    Section 6: 1-2 Technical Specifications PRO Series Model Chart PRO Series, UHF Band 2 (450–527 MHz) 1–25 W Model Description LAM25SHC9AA1AN PRO3100, 450–527 MHz, 1–25 W, 12.5/20/25 kHz Ch Sp LAM25SHD9AA2AN PRO5100, 450–527 MHz, 1–25 W, 12.5/20/25 kHz Ch Sp LAM25SHF9AA5AN PRO7100, 450–527 MHz, 1–25 W, 12.5/20/25 kHz Ch Sp Item...
  • Page 295 Technical Specifications Section 6: 1-3 Transmitter *Frequencies – Full Bandsplit UHF 450–512 MHz (CDM) UHF 450–527 MHz (PRO) Channel Spacing 12.5/20/25 kHz Frequency Stability ±2.0 ppm (-30°C to +60°C, +25° Ref.) Power 1–25 W Modulation Limiting ±2.5 @ 12.5 kHz ±4.0 @ 20 kHz ±5.0 @ 25 kHz FM Hum &...
  • Page 296 Section 6: 1-4 Technical Specifications Notes 6881091C63-F...

  • Page 297: Chapter 2 Theory Of Operation

    Section 6: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the UHF circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of this manual.

  • Page 298: Front-End Bandpass Filters And Pre-Amplifier

    Section 6: 2-2 UHF Band 2 (450–512/527 MHz) 1–25W Receiver Front-End There are two 2-pole 44.85 MHz crystal filters in the high-IF section and 2 pairs of 455 kHz ceramic filters in the low-IF section to provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25 kHz channel spacing is selected via control line BWSELECT.

  • Page 299: Uhf Band 2 (450-512/527 Mhz) 1-25 W Transmitter Power Amplifier

    UHF Band 2 (450–512/527 MHz) 1–25 W Transmitter Power Amplifier (PA) 25 W Section 6: 2-3 Low Intermediate Frequency (IF) and Receiver Back-End The 44.85 high IF signal from the second IF amplifier feeds the IF IC (U3101) at pin 1. Within the IF IC the 44.85 MHz high IF signal mixes with the 44.395 MHz second local oscillator (2nd LO) to produce the low IF signal at 455 kHz.

  • Page 300: First Power Controlled Stage

    Section 6: 2-4 UHF Band 2 (450–512/527 MHz) 1–25 W Transmitter Power Amplifier (PA) 25 W First Power Controlled Stage The first stage (U5401) is a 20 dB gain integrated circuit containing two LDMOS FET amplifier stages. It amplifies the RF signal from the VCO (TXINJ). The output power of stage U5401 is controlled by a DC voltage applied to pin 1 from the op-amp U5402-1, pin 1.

  • Page 301: Directional Coupler

    UHF Band 2 (450–512/527 MHz) 1–25 W Transmitter Power Amplifier (PA) 25 W Section 6: 2-5 Directional Coupler The directional coupler is a microstrip printed circuit, which couples a small amount of the forward power delivered by Q5441. The coupled signal is rectified by D5451. The DC voltage is proportional to the RF output power and feeds the RFIN port of the PCIC (U5501 pin 1).

  • Page 302: Uhf Band 2 (450-512/527 Mhz) 1-25 W Frequency Synthesis

    Section 6: 2-6 UHF Band 2 (450–512/527 MHz) 1–25 W Frequency Synthesis U5502 is a temperature-sensing device, which monitors the circuit board temperature in the vicinity of the transmitter driver and final devices, and provides a DC voltage to the PCIC (TEMP, pin 30) proportional to temperature.

  • Page 303: Reference Oscillator

    UHF Band 2 (450–512/527 MHz) 1–25 W Frequency Synthesis Section 6: 2-7 LOCK LOCK (U0101 PIN 56) DATA (U0101 PIN 100) DATA FREFOUT FREF (U0221 PIN 34) CLOCK (U0101 PIN 1) 6, 22, 33, 44 CSX (U0101 PIN 2) STEERING LINE MODIN MOD IN (U0221 PIN 40)

  • Page 304: Voltage Controlled Oscillator (Vco)

    Section 6: 2-8 UHF Band 2 (450–512/527 MHz) 1–25 W Frequency Synthesis Voltage Controlled Oscillator (VCO) The Voltage Controlled Oscillator (VCO) consists of the VCO/Buffer IC (VCOBIC, U5301), the TX and RX tank circuits, the external RX buffer stages, and the modulation circuitry. AUX3 (U5201 Pin 2) U5201 Pin 32 Prescaler Out...

  • Page 305: Synthesizer Operation

    UHF Band 2 (450–512/527 MHz) 1–25 W Frequency Synthesis Section 6: 2-9 The external RX buffers (Q5332) are enabled by a high at U5201 pin 3 (AUX4) via transistor switch Q5333. In TX mode the modulation signal (VCOMOD) from the LVFRAC-N synthesizer IC (U5201 pin41) is applied modulation circuitry CR5321, R5321, R5322 and C5324, which modulates the TX VCO frequency via coupling capacitor C5321.
  • Page 306 Section 6: 2-10 UHF Band 2 (450–512/527 MHz) 1–25 W Frequency Synthesis Notes 6881091C63-F...

  • Page 307: Chapter 3 Troubleshooting Charts

    Section 6: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20dB Quieting No Recovered Audio Check Controller Audio at (in the case of no audio) pin 8 of OR ELSE go to “B” U3101? Spray or inject 44.85MHz into XTAL Filter FL3101...
  • Page 308 Section 6: 3-2 Troubleshooting Flow Chart for Receiver Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Inject RF into J5401 Trace IF signal from C3101 to IF Signal at signal at Q3102 Q3101. Check for C3101? collector? bad XTAL filter. Before replacing U3101, check U3101 voltages.
  • Page 309 Troubleshooting Flow Chart for 25 W Transmitter Section 6: 3-3 Troubleshooting Flow Chart for 25 W Transmitter (Sheet 1 of 3) START No power or low power when keyed Check if Pressure Pad closes S5440 Check Components between Current Q5441 and RF Output, >500mA &...
  • Page 310 Section 6: 3-4 Troubleshooting Flow Chart for 25 W Transmitter Troubleshooting Flow Chart for 25 W Transmitter (Sheet 2 of 3) Check PA Stages No power or low power when keyed DC Voltage If U5201 Pin 2 is high, at U5501 replace PCIC Pin 23 =0? Check Resistive...

  • Page 311: Troubleshooting Flow Chart For 25 W Transmitter

    Troubleshooting Flow Chart for 25 W Transmitter Section 6: 3-5 Troubleshooting Flow Chart for 25 W Transmitter (Sheet 3 of 3 Check Final PA Stage Supply Voltage Bias 2 DC Voltage at Replace Q5441 TP5406? 1-4V Check Components ASFIC RF Voltage between ASFIC and U0221 Pin 6 Check FGU (U5301)

  • Page 312: Troubleshooting Flow Chart For Synthesizer

    Section 6: 3-6 Troubleshooting Flow Chart for Synthesizer Troubleshooting Flow Chart for Synthesizer Start Check 5V at U5201 Regulator pins 5, 20, 34 U5211 & 36 Visual Correct check of the Problem Board Check D5201, C5202, C5203, & C5206 16.8MHz 16.8MHz Replace signal at...

  • Page 313: Troubleshooting Flow Chart For Vco

    Troubleshooting Flow Chart for VCO Section 6: 3-7 Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP5003 Visual check Visual check Correct of board of board Problem Make sure Synthesizer is...

  • Page 314: Troubleshooting Flow Chart For Passport

    Section 6: 3-8 Troubleshooting Flow Chart for PassPort Troubleshooting Flow Chart for PassPort Troubleshooting in PassPort mode must be completed in conventional mode. If any issues related to the option board are discovered, the PassPort board should be replaced. Start Check Radio Operation on a Non-PassPort Zone with a Conventional Personality without...
  • Page 315 Section 6: 4-1 Chapter 4 UHF BAND 2 (450–512/527 MHZ) 1–25 W PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The UHF circuits are contained on the printed circuit board (PCB) which also contains the controller circuits.
  • Page 316 Section 6: 4-2 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...
  • Page 317 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists Section 6: 4-3 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists J0451 R5221 C0251 R0257 C5210 1 16 C5213 C0212 L5221 R5223 FL3114 Y3102 R0256...
  • Page 318 Section 6: 4-4 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists TP5202 C3146 C3152 C5203 C0267 R5203 C0255 TP5201 R3152 J0401 R3146 R5204 R0267 C5202 C0492 D5201 C0265 Q3152 U0653 R0468 R5261 C0254 R3147 C5288 C0202 FL3113 C0497...
  • Page 319 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists Section 6: 4-5 PASUPVLTG_UHF_PA_1 PASUPVLTG L5402 C5436 C5421 C5482 C5405 C5406 L5436 57R01 10uF .033uF 100pF 100pF 30pF 57R01 C5437 .033uF 9V3_UHF_PA_1 9V3FLT L5421 57R01 C5483 .033uF C5481 U_PREDRIVER .033uF...
  • Page 320 Section 6: 4-6 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists U5211 ADP3300 5V_UHF_FN_1 5V_UHF_FN_2 C5217 IN_5V_RF_REG_UHF_FN_1 4.97 Vdc .01uF (SOURCE) IN_5V_RF_REG 6.6 Vdc C5211 C5215 C5216 R5224 0.1uF 2.2uF 10.87 Vdc C5213 .01uF 2.2uF L5201 C5201 390nH...
  • Page 321 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists Section 6: 4-7 Q5333 VCOBIAS_2_UHF_VCO VCOBIAS_2 R5346 4.2 Vdc (Rx) 4.5 Vdc (Rx) 0 Vdc (Tx) 0 Vdc (Tx) C5375 R5341 R5301 4.5 Vdc VSF_UHF_VC0 5V_UHF_VCO 5.6K RXSW C5308 0.1uF...
  • Page 322 Section 6: 4-8 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists R5071 R5061 FECTRL_2_UHF_FE R5072 FECTRL_2 C5062 C5061 0.1uF 330pF Q5004 R5002 9V3_UHF_FE R5062 1.5K C5069 R5070 .01uF C5010 C501 C5012 C5013 330pF 3300pF 330pF 3300pF C5064 R5016...
  • Page 323 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists Section 6: 4-9 FL3115 CFWC455F 9180469V04 U3111-1 CFUCJ455F CFWC455G U3111-4 U3115-1 U3115-4 FL3113 FL3111 9180468v04 9180469V03 CNTL CNTL CNTL CNTL R3153 Q3151 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 BWSELECT 9V3_VHF_IF_2 R3114 R3104 U3111-3...
  • Page 324 Section 6: 4-10 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists † UHF B2 1–25 W PCB 8485671Z03 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No.
  • Page 325 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists Section 6: 4-11 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C5032 2113740F25 8.2pF C5289 2113743E20 0.1uF...
  • Page 326 Section 6: 4-12 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. L5008 2462587T23 470nH Q3151...
  • Page 327 0662057A97 100K R5346 0662057A73 SH5302 2602641Y02 SHIELD R5016 0662057A61 3.3K R5347 0662057B47 T5051 2505515V03 TRANSFORMER 4:1 * Motorola Depot Servicing only R5018 0662057A61 3.3K R5361 0662057A31 T5052 2508397X02 TRANSFORMER 1:1 Reference designators with an asterisk indicate R5020 0662057A01 R5362 0662057A01...
  • Page 328 Section 6: 4-14 UHF Band 2 (450–512/527 MHz) 1–25 W PCB 8485671Z03, Schematics, and Parts Lists Notes 6881091C63-F...
  • Page 329 Chapter 1 Model Charts and Technical Specifications 1.0 Low Band Range 1 (29.7–36 MHz) Model Charts ..........7:1-1 1.1 CDM Series Model Chart ................7:1-1 1.2 PRO Series Model Chart ................7:1-1 2.0 Low Band Range 2 (36–42 MHz) Model Charts ..........7:1-2 2.1 CDM Series Model Chart................7:1-2 2.2 PRO Series Model Chart ................7:1-2...
  • Page 330 Section 7: ii Chapter 3 Troubleshooting Charts 1.0 Troubleshooting Flow Chart for Receiver ............7:3-1 2.0 Troubleshooting Flow Chart for Transmitter .............7:3-3 3.0 Troubleshooting Flow Chart for Synthesizer.............7:3-4 4.0 Troubleshooting Flow Chart for VCO..............7:3-5 Chapter 4 Low Band PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ............7:4-1 1.1 Controller Circuits ..................7:4-1 2.0 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists ..7:4-5...
  • Page 331 Section 7: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS Low Band Range 1 (29.7–36 MHz) Model Charts CDM Series Model Chart CDM Series, Low Band Range 1 (29.7–36 MHz) Model Description AAM25BKC9AA1AN CDM750, 29.7 36 MHz, 40–60 W, 20 kHz –...
  • Page 332 Section 7: 1-2 Low Band Range 2 (36–42 MHz) Model Charts Low Band Range 2 (36–42 MHz) Model Charts CDM Series Model Chart CDM Series, Low Band Range 2 (36–42 MHz) Model Description AAM25CKC9AA1AN CDM750, 36–42 MHz, 40–60 W, 20 kHz AAM25CKD9AA2AN CDM1250, 36–42 MHz, 40–60 W, 20 kHz...
  • Page 333 Low Band Range 3 (42–50 MHz) Model Charts Section 7: 1-3 Low Band Range 3 (42–50 MHz) Model Charts CDM Series Model Chart CDM Series, Low Band Range 3 (42–50 MHz) Model Description AAM25DKC9AA1AN CDM750, 42–50 MHz, 40–60 W, 20 kHz AAM25DKD9AA2AN CDM1250, 42–50 MHz, 40–60 W, 20 kHz...
  • Page 334 Section 7: 1-4 Technical Specifications Technical Specifications Data is specified for +25°C unless otherwise stated. General Specifications Channel Capacity CDM750 CDM1250/PRO5100 CDM1550 Power Supply 13.2 Vdc (10.8 – 15.6 Vdc) Dimensions: H x W x D (in./mm) 40–60 W: CDM750 2.32 in.
  • Page 335 Technical Specifications Section 7: 1-5 Transmitter Low Band *Frequencies Full Bandsplit Low Band 1 29.7 36.0 MHz – – Low Band 2 36.0 42.0 MHz – Low Band 3 42.0 50.0 MHz – Channel Spacing 12.5/20/30 kHz Frequency Stability ±5 ppm (-30°C to +60°C, +25°...
  • Page 336 Section 7: 1-6 Technical Specifications Receiver Low Band Audio Response +1 to -3 dB TIA/EIA box (300 3000Hz @ 20/25 kHz – (300 2550Hz @12.5 kHz) – Conducted Spurious Emission -57 dBm <1 GHz -47 dBm >1 GHz *Availability subject to the laws and regulations of individual countries. For Low Band models only, both 20 kHz and 25 kHz channel spacings give the same maximum system deviation of 5 kHz;...
  • Page 337 Section 7: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the low band circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of this manual.
  • Page 338 Section 7: 2-2 Low Band Receiver Front-End There are two 2-pole 10.7 MHz crystal filters in the high-IF section and two switched pairs of 455 kHz ceramic filters in the low-IF section to provide the required adjacent channel selectivity. The second IF at 455 kHz is mixed, amplified and demodulated in the IF IC.
  • Page 339 Low Band Receiver Front-End Section 7: 2-3 When the blanker switches turn “on” to mute the IF signal, they momentarily change the impedance of resonant circuits L1104 and L1105 from high to very low. This abrupt impedance change, if presented to the high-Q crystal filter FL1102, would cause ringing of the filter response, stretching an otherwise narrow impulse into a long and audible output waveform.
  • Page 340 Section 7: 2-4 Low Band Transmitter Power Amplifier (PA) 60 W If the repetition rate of noise impulses is so rapid that the noise blanker can no longer blank them individually, as indicated by a large increase in high-frequency content at the output of Q1604, stage Q1607 amplifies this level and turns on level detector Q1609.
  • Page 341 Low Band Transmitter Power Amplifier (PA) 60 W Section 7: 2-5 Driver Stage The next stage is an LDMOS device (Q1401) providing a gain of 13 dB. This device requires a positive gate bias and a quiescent current flow for proper operation. The voltage of the line MOSBIAS_1 is set during transmit mode by the PCIC pin 24, and fed to the gate of Q1401 via resistors R1402, R1447, R1449, R1458, R1459, and R1463.
  • Page 342 Section 7: 2-6 Low Band Transmitter Power Amplifier (PA) 60 W Power Control The transmitter uses the Power Control IC (PCIC, U1503) to control the power output of the radio. A differential DC amplifier U1502-1 compares the voltage drop across current-measuring resistor R1409, which is proportional to the transmitter final stage DC current, with the voltage drop across resistors R1508 and R1535, which is proportional to the current through transistor Q1503.
  • Page 343 Low Band Frequency Synthesis Section 7: 2-7 Low Band Frequency Synthesis The frequency synthesizer subsystem, shown in Figure 7-3, consists of the reference oscillator crystal (Y1201), the Low Voltage Fractional-N synthesizer (LVFRAC-N, U1201), and the receive and transmit VCOs and buffers (Q1303 through Q1308 and associated components). LOCK LOCK (U0101 PIN 56) DATA (U0101 PIN 100)
  • Page 344 Section 7: 2-8 Low Band Frequency Synthesis In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin VCP (U1201 pin 47), a capacitive voltage multiplier circuit (CR1202 and C1209) generates a voltage of 13 volts DC.
  • Page 345 Low Band Frequency Synthesis Section 7: 2-9 The VCOs, together with Fractional-N synthesizer U1201, generates the required frequencies for transmit and receive modes. The TRB line (U1201, pin 2) determines which VCO/buffer circuit is to be enabled. A high level on TRB will turn on the transistors in U1378 to turn on via R1376, applying the 8.3 volt VSF source to the receiver VCO and first buffer.
  • Page 346 Section 7: 2-10 Low Band Frequency Synthesis To reduce synthesizer lock time when new frequency data has been loaded into the synthesizer the magnitude of the loop current is increased by enabling the IADAPT (U1201-45) for a certain software programmable time (Adapt Mode). The adapt mode timer is started by a low to high transition of the CSX line.
  • Page 347 Section 7: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20dB Quieting No Recovered Audio Audio at pin 8 Check Controller (in the case of no audio). of U1103? Or else go to “B” Spray or inject 10.7MHz into XTAL Filter FL1102.
  • Page 348 Section 7: 3-2 Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Troubleshooting Flow Chart for Receiver Inject RF into J1401 Trace IF signal IF Signal IF signal at from C1036 to at pin 2 of Q1106 Q1106. Check for U1051 collector? bad XTAL filter.
  • Page 349 Troubleshooting Flow Chart for Transmitter Section 7: 3-3 Troubleshooting Flow Chart for Transmitter START No or Low Power Out Check Pressure Pad Safety and/or Switch Switch Circuitry > 1 A < 1 A DC Voltage @Drains of CURRENT Q1402 & Q1403 Look for <<18V pp...
  • Page 350 Section 7: 3-4 Troubleshooting Flow Chart for Synthesizer Troubleshooting Flow Chart for Synthesizer 5V at Check 5V U1201 pins Start Regulator U1250, 5, 13, 20, 34 L1201 & R1201 & 36 Visual Check CR1202, Correct C1209-11, check of the Problem Board OK? C1229, &...
  • Page 351 Troubleshooting Flow Chart for VCO Section 7: 3-5 Troubleshooting Flow Chart for VCO RX VCO TX VCO LOW OR NO RF SIGNAL LOW OR NO RF SIGNAL AT INPUT TO PA AT U1051 VISUAL CHECK VISUAL CHECK CORRECT OF BOARD OF BOARD PROBLEM MAKE SURE SYNTHESIZER IS...
  • Page 352 Section 7: 3-6 Troubleshooting Flow Chart for VCO Notes 6881091C63-F...
  • Page 353 Section 7: 4-1 Chapter 4 LOW BAND PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The low band circuits are contained on the printed circuit board (PCB) which also contains the controller circuits. This chapter shows the schematics for the low band circuits only. Refer to the controller section for details of the related controller circuits.
  • Page 354 Section 7: 4-2 Allocation of Schematics and Circuit Boards Table 7-2 Low Band Range 2 Diagrams and Parts Lists Main Board (Top Side & Bottom Side): Page: PCB 8486207B05 7: 4-28 & 7: 4-29 PCB 8486207B07: 7: 4-30 & 7: 4-31 PCB 8486207B08: 7: 4-32 &...
  • Page 355 Allocation of Schematics and Circuit Boards Section 7: 4-3 Table 7-3 Low Band Range 3 Diagrams and Parts Lists Main Board (Top Side & Bottom Side) Page: PCB 8485908Z02 7: 4-66 & 7: 4-67 PCB 8485908Z04 7: 4-68 & 7: 4-69 PCB 8485908Z05 7: 4-70 &...
  • Page 356 Section 7: 4-4 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...
  • Page 357 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-5 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists J0451 C0255 R0256 L1107 GNDB GNDA C1024 C0212 C0256 C0254 Y1101 R1131 L1008 R1113 R0269 C1131 C0261...
  • Page 358 Section 7 : 4-6 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists C1120 R0255 R0266 R0268 R0257 R1111 C1114 J0401 R0208 R0267 R1139 C1152 L1108 C0267 C0492 C0205 C0266 C1116 C1119 R0265 L1106 U0653 C1115 R1121 R1115 R0206 C0265 R0204...
  • Page 359 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-7 J0451 C0211 R0256 L1107 GNDB GNDA C0212 C0256 U0251 R0252 Y1101 L1008 R1113 U0211 R0269 C1145 R1136 C1129 Q1102 C0261 R0441 R0212 R1011 R0261 C1039 R0251 R1122 C0252...
  • Page 360 Section 7 : 4-8 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists C1120 J0401 R0255 R0266 R0268 R0267 R0257 C1114 R1111 C1152 R0208 R1139 L1108 C1116 C0205 R0206 C0266 C0267 C0492 C1119 R0265 L1106 R1121 C1115 R1115 R0203 TP0222 C0202...
  • Page 361 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-9 C1457 RXIN_PA_1 PASUPVLTG_PA_1 RXIN PASUPVLTG PASUPVLTG .01uF R1410 R1481 C1435 C1436 C1456 D1402 TSENSE .01uF 2Vdc 100pF L1420 MOSBIAS_2_SW C1458 250.974nH C1485 10uF TP1402 .01uF L1419 C1445 27uH...
  • Page 362 Section 7 : 4-10 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists 0.825V TP1505 TEMPSENSE_PA_1 TEMPSENSE 9T1_PA_1 K9V1_PA_1 K9V1 Q1501 CSX_PA_1 R1501 R1522 DATA_PA_1 DATA CLK_PA_1 9V3_PA_1 R1504 Q1502 RESET_PA_1 RESET C1501 PCIC_MOSBIAS_1 FECNTL_1_PA_1 C1502 FECNTL_1 2200pF 2200pF FECNTL_2_PA_1 R1503...
  • Page 363 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-11 U1377 U1378 0VDC (R) TRB_VCO_1 4.7VDC (T) TX_8.5V VSF_VCO_1 R1376 4.7K C1307 L1307 L1305 8.5VDC (R) 47pF R1308 27uH 8.2VDC (R) 27uH 0VDC (T) CR1306 C1308 C1306 C1312...
  • Page 364 Section 7 : 4-12 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Q1003 9.03VDC (R) R1007 R1006 MMBT3906 9V3_FE_1 4.00VDC 0VDC (T) 9.14VDC 8.2K U1001 UMC5N C1031 Q1002 R1005 0.1uF MMBT3906 0VDC (R) 9T1_FE_1 9.1VDC (T) 1.47VDC 4.60VDC 8.36VDC (R) 9.1VDC (T)
  • Page 365 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-13 BLNKR_SWITCH_IF_1 R1114 BLNKR_SWITCH 4.3K R1113 4.3K 9V3_IF_1 9V3_IF_2 R1106 R1108 3.3K 5.94 V R1110 C1108 C1105 R1107 0.1uF 0.1uF 6.2K L1110 33uH Q1102 FL1102 L1105 L1104 C1113 FILTER...
  • Page 366 Section 7 : 4-14 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists FL1104 FL1106 CFUCJ455F U1102-3 CFWC455F U1102-2 U1101-3 U1101-2 MC74HC4066 MC74HC4066 OUT 2 MC74HC4066 MC74HC4066 1 IN CNTL CNTL CNTL CNTL R1129 Q1105 R1128 C1139 R1124 R1125 R1126 R1127...
  • Page 367 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-15 BLNKR_SWITCH_IF_1 R1114 BLNKR_SWITCH 4.3K R1113 4.3K 9V3_IF_1 9V3_IF_2 R1108 R1106 3.3K 5.94V R1110 C1105 C1108 R1107 0.1uF 6.2K 0.1uF L1110 Q1103 Q1102 33uH FL1102 L1104 L1105 FILTER C1113...
  • Page 368 Section 7 : 4-16 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists FL1106 U1101-3 FL1104 U1101-2 U1102-3 CFWC455F U1102-2 MC74HC4066 CFUCJ455F MC74HC4066 MC74HC4066 MC74HC4066 1 IN OUT 2 CNTL CNTL CNTL CNTL R1129 R1128 Q1105 C1139 R1124 R1125 R1126 R1127...
  • Page 369 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-17 Q1601 9V3_NOISE_BLNKR_1 9V3_NOISE_BLNKR_2 C1601 0.1uF R1601 R1602 L1604 Q1602 4.7K NOISE_BLNKR_NOISE_BLNKR_1 47uH NOISE_BLNKR R1635 L1601 C1632 47uH 0.1uF C1605 C1611 R1611 10uF 0.1uF R1608 R1614 R1610 2.2K R1605...
  • Page 370 Section 7 : 4-18 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Y1202 16.8MHz TTS05V FN0:NP C1252 .018uF VCNTL R1222 U1250 Comment: The NOISE_BLNKR line is required because it LP2951 IN_5V_RF_REG_FRACN_1 5V_FRACN_1 5V_FRACN_2 FN0:NP is routed through the FracN from the Controller. IN_5V_RF_REG INPUT OUTPUT...
  • Page 371 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-19 † Low Band R1 PCB 8486206B06 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola...
  • Page 372 Section 7 : 4-20 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1484 2113741F33 2200pF CR1314 4880154K03...
  • Page 373 0662057A49 R1311 0662057A73 R1445 0662057A68 6.2K R1543 0662057A49 R1312 0662057A51 1.2K R1447 0662057B47 R1544 0662057A90 * Motorola Depot Servicing only R1313 0662057A51 1.2K R1449 0611079A64 R1545 0662057A65 4.7K Reference designators with an asterisk indicate R1314 0662057A37 R1450 0683962T71 R1601 0662057A73...
  • Page 374 Section 7 : 4-22 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists † Low Band R1 PCB 8486206B08 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola...
  • Page 375 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-23 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1035 2113740F50 CAP, 91pF C1147...
  • Page 376 Section 7 : 4-24 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1466 2113741A45 CAP, .01uF C1611 2113743E20 CAP, 0.1uF...
  • Page 377 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-25 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. Q0177 4880048M01 DTC144EKA R0105 0662057A97...
  • Page 378 Section 7 : 4-26 Low Band Range 1 (29.7–36 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R1111 0662057A17 RES, 47 R1222...
  • Page 379 VCO SHIELD Y1202 NOTPLACED - U0101 5102226J56 MC68HC11FL0 U0111 5102463J64 EEPROM U0121 5186137B01 FLASH ROM * Motorola Depot Servicing only U0122 5185748L01 SRAM U0141 5113805A30 REMUX Reference designators with an asterisk indicate U0211 5183222M49 MC3403 components which are not field-replaceable...
  • Page 380 Section 7 : 4-28 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists J0451 C0251 R0256 C0211 L1107 GNDB GNDA C1024 C0212 C0256 Y1101 R1131 L1008 U0251 R1113 C1131 U0211...
  • Page 381 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-29 R0255 R0268 R0266 R1111 C1152 C1114 C1120 J0401 R0208 R0267 L1108 R1139 C0267 C0492 R0206 C1116 C0205 R0265 L1106 U0653 C1115 R1121 C0266 R1115 TP0222 C0265 C0202 R1116...
  • Page 382 Section 7 : 4-30 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists C0251 J0451 R0256 L1107 GNDB GNDA C0212 C0256 Y1101 L1008 R1113 U0251 R0269 U0211 C1129 C1131 Q1102 R0212 C0261 R1136 R0441 C1145 C1130 R1011 R0261 C1039 R1114 R1122...
  • Page 383 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-31 J0401 C1120 R0255 R0266 R0268 R0267 R0257 C1114 R1111 R0208 C1152 R1139 L1108 C1119 C0492 R0206 C0266 C0267 C1116 R1121 R0265 L1106 C1115 C0205 R1115 R0203 TP0222 C0202...
  • Page 384 Section 7 : 4-32 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists J0451 C0212 R0256 L1107 GNDB GNDA C0256 Y1101 L1008 R1113 R0269 C0261 R1114 R0212 R0441 R1136 C1129 C1145 R0251 R0261 R1122 C1130 Q1102 C1020 R1123 R0262 R1137 C1125...
  • Page 385 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-33 L1108 R0255 R1139 C1114 R1111 J0401 R0208 C1152 C0267 C0492 C0205 R0265 L1106 C1115 R1115 R0203 R1116 C1113 U0652 Q1104 C1151 TP0222 R0204 C1150 R0202 TP0221 R1138 C1112...
  • Page 386 Section 7 : 4-34 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists J0451 R0256 C0255 L1107 GNDB GNDA C0212 C0256 Y1101 L1008 C0254 R1113 R0269 Q1102 R1136 C1129 C1131 C0261 R1114 R0212 R0441 C1145 R0251 R1122 C1130 R0261 C1020 R1137...
  • Page 387 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-35 L1108 R0255 R0266 R1139 C1114 R1111 J0401 R0208 C1152 C0267 C0492 C0205 R0265 L1106 C1115 R0206 R1115 C0265 C1113 R1116 U0652 Q1104 C1151 TP0222 R0204 C1150 C1121 R1138...
  • Page 388 Section 7 : 4-36 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists C1457 RXIN_PA_1 RXIN .01uF C1456 D1402 L1420 75pF PASUPVLTG_PA_1 196.876nH PASUPVLTG PASUPVLTG R1410 C1435 C1436 C1458 2 Vdc .01uF MOSBIAS_2_SW 10uF C1445 L1419 27uH 1.8V-2.2V .01uF R1409 L1423...
  • Page 389 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-37 RXIN_PA_1 RXIN C1456 C1457 D1402 .01uF 75pF L1420 PASUPVLTG_PA_1 196.876nH PASUPVLTG PASUPVLTG R1410 C1435 C1436 .01uF 2.0 Vdc MOSBIAS_2_SW C1458 10uF C1445 L1419 .01uF 27uH R1409 C1447 1.8V-2.2V...
  • Page 390 Section 7 : 4-38 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists 0.825V TP1505 TEST_POINT TEMPSENSE_PA_1 TEMPSENSE 9T1_PA_1 K9V1_PA_1 K9V1 Q1501 CSX_PA_1 R1522 R1501 DATA_PA_1 C1523 DATA 0.1uF CLK_PA_1 9V3_PA_1 R1504 Q1502 RESET_PA_1 C1501 RESET 2200pF PCIC_MOSBIAS_1 FECNTL_1_PA_1 C1502 FECNTL_1...
  • Page 391 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-39 U1377 U1378 0VDC (R) TRB_VCO_1 4.7VDC (T) TX_8.5V VSF_VCO_1 R1376 4.7K L1305 L1307 8.5VDC (R) C1307 27uH R1308 27uH 8.2VDC (R) 0VDC (T) 24pF L1309 CR1306 C1312 R1312...
  • Page 392 Section 7 : 4-40 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Q1003 9.03VDC (R) R1007 R1006 MMBT3906 9V3_FE_1 0VDC (T) 4.05VDC 9.14VDC 8.2K U1001 UMC5N C1031 R1005 0.1uF Q1002 0VDC (R) MMBT3906 9T1_FE_1 1.33VDC 4.64VDC 9.1VDC (T) 8.36VDC (R) C1028 9.1VDC (T)
  • Page 393 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-41 Q1601 9V3_NOISE_BLNKR_1 9V3_NOISE_BLNKR_2 C1601 0.1uF R1601 L1604 47uH R1602 4.7K NOISE_BLNKR_NOISE_BLNKR_1 NOISE_BLNKR R1635 C1632 L1601 0.1uF Q1602 47uH C1605 10uF R1608 2.2K C1607 R1605 R1607 C1628 L1602 100pF...
  • Page 394 Section 7 : 4-42 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Y1202 TTS05V 16.8MHz FN0:NP C1252 .018uF VCNTL R1222 U1250 FN0:NP LP2951 IN_5V_RF_REG_FRACN_1 5V_FRACN_1 5V_FRACN_2 COMMENT: THE NOISE_BLNKR LINE IS REQUIRED BECAUSE IT OUTPUT 1 IS ROUTED THROUGH THE FracN FROM THE CONTROLLER. IN_5V_RF_REG INPUT FEEDBACK...
  • Page 395 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-43 Low Band Range 2 PCB 8486207B05 Parts Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description List Part No. Part No. Part No. Circuit Motorola...
  • Page 396 Section 7 : 4-44 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1142 2113743E20 CAP, 0.1uF C1304...
  • Page 397 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-45 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1607 2113740F51 CAP, 100pF E1403...
  • Page 398 Section 7 : 4-46 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R0121 0662057A97 100K R0269 0662057A41...
  • Page 399 RES, 0 Y1202 NOT PLACED R1441 NOT PLACED R1513 0662057C76 RES, 1.1K R1636 0662057A42 RES, 510 * Motorola Depot Servicing only R1442 0662057B47 RES, 0 R1514 0662057A97 RES, 100K R1637 0662057A59 RES, 2.7K Reference designators with an asterisk indicate R1443...
  • Page 400 Section 7 : 4-48 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Low Band Range 2 PCB 8486207B07 Parts Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description List Part No. Part No. Part No. C0254 2113743E20 CAP, 0.1uF...
  • Page 401 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-49 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1034 2113740F51 CAP, 100pF C1148 2113743E20 CAP, 0.1uF...
  • Page 402 Section 7 : 4-50 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1465 2113928E01 CAP, 1uF C1612...
  • Page 403 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-51 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. Q0183 4880048M01 DTC144EKA R0107 Not Placed...
  • Page 404 Section 7 : 4-52 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R1114 0662057A64 RES, 4.3K R1307...
  • Page 405 *Y1201 4880114R04 CRYSTAL, 16.8 MHZ SH1302 2680473U01 VCO SHIELD Y1202 Not Placed U0101 5102226J56 MC68HC11FL0 * Motorola Depot Servicing only U0111 5102463J64 EEPROM Reference designators with an asterisk indicate U0121 5186137B01 FLASH ROM components which are not field-replaceable U0122 5185748L01...
  • Page 406 Section 7 : 4-54 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Low Band Range 2 PCB 8486207B08 Parts Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description List Part No. Part No. Part No. C0262 2113740F49...
  • Page 407 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-55 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1010 2113740F46 CAP CHIP REEL CL1 +/-30...
  • Page 408 Section 7 : 4-56 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1335 2113740F19 CAP CHIP REEL CL1 +/-30 4...
  • Page 409 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-57 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1607 2113740F51 CAP CHIP REEL CL1 +/-30...
  • Page 410 Section 7 : 4-58 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. L1604 2483411T45 INDUCTOR CHIP SHIELDED...
  • Page 411 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-59 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R0642 6.60076E+75 RES CHIP FILM 7500 1 1/8...
  • Page 412 4809939C05 TSTR DUAL NPN/PNP UMH Y1201 4880114R04 CRYSTAL 16.8 MHZ R1604 0662057A49 CHIP RES 1000 OHMS 5% * Motorola Depot Servicing only R1605 0662057B10 CHIP RES 330K OHMS 5% U1051 5108278X01 MINICKTS DBM ADE-1H-1 Reference designators with an asterisk indicate...
  • Page 413 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-61 Low Band Range 2 PCB 8486207B11 Parts Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description List Part No. Part No. Part No. C0293 2314030J26...
  • Page 414 Section 7 : 4-62 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1139 2113945L49 CAP, .01uF C1312 2113945L49 CAP, .01uF...
  • Page 415 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-63 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. CR1202 4802233J09 DIODE TRIPLE SOT25-RH...
  • Page 416 Section 7 : 4-64 Low Band Range 2 (36–42 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R0212 0613958D85 RES, 7500 R0543...
  • Page 417 R1629 0613952H91 RES, 5600 Y1202 4816142H01 REFERENCE OSCILLATOR R1504 0613952J01 RES, 10K R1630 0613952H77 RES, 1500 * Motorola Depot Servicing only R1505 0613952H93 RES, 6800 R1631 0613952H31 RES, 18 Reference designators with an asterisk indicate R1506 0613952J15 RES, 39K R1632...
  • Page 418 Section 7 : 4-66 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists J0451 R0256 C0212 L1107 GNDB GNDA C0256 Y1101 L1008 U0251 U0211 R1113 R0269 C1131 C0261 R1136 R1122...
  • Page 419 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-67 L1108 R0255 R0266 R0268 R1139 R1111 C1152 J0401 R0208 C1114 C0267 C0492 L1106 C0205 R0265 U0653 C1115 R1115 C0265 R1116 L1009 C1113 Q1104 C1151 TP0222 U0652 R0204 C1150...
  • Page 420 Section 7 : 4-68 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists C0251 J0451 C0211 R0256 L1107 GNDB GNDA C1024 C0212 C0256 R0252 U0211 Y1101 L1008 R1113 U0251 R0269 C1131 C0261 C1145 R1136 C1129 Q1102 R0212 R0441 C0121 C1130 R1011...
  • Page 421 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-69 C1120 R0255 J0401 R0266 R0268 R0267 R0257 C1114 R1111 C1152 R0208 R1139 L1108 C0267 C1116 C1119 C0205 R0206 C0492 R1121 C0266 R0265 L1106 C1115 R0203 R1115 TP0222 C0202...
  • Page 422 Section 7 : 4-70 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists J0451 C0212 R0256 C0255 L1107 GNDB GNDA C0256 Y1101 L1008 C0254 Q1102 R1113 R0269 C0261 R1136 C1129 C1131 R0441 R1114 R0212 C1145 R0251 R0261 C1130 C1020 R1122 R1123...
  • Page 423 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-71 L1108 R0255 R0268 R1139 C1114 R1111 J0401 R0208 C1152 C0267 C0492 C0205 R0265 L1106 C1115 R1115 C0265 R1116 C1113 U0652 Q1104 C1151 TP0222 R0204 C1150 R1138 TP0221 C1121...
  • Page 424 Section 7 : 4-72 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists J0451 C0212 R0256 C0255 L1107 GNDB GNDA C0256 Y1101 L1008 C0254 R1113 R0269 Q1102 C1131 C0261 R0441 R1136 C1129 R1114 R0212 C1145 R1011 R0251 R0261 R1122 C1130 C1020...
  • Page 425 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-73 L1108 R0266 R0268 R1139 C1114 R1111 R0255 J0401 R0208 C1152 C0492 C0267 C0205 L1106 C1115 R0265 R1115 R1116 C1113 C0265 U0652 TP0222 C1151 R0204 C1150 C1121 TP0221 R1138...
  • Page 426 Section 7 : 4-74 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists C1457 RXIN_PA_1 PASUPVLTG_PA_1 PASUPVLTG PASUPVLTG .01uF R1410 MOSBIAS_2_SW C1435 C1436 C1456 D1402 C1458 L1420 .01uF 51pF 10uF 172.891nH L1419 C1445 .01uF 27uH 1.8V-2.1V R1409 FN0:NP TP1402 C1447 L1421...
  • Page 427 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-75 C1457 .01uF RXIN_PA_1 PASUPVLTG_PA_1 RXIN PASUPVLTG PASUPVLTG R1410 C1435 C1436 C1456 MOSBIAS_2_SW .01uF 51pF D1402 L1420 C1458 10uF 172.891nH C1445 L1419 .01uF 27uH 1.8V-2.1V R1409 C1447 TP1402 470pF...
  • Page 428 Section 7 : 4-76 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists 0.825V TP1505 TEMPSENSE_PA_1 TEMPSENSE 9T1_PA_1 K9V1_PA_1 K9V1 Q1501 CSX_PA_1 R1501 R1522 DATA_PA_1 C1523 DATA 0.1uF CLK_PA_1 9V3_PA_1 R1504 Q1502 RESET_PA_1 RESET C1501 PCIC_MOSBIAS_1 FECNTL_1_PA_1 C1502 FECNTL_1 2200pF 2200pF...
  • Page 429 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-77 U1377 U1378 0VDC (R) TRB_VCO_1 4.7VDC (T) TX_8.5V VSF_VCO_1 R1376 4.7K L1307 C1307 8.5VDC (R) L1305 R1308 18uH 8.2VDC (R) 0VDC (T) 18uH 13pF C1312 CR1306 L1309 C1306...
  • Page 430 Section 7 : 4-78 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists 9.03VDC (R) R1007 R1006 Q1003 9V3_FE_1 4.00VDC 0VDC (T) 9.14VDC 8.2K U1001 UMC5N C1031 R1005 0.1uF Q1002 0VDC (R) 9T1_FE_1 1.47VDC 4.60VDC 9.1VDC (T) 8.36VDC (R) C1028 9.1VDC (T) R1004...
  • Page 431 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-79 Y1202 16.8MHz TTS05V FN0:NP C1252 .018uF VCNTL Comment: The NOISE_BLNKR line is required because it is routed through the FracN from the Controller. R1222 U1250 FN0:NP LP2951 IN_5V_RF_REG_FRACN_1...
  • Page 432 Section 7 : 4-80 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists † Low Band R3 PCB 8485908Z02 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola...
  • Page 433 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-81 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1505 2113741F25 1000pF D1502 4813833C02...
  • Page 434 0662057A90 Y1202 NOTPLACED R1309 0662057A41 R1443 0662057A49 R1541 0662057A68 6.2K R1311 0662057A73 R1444 0662057A33 R1542 0662057A49 * Motorola Depot Servicing only R1312 0662057A51 1.2K R1445 0662057A68 6.2K R1543 0662057A49 R1313 0662057A51 1.2K R1447 0662057B47 R1544 0662057A90 Reference designators with an asterisk indicate...
  • Page 435 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-83 † Low Band R3 PCB 8485908Z04 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola...
  • Page 436 Section 7 : 4-84 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1033 2113740F47 CAP, 68pF C1151...
  • Page 437 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-85 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1468 2113741A45 CAP, .01uF C1614...
  • Page 438 Section 7 : 4-86 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. Q0185 4880048M01 DTC144EKA R0108 0662057A57 RES, 2.2K...
  • Page 439 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-87 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R1115 0662057A75 RES, 12K R1308...
  • Page 440 CRYSTAL, 16.8 MHZ SH1302 2680473U01 VCO SHIELD Y1202 NOTPLACED U0101 5102226J56 MC68HC11FL0 U0111 5102463J64 EEPROM * Motorola Depot Servicing only U0121 5186137B01 FLASH ROM Reference designators with an asterisk indicate U0122 5185748L01 SRAM components which are not field-replaceable U0141 5113805A30...
  • Page 441 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-89 Low Band Range 3 PCB 8485908Z05 Parts Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description List Part No. Part No. Part No. C0262 2113740F49...
  • Page 442 Section 7 : 4-90 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1011 2113740F48 CAP CHIP REEL CL1 +/-30...
  • Page 443 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-91 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1343 2113740F15 CAP CHIP REEL CL1 +/-30...
  • Page 444 Section 7 : 4-92 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1611 2113743E26 CAP CHIP .10 UF 10%...
  • Page 445 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-93 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. L2000 2415429H47 CHIP INDUCTOR Q1306...
  • Page 446 Section 7 : 4-94 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R0642 0660076E75 RES CHIP FILM 7500 1 1/8...
  • Page 447 CHIP RES 1000 OHMS 5% U1051 5108278X01 MIXER MINICIRCUITS ADE- R1605 0662057B10 CHIP RES 330K OHMS 5% * Motorola Depot Servicing only R1606 0662057B02 CHIP RES 150K OHMS 5% U1101 5102463J52 MC74HC4066D QUAD ANA- Reference designators with an asterisk indicate...
  • Page 448 Section 7 : 4-96 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Low Band Range 3 PCB 8485908Z08 Parts Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description List Part No. Part No. Part No. C0293 2314030J26...
  • Page 449 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-97 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C1144 2113945C31 CAP, .1uF C1318 2113945L49 CAP, .01uF...
  • Page 450 Section 7 : 4-98 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. CR1310 4875058M01 DIODE VARACTOR L1102...
  • Page 451 Low Band Range 3 (42–50 MHz) PCBs, Schematics, and Parts Lists Section 7 : 4-99 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. R0223 0613952J12 RES, 30K R0591...
  • Page 452 R1504 0613952J01 RES, 10K R1630 0613952H77 RES, 1500 R1505 0613952H93 RES, 6800 R1631 0613952H31 RES, 18 * Motorola Depot Servicing only R1506 0613952J15 RES, 39K R1632 0613952J10 RES, 24K Reference designators with an asterisk indicate R1507 0613952H73 RES, 1000 R1635...
  • Page 453 Service Information Table of Contents Chapter 1 Model Charts and Technical Specifications 1.0 VHF (136–174 MHz) 25–45 W Bipolar Model Charts........8:1-1 1.1 CDM Series Model Chart ................8:1-1 1.2 PRO Series Model Chart................8:1-2 2.0 Technical Specifications ...................8:1-2 Chapter 2 Theory of Operation 1.0 Introduction .......................8:2-1...
  • Page 454 Chapter 8: ii Chapter 4 VHF (136–174 MHz) 25–45 W Bipolar PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ........... 8:4-1 1.1 Controller Circuits ..................8:4-1 2.0 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists ....................
  • Page 455 Section 8: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS VHF (136–174 MHz) 25–45 W Bipolar Model Charts CDM Series Model Chart CDM Series, VHF (136–174 MHz) 25–45 W Bipolar Model Description AAM25KKC9AA1AN CDM750, 136–174 MHz, 25–45 W, 12.5/20/25 kHz AAM25KKD9AA2AN CDM1250, 136–174 MHz, 25–45 W, 12.5/20/25 kHz...
  • Page 456 Section 8: 1-2 Technical Specifications PRO Series Model Chart PRO Series, VHF (136–174 MHz) 25–45 W Bipolar Model Description LAM25KKC9AA1AN PRO3100, 136–174 MHz, 25–45 W, 12.5/20/25 kHz Ch Sp LAM25KKD9AA2AN PRO5100, 136–174 MHz, 25–45 W, 12.5/20/25 kHz Ch Sp LAM25KKF9AA5AN PRO7100, 136–174 MHz, 25–45 W, 12.5/20/25 kHz Ch Sp Item Description...
  • Page 457 Technical Specifications Section 8: 1-3 Transmitter *Frequencies – Full Bandsplit – Channel Spacing 12.5/20/25 kHz Frequency Stability ±2.0 ppm (-30°C to +60°C, +25° Ref.) Power 25–45 W ±2.5 @ 12.5 kHz Modulation Limiting ±4.0 @ 20 kHz ±5.0 @ 25 kHz -40 dB @ 12.5 kHz FM Hum &...
  • Page 458 Section 8: 1-4 Technical Specifications Notes Section : 6881091C63-F...

  • Page 459: Chapter 2 Theory Of Operation

    Section 8: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the VHF circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of this manual.

  • Page 460: Front-End Bandpass Filters And Pre-Amplifier

    Section 8: 2-2 VHF (136–174 MHz) 25–45 W Bipolar Receiver Front-End There are two 2-pole 44.85 MHz crystal filters in the 1st IF section and 2 pairs of 455 kHz ceramic filters in the 2nd IF section to provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25 kHz channel spacing is selected via control line BWSELECT.

  • Page 461: Vhf (136-174 Mhz) 25-45 W Bipolar Transmitter Power Amplifier

    VHF (136–174 MHz) 25–45 W Bipolar Transmitter Power Amplifier (PA) 45 W Section 8: 2-3 are selectable via BWSELECT. The filtered output from the ceramic filters is applied to the limiter input pin of the IF IC (pin 14). The IF IC contains a quadrature detector using a ceramic phase-shift element (Y3102) to provide audio detection.

  • Page 462: Pre-Driver Stage

    Section 8: 2-4 VHF (136–174 MHz) 25–45 W Bipolar Transmitter Power Amplifier (PA) 45 W simultaneously varies the bias of two FET stages within U3401. This biasing point determines the overall gain of U3401 and therefore its output drive level to Q3421, which in turn controls the output power of the PA.

  • Page 463: Harmonic Filter

    VHF (136–174 MHz) 25–45 W Bipolar Frequency Synthesis Section 8: 2-5 R3474 and the current sink, to ground. Both diodes are forward biased into conduction. The transmitter RF from the directional coupler is routed via D3471 to the harmonic filter and antenna jack.

  • Page 464: Fractional-N Synthesizer

    Section 8: 2-6 VHF (136–174 MHz) 25–45 W Bipolar Frequency Synthesis controlled by the µP via serial interface (SRL) sets the voltage at the warp output of U3201 (pin 25) to set the frequency of the oscillator. The output of the oscillator (U3262 pin 3) is applied to pin 23 (XTAL1) of U3201 via R3263 and C3235.

  • Page 465: Voltage Controlled Oscillator (Vco)

    VHF (136–174 MHz) 25–45 W Bipolar Frequency Synthesis Section 8: 2-7 Output LOCK (U3201-4) provides information about the lock status of the synthesizer loop. A high level at this output indicates a stable loop. IC U3201 provides the 16.8 MHz reference frequency at pin 19.

  • Page 466: Synthesizer Operation

    Section 8: 2-8 VHF (136–174 MHz) 25–45 W Bipolar Frequency Synthesis A steering line voltage (VCTRL) between 2.5 volts and 11 volts at varactor diode D3361 tune the full TX frequency range (TXINJ) from 136 MHz to 174 MHz, and varactor diode D3341 tunes the full RX frequency range (RXINJ) from 181 MHz to 219 MHz.

  • Page 467: Chapter 3 Troubleshooting Charts

    Section 8: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20dB Quieting No Recovered Audio Check Controller Audio at (in the case of no audio) pin 8 of OR ELSE go to “B” U3101? Spray or inject 44.85MHz into XTAL Filter FL3101...

  • Page 468: Troubleshooting Flow Chart For Receiver

    Section 8: 3-2 Troubleshooting Flow Chart for Receiver Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Inject RF into J3401 Trace IF signal from C3035 to Q3101. IF Signal at Check for bad XTAL IF signal at Q3102 C3035? filter collector? Before replacing...

  • Page 469: Troubleshooting Flow Chart For 45 W Transmitter

    Troubleshooting Flow Chart for 45 W Transmitter Section 8: 3-3 Troubleshooting Flow Chart for 45 W Transmitter (Sheet 1 of 2) START No power or low power when keyed Current Check Components between >500mA & <5A >5A increase Q3441 and RF Output, Antenna when keyed? Switch D3471,D3472 <500mA...
  • Page 470 Section 8: 3-4 Troubleshooting Flow Chart for 45 W Transmitter Troubleshooting Flow Chart for 45 W Transmitter (Sheet 2 of 2) Check PA Stages No power or low power when keyed Pin 3 Voltage 0.51 Check Voltage at Pin 2 & 3 of U3401 Replace U3401 * Voltage at Pin 1?

  • Page 471: Troubleshooting Flow Chart For Synthesizer

    Troubleshooting Flow Chart for Synthesizer Section 8: 3-5 Troubleshooting Flow Chart for Synthesizer 5V at Check 5V U3201 pins 5, Start Regulator 20, 34 & 36 U3211, R3211 Visual Correct check of the Problem Board OK? Is 16.8MHz 16.8MHz Replace Signal at signal at U3201...

  • Page 472: Troubleshooting Flow Chart For Vco

    Section 8: 3-6 Troubleshooting Flow Chart for VCO Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP3001 Visual check Visual check Correct of board of board Problem Make sure U3211 is working...
  • Page 473 Section 8: 4-1 Chapter 4 VHF (136–174 MHZ) 25–45 W BIPOLAR PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The VHF circuits are contained on the printed circuit board (PCB) which also contains the controller circuits.
  • Page 474 Section 8: 4-2 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...
  • Page 475 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists Section 8: 4-3 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists R3242 C3240 C0251 R0257 J0451 R3221 R3224 C3210 L3201 C3226 C3231 C0212 R3223 FL3114 Y3102 U0251...
  • Page 476 Section 8: 4-4 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists TP3202 D3261 C3241 C3203 R3201 C0267 TP3201 R3152 R3203 J0401 C3147 C3202 R0267 R3147 R3204 C0265 D3201 C0254 R3261 C0492 C3207 C0202 FL3115 Q3152 C3208 R0206 R0203 C3144...
  • Page 477 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists Section 8: 4-5 L3402 PASUPVLTG_VHF_PA_1 57R01 PASUPVLTG C3436 C3437 C3456 0.1uF C3457 C3405 C3406 10uF 1000pF C3421 L3421 1000pF 1000pF 1000pF .01uF L3431 L3443 57R01 57R01 57R01 L3473 1.2uH 9V3_VHF_PA_1 VCONT...
  • Page 478 Section 8: 4-6 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists VDDA_VHF_FN_1 R3211 VDDA C3214 2.2uF U3211 ADP3300 VDDA 5V_VHF_FN_1 4.97VDC (SOURCE) IN_5V_RF_REG 13.30VDC 5V_VHF_FN_2 IN_5V_RF_REG_VHF_FN_1 C3213 6.83VDC 2.2uF L3201 C3212 C3211 11.28VDC C3215 390nH .022uF 0.1uF 2.2uF C3202...
  • Page 479 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists Section 8: 4-7 WARISMOBILE VHF_VCO Q3303 UMC5N 9V3_VHF_VCO_2 9.14VDC (R) 9V3_VHF_VCO_3 9V3_VHF_VCO_1 0VDC (T) 9.21VDC 3.83VDC (R) VDDA_VHF_VCO_1 4.97VDC 0VDC (T) VDDA VSF_VHF_VCO_1 4.54VDC L3333 7.44VDC (R) R3311 0VDC (T) C3335 .01uF...
  • Page 480 Section 8: 4-8 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists R3026 Q3021 R3027 FECNTL_2_VHF_FE_1 R3006 FECNTL_2 C3029 C3026 330pF 0.1uF R3010 9V3_VHF_FE_1 R3002 R3025 1.5K C3010 9V3_VHF_FE_2 IF_VHF_FE_1 330pF L3031 C3000 C3011 R3011 C3007 3300pF 3300pF 4.7K C3028...
  • Page 481 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists Section 8: 4-9 FL3115 9180469V04 U3111-1 FL3111 FL3113 9180468v04 9180469V03 1 IN 1 IN CNTL CNTL CNTL CNTL R3153 U3111-4 U3115-1 U3115-4 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 R3114 BWSELECT 9V3_VHF_IF_2 U3115-3 U3115-2 R3104...
  • Page 482 Section 8: 4-10 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists † VHF 25–45 W PCB 8486140B12 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola...
  • Page 483 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists Section 8: 4-11 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. D3361 4805649Q13 VCTR 1SV228 SOT23...
  • Page 484 Section 8: 4-12 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B12, Schematics, and Parts Lists * Motorola Depot Servicing only Circuit Motorola Description Reference designators with an asterisk indicate Part No. components which are not field-replaceable R3463 0662057D04 15kK 1/10W 5%...
  • Page 485 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B13, Schematics, and Parts Lists Section 8: 4-13 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B13, Schematics, and Parts Lists R3242 D3221 Q3221 C0251 R0257 J0451 R3221 R3224 C3210 C0211 L3201 C3226 C3231 C0212 C3213 R3223...
  • Page 486 Section 8: 4-14 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B13, Schematics, and Parts Lists C3241 C3146 C3203 R3201 C3152 D3261 C0267 C3263 TP3201 R3152 J0401 C3261 R3203 C3202 R0267 C0492 C3151 R3204 C0265 D3201 U0653 R3261 C0254 C3207 R0266 R3147 FL3115 C0497...
  • Page 487 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B13, Schematics, and Parts Lists Section 8: 4-15 FL3115 CFWC455F 9180469V04 U3111-1 CFUCJ455F CFWC455G U3111-4 U3115-1 U3115-4 FL3113 FL3111 9180468v04 9180469V03 CNTL CNTL CNTL CNTL R3153 Q3151 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 BWSELECT 9V3_VHF_IF_2 R3114 R3104 U3111-3 U3115-2...
  • Page 488 Section 8: 4-16 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B13, Schematics, and Parts Lists † VHF 25–45 W PCB 8486140B13 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola...
  • Page 489 VHF (136–174 MHz) 25–45 W Bipolar PCB 8486140B13, Schematics, and Parts Lists Section 8: 4-17 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C3496 2111078B33 HQ 43pF 5%...
  • Page 490 0662057A15 39 1/16W 5% R3475 0662057A73 10k 1/16W 5% R3343 0662057A25 100 1/16W 5% R3490 0662057A89 47k 1/16W 5% * Motorola Depot Servicing only R3351 0662057A80 20k 1/16W 5% R3501 0662057A69 6800 1/16W 5% R3352 0662057A75 12k 1/16W 5% R3502...
  • Page 491 Table of Contents Chapter 1 Model Charts and Technical Specifications 1.0 UHF Band 1 (403–470 MHz) 25–40 W Bipolar Model Charts ......9:1-1 1.1 CDM Series Model Chart ................9:1-1 1.2 PRO Series Model Chart................9:1-2 2.0 Technical Specifications ...................9:1-2 Chapter 2 Theory of Operation 1.0 Introduction .......................9:2-1...
  • Page 492 Section 9: ii Chapter 4 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ........... 9:4-1 1.1 Controller Circuits ..................9:4-1 2.0 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists ....................
  • Page 493 Section 9: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS UHF Band 1 (403–470 MHz) 25–40 W Bipolar Model Charts CDM Series Model Chart CDM Series, UHF (403–470 MHz) 25–40 W Bipolar (Conventional, LTR/PassPort) Model Description AAM25RKC9AA1AN CDM750, 403–470 MHz, 25–40 W, 12.5/20/25 kHz AAM25RKD9AA2AN CDM1250, 403–470 MHz, 25–40 W, 12.5/20/25 kHz...
  • Page 494 Section 9: 1-2 Technical Specifications PRO Series Model Chart PRO Series, UHF (403–470 MHz) 25–40 W Bipolar Model Description LAM25RKC9AA1AN PRO3100, 403–470 MHz, 25–40 W, 12.5/20/25 kHz Ch Sp LAM25RKD9AA2AN PRO5100, 403–470 MHz, 25–40 W, 12.5/20/25 kHz Ch Sp LAM25RKF9AA5AN PRO7100, 403–470 MHz, 25–40 W, 12.5/20/25 kHz Ch Sp Item Description...
  • Page 495 Technical Specifications Section 9: 1-3 Transmitter UHF 403–470 MHz *Frequencies – Full Bandsplit 12.5/20/25 kHz Channel Spacing Frequency Stability ±2.0 ppm (-30°C to +60°C, +25° Ref.) 25–40 W Power ±2.5 @ 12.5 kHz ±4.0 @ 20 kHz Modulation Limiting ±5.0 @ 25 kHz -40 dB @ 12.5 kHz FM Hum &...
  • Page 496 Section 9: 1-4 Technical Specifications Notes Section : 6881091C63-F...
  • Page 497 Section 9: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the UHF circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of this manual.
  • Page 498 Section 9: 2-2 UHF Band 1 (403–470 MHz) 25–40 W Bipolar Receiver Front-End The 2-pole 44.85 MHz crystal filters in the 1st IF section and two pairs of 455 kHz ceramic filters in the 2nd IF section provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25 kHz channel spacing is selected via control line BWSELECT.
  • Page 499 UHF Band 1 (403–470 MHz) 25–40 W Bipolar Transmitter Power Amplifier (PA) 40W Section 9: 2-3 2nd IF signal is amplified and filtered by an external pair of 455 kHz ceramic filters (FL3112, FL3114) for 20/25 kHz channel spacing or FL3111 and FL3113/F3115 for 12.5 kHz channel spacing. These pairs are selectable via BWSELECT.
  • Page 500 Section 9: 2-4 UHF Band 1 (403–470 MHz) 25–40 W Bipolar Transmitter Power Amplifier (PA) 40W the PCIC pin4(U4501). The control voltage simultaneously varies the bias of two FET stages within U4401. This biasing point determines the overall gain of U4401 and therefore its output drive level to Q4421, which in turn controls the output power of the PA.
  • Page 501 UHF Band 1 (403–470 MHz) 25–40 W Bipolar Frequency Synthesis Section 9: 2-5 Harmonic Filter Inductors L4491, L4492, L4493 and capacitors C4448, C4493,C4494, C4496 and C4498 form a low-pass filter to attenuate harmonic energy from the transmitter. R4491 is used to drain any electrostatic charges that might otherwise build up on the antenna.
  • Page 502 Section 9: 2-6 UHF Band 1 (403–470 MHz) 25–40 W Bipolar Frequency Synthesis In applications where less frequency stability is required the oscillator inside U4201 is used along with an external crystal Y4261, varactor diode D4261, C4261, C4262 and R4262. In this case, Y4262, R4263, C4235 and C4251 are not used.
  • Page 503 UHF Band 1 (403–470 MHz) 25–40 W Bipolar Frequency Synthesis Section 9: 2-7 The serial interface (SRL) is connected to the µP via the data line DATA (U4201-7), clock line CLK (U4201-8), and chip enable line CSX (U4201-9). Voltage Controlled Oscillator (VCO) The Voltage Controlled Oscillator (VCO) consists of the VCO buffer IC (VCOBIC, U4301), the TX and RX tank circuits, the external RX buffer stages, and the modulation circuits.
  • Page 504 Section 9: 2-8 UHF Band 1 (403–470 MHz) 25–40 W Bipolar Frequency Synthesis The external RX buffers (Q4332) are enabled by a high at U4201 pin 3 (AUX4) via transistor switch Q4333. In TX mode the modulation signal (VCOMOD) from the LVFRAC-N synthesizer IC (U4201 pin41) is applied to the modulation circuits CR4321, R4321, R4322 and C4324.
  • Page 505 Section 9: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20dB Quieting No Recovered Audio Check Controller Audio at (in the case of no audio) pin 8 of OR ELSE go to “B” U3101? Spray or inject 44.85MHz into XTAL Filter FL3101...
  • Page 506 Section 9: 3-2 Troubleshooting Flow Chart for Receiver Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Inject RF into J4401 Trace IF signal from C3101 to IF Signal at signal at Q3102 Q3101. Check for C3101? collector? bad XTAL filter. Before replacing U3101, check U3101 voltages.
  • Page 507 Troubleshooting Flow Chart for 40W Transmitter Section 9: 3-3 Troubleshooting Flow Chart for 40W Transmitter START No power Is Vctrl Is Q4573 Check Check there? MOSBIAS_ ASFIC Change Q4573 Check voltage Check on pin 4 U4501 Check PCIC PCIC_MOSBIAS_ Check R4422-5 and go back to top Check voltage Are D4471 &...
  • Page 508 Section 9: 3-4 Troubleshooting Flow Chart for Synthesizer Troubleshooting Flow Chart for Synthesizer Check 5V 5V at U4201 Start Regulator pins 5, 20, 34 U4211 & 36 Visual Check D4201, Correct check of the C4202, C4203, & Problem Board OK? C4206 Is 16.8MHz 16.8MHz...
  • Page 509 Troubleshooting Flow Chart for VCO Section 9: 3-5 Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP4003 Visual check Visual check Correct of board of board Problem Make sure Synthesizer is...
  • Page 510 Section 9: 3-6 Troubleshooting Flow Chart for PassPort Troubleshooting Flow Chart for PassPort Troubleshooting in PassPort mode must be completed in conventional mode. If any issues related to the option board are discovered, the PassPort board should be replaced. Start Check Radio Operation on a Non-PassPort Zone with a Conventional Personality without...
  • Page 511 Section 9: 4-1 Chapter 4 UHF BAND 1 (403–470 MHZ) 25–40 W BIPOLAR PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The UHF circuits are contained on the printed circuit board (PCB) which also contains the controller circuits.
  • Page 512 Section 9: 4-2 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...
  • Page 513 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists Section 9: 4-3 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists J0451 R0257 R4222 R4221 C0251 C4210 C4241 C0256 C4225 C3145 R4223 C4221...
  • Page 514 Section 9: 4-4 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists TP4202 C3146 C3152 C4203 R0208 D4261 R4203 C0267 C0205 C4263 C0255 TP4201 R4201 R0265 J0401 R3146 C3147 R3152 C4202 R0267 R4204 C0492 R0266 R3147 C3151 C4288...
  • Page 515 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists Section 9: 4-5 PASUPVLTG L4402 PASUPVLTG C4478 PASUPVLTG_UHF_PA_1 C4495 57R01 C4484 C4490 1000pF C4493 1000pF C4482 C4436 C4438 30pF C4497 30pF 0.1uF C4481 C4421 10uF C4485 C4602 C4632 C4489...
  • Page 516 Section 9: 4-6 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists C4212 .018uF U4211 LP2951 5V_UHF_FN_1 5V_UHF_FN_2 IN_5V_RF_REG_UHF_FN_1 4.97 VDC INPUT OUTPUT IN_5V_RF_REG FEEDBACK ERROR 6.68 VDC SHUTDOWN SENSE C4216 C4213 10.87 VDC C4211 C4215 2.2uF 5V_TAP...
  • Page 517 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists Section 9: 4-7 Q4333 0 VDC (Tx) VCOBIAS_2_UHF_VCO 2.43 VDC (Rx) R4346 VCOBIAS_2 0 VDC (Tx) C4375 4.7 VDC (Rx) 0.1uF R4301 VSF_UHF_VC0 R4341 4.58 VDC 5V_UHF_VCO RXSW 5.6K...
  • Page 518 Section 9: 4-8 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists R4071 Q4004 R4072 FECTRL_2_UHF_FE R4061 FECTRL_2 C4062 C4061 0.1uF 330pF 9V3_UHF_FE R4002 R4062 1.5K C4069 R4070 C4012 .01uF 330pF C4013 C4010 C4011 3300pF 330pF R4016 C4064...
  • Page 519 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists Section 9: 4-9 FL3115 CFWC455F 9180469V04 U3111-1 CFWC455G CFUCJ455F U3111-4 U3115-1 U3115-4 FL3113 FL3111 9180468v04 9180469V03 CNTL CNTL CNTL CNTL R3153 Q3151 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 BWSELECT 9V3_VHF_IF_2 R3114 R3104...
  • Page 520 Section 9: 4-10 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists † UHF B1 25–40 W PCB 8480643Z06 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No.
  • Page 521 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists Section 9: 4-11 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C4053 2113740F32 16pF...
  • Page 522 Section 9: 4-12 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. L4303 2460593C01 RESONATOR...
  • Page 523 TCXO 16.8MHZ R4005 0662057A73 R4347 0662057B47 SH4302 2602641Y02 SHIELD R4007 0662057A18 R4361 0662057A31 T4051 2505515V03 TRANSFORMER 4:1 * Motorola Depot Servicing only R4012 0662057A97 100K R4401 0662057A36 T4052 2505515V04 TRANSFORMER 5:1 Reference designators with an asterisk indicate R4013 0662057A35 R4402 0662057A05...
  • Page 524 Section 9: 4-14 UHF Band 1 (403–470 MHz) 25–40 W Bipolar PCB 8480643Z06, Schematics, and Parts Lists Notes 6881091C63-F...
  • Page 525 Table of Contents Chapter 1 Model Charts and Technical Specifications 1.0 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Model Charts ....10:1-1 1.1 CDM Series Model Chart ................10:1-1 1.2 PRO Series Model Chart................10:1-2 2.0 Technical Specifications .................10:1-2 Chapter 2 Theory of Operation 1.0 Introduction .....................10:2-1...
  • Page 526 Section 10: ii Chapter 4 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ..........10:4-1 1.1 Controller Circuits ..................10:4-1 2.0 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists................

  • Page 527: Model Charts And Technical Specifications

    Section 10: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Model Charts CDM Series Model Chart CDM Series, UHF (450–512 MHz) 25–40 W Bipolar (Conventional, LTR/PassPort) Model Description AAM25SKC9AA1AN CDM750, 450–512 MHz, 25–40 W, 12.5/20/25 kHz AAM25SKD9AA2AN CDM1250, 450–512 MHz, 25–40 W, 12.5/20/25 kHz...

  • Page 528: Pro Series Model Chart

    Section 10: 1-2 Technical Specifications PRO Series Model Chart PRO Series, UHF (450–520 MHz) 25–40 W Bipolar Model Description LAM25SKC9AA1AN PRO3100, 450–520 MHz, 25–40 W, 12.5/20/25 kHz Ch Sp LAM25SKD9AA2AN PRO5100, 450–520 MHz, 25–40 W, 12.5/20/25 kHz Ch Sp LAM25SKF9AA5AN PRO7100, 450–520 MHz, 25–40 W, 12.5/20/25 kHz Ch Sp Item Description...
  • Page 529 Technical Specifications Section 10: 1-3 Transmitter UHF 450–512 MHz (CDM) *Frequencies – Full Bandsplit UHF 450–520 MHz (PRO) Channel Spacing 12.5/20/25 kHz Frequency Stability ±2.0 ppm (-30°C to +60°C, +25° Ref.) Power 25–40 W ±2.5 @ 12.5 kHz Modulation Limiting ±4.0 @ 20 kHz ±5.0 @ 25 kHz -40 dB @ 12.5 kHz...
  • Page 530 Section 10: 1-4 Technical Specifications Notes Section : 6881091C63-F...

  • Page 531: Theory Of Operation

    Section 10: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the UHF circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of this manual.

  • Page 532: Front-End Bandpass Filters And Pre-Amplifier

    Section 10: 2-2 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Receiver Front-End The two 2-pole 44.85 MHz crystal filters in the high-IF section and two pairs of 455 kHz ceramic filters in the low-IF section provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25 kHz channel spacing is selected via control line BWSELECT.
  • Page 533 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Transmitter Power Amplifier (PA) 40W Section 10: 2-3 pairs are selectable via BWSELECT. The filtered output from the ceramic filters is applied to the limiter input pin of the IF IC (pin 14). The IF IC contains a quadrature detector using a ceramic phase-shift element (Y3102) to provide audio detection.

  • Page 534: Pre-Driver Stage

    Section 10: 2-4 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Transmitter Power Amplifier (PA) 40W In receive mode, the voltage control line is at ground level and turns off Q5473, which in turn switches off the biasing voltage to U5401. Pre-Driver Stage The next stage is a 13dB gain LDMOS device (Q5421) which requires a positive gate bias and a quiescent current flow for proper operation.

  • Page 535: Power Control

    UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Frequency Synthesis Section 10: 2-5 Harmonic Filter Inductors L5491, L5492, and L4493 along with capacitors C5448, C5493, C5494, C5496, and C5498 form a low-pass filter to attenuate harmonic energy from the transmitter. Resistor R5491 drains any electrostatic charges that might otherwise build up on the antenna.

  • Page 536: Reference Oscillator

    Section 10: 2-6 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Frequency Synthesis In applications where less frequency stability is required, the oscillator inside U5201 is used along with external crystal Y5261, varactor diode D5261, C5261, C5262, and R5262. In this case, Y5262, R5263, C5235 and C5251 are not used.

  • Page 537: Voltage Controlled Oscillator (Vco)

    UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Frequency Synthesis Section 10: 2-7 The serial interface (SRL) is connected to the µP via data line DATA (U5201-7), clock line CLK (U5201-8), and chip enable line CSX (U5201-9). Voltage Controlled Oscillator (VCO) The voltage controlled oscillator (VCO), shown in Figure 10-4, consists of a VCO buffer IC (VCOBIC, U5301), TX and RX tank circuits, external RX buffer stages, and modulation circuits.

  • Page 538: Synthesizer Operation

    Section 10: 2-8 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar Frequency Synthesis The external RX buffers (Q5332) are enabled by a high at U5201, pin 3 (AUX4) via transistor switch Q5333. In TX mode, the modulation signal (VCOMOD) from the LVFRAC-N synthesizer IC (U5201, pin 41) is applied to the modulation circuits CR5321, R5321, R5322, and C5324.

  • Page 539: Troubleshooting Charts

    Section 10: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20dB Quieting No Recovered Audio Check Controller Audio at (in the case of no audio) pin 8 of OR ELSE go to “B” U3101? Spray or inject 44.85MHz into XTAL Filter FL3101...

  • Page 540: Troubleshooting Flow Chart For Receiver

    Section 10: 3-2 Troubleshooting Flow Chart for Receiver Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Inject RF into J5401 Trace IF signal from C3101 to IF Signal at signal at Q3102 Q3101. Check for C3101? collector? bad XTAL filter. Before replacing U3101, check U3101 voltages.

  • Page 541: Troubleshooting Flow Chart For 40W Transmitter

    Troubleshooting Flow Chart for 40 W Transmitter Section 10: 3-3 Troubleshooting Flow Chart for 40 W Transmitter START No power Is Vctrl Check Is Q5573 Check there? MOSBIAS_2 ASFIC Change Q4573 Check voltage Check Check on U5501, pin 4 PCIC_MOSBIAS_1 PCIC Check R5422-5 and go back to top...

  • Page 542: Troubleshooting Flow Chart For Synthesizer

    Section 10: 3-4 Troubleshooting Flow Chart for Synthesizer Troubleshooting Flow Chart for Synthesizer Start Check 5V at U5201 Regulator pins 5, 20, 34 U5211 & 36 Visual Correct check of the Problem Board Check D5201, C5202, C5203, & C5206 16.8MHz 16.8MHz Replace signal at...

  • Page 543: Troubleshooting Flow Chart For Vco

    Troubleshooting Flow Chart for VCO Section 10: 3-5 Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP5003 Visual check Visual check Correct of board of board Problem Make sure Synthesizer is...

  • Page 544: Troubleshooting Flow Chart For Passport

    Section 10: 3-6 Troubleshooting Flow Chart for PassPort Troubleshooting Flow Chart for PassPort Troubleshooting in PassPort mode must be completed in conventional mode. If any issues related to the option board are discovered, the PassPort board should be replaced. Start Check Radio Operation on a Non-PassPort Zone with a Conventional Personality without...
  • Page 545 Section 10: 4-1 Chapter 4 UHF BAND 2 (450–512/520 MHZ) 25–40 W BIPOLAR PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The UHF circuits are contained on the printed circuit board (PCB) which also contains the controller circuits.
  • Page 546 Section 10: 4-2 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...
  • Page 547 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists Section 10: 4-3 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists R5221 R0257 J0451 C0251 C5241 C0212 C5213 R5223 FL3114 Y3102 U3115 U0251...
  • Page 548 Section 10: 4-4 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists TP5202 C5203 D5261 R5203 J0401 TP5201 C0267 R3152 C0492 R0267 C5202 C0265 R5204 D5201 R5261 R3147 C0254 C0202 Q3152 C5288 R0203 C0497 R0206 U0652 C3144 C5204...
  • Page 549 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists Section 10: 4-5 PASUPVLTG L5402 PASUPVLTG_UHF_PA_1 PASUPVLTG C5632 1000pF C5485 30pF C5481 C5484 C5421 C5495 C5489 C5497 C5493 C5478 C5602 C5436 820K .033uF 3000pF 30pF 1000pF 3000pF 1000pF 3000pF...
  • Page 550 Section 10: 4-6 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists C5212 .018uF U5211 LP2951 5V_UHF_FN_1 5V_UHF_FN_2 IN_5V_RF_REG_UHF_FN_1 4.97 VDC OUTPUT INPUT IN_5V_RF_REG ERROR FEEDBACK 6.6 VDC SENSE C5213 SHUTDOWN C5215 C5216 10.87 VDC C5211 5V_TAP L5201...
  • Page 551 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists Section 10: 4-7 Q5333 VCOBIAS_2_UHF_VCO R5346 VCOBIAS_2 4.5 VDc (Rx) 4.2 VDC (Rx) C5375 0 VDc (Tx) 0 VDC (Tx) VSF_UHF_VC0 R5301 R5341 5V_UHF_VCO 4.5 VDC RXSW 5.6K C5353...
  • Page 552 Section 10: 4-8 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists R5071 FECTRL_2_UHF_FE R5072 R5061 FECTRL_2 C5062 C5061 Q5004 R5002 9V3_UHF_FE R5062 C5069 R5070 C5011 C5012 C5013 C5010 3300pF 330pF 3300pF 330pF C5064 R5016 3.3K D5007 L5003...
  • Page 553 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists Section 10: 4-9 FL3115 CFWC455F 9180469V04 U3111-1 CFWC455G CFUCJ455F U3111-4 U3115-1 U3115-4 FL3113 FL3111 9180468v04 9180469V03 CNTL CNTL CNTL CNTL R3153 Q3151 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 BWSELECT 9V3_VHF_IF_2 R3114 R3104...
  • Page 554 Section 10: 4-10 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists † UHF B2 25–40 W PCB 8480645Z04 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No.
  • Page 555 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists Section 10: 4-11 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C5052 2113740F49 82pF...
  • Page 556 Section 10: 4-12 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. L5008 2462587T23 470nH...
  • Page 557 TCXO 16.8MHZ R5004 0662057A59 2.7K R5346 0662057A73 SH5301 2602641Y02 SHIELD R5005 0662057A73 R5347 0662057B47 SH5302 2602641Y02 SHIELD * Motorola Depot Servicing only R5007 0662057A21 R5361 0662057A31 T5051 2505515V03 TRANSFORMER 4:1 Reference designators with an asterisk indicate R5012 0662057A97 R5401 0662057A36 T5052...
  • Page 558 Section 10: 4-14 UHF Band 2 (450–512/520 MHz) 25–40 W Bipolar PCB 8480645Z04, Schematics, and Parts Lists Notes 6881091C63-F...
  • Page 559 Table of Contents Chapter 1 Model Charts and Technical Specifications 1.0 VHF (136–174 MHz) 25–45 W LDMOS Model Charts ........11:1-1 1.1 CDM Series Model Chart ................11:1-1 1.2 PRO Series Model Chart................11:1-2 2.0 Technical Specifications .................11:1-2 Chapter 2 Theory of Operation 1.0 Introduction .....................11:2-1...
  • Page 560 Section 11: ii Chapter 4 VHF (136–174 MHz) 25–45 W LDMOS PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ..........11:4-1 1.1 Controller Circuits ..................11:4-1 2.0 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists11:4-3 4.0 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists11:4-13...

  • Page 561: Model Charts And Technical Specifications

    Section 11: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS VHF (136–174 MHz) 25–45 W LDMOS Model Charts CDM Series Model Chart CDM Series, VHF (136–174 MHz) 25–45 W LDMOS Model Description AAM25KKC9AA1AN CDM750, 136–174 MHz, 25–45 W Conv Pref (LDMOS) AAM25KKD9AA2AN CDM1250, 136–174 MHz, 25–45 W Conv Pref (LDMOS)

  • Page 562: Pro Series Model Chart

    Section 11: 1-2 Technical Specifications PRO Series Model Chart PRO Series, VHF (136–174 MHz) 25–45 W LDMOS Model Description LAM25KKC9AA1AN PRO3100, 136–174 MHz, 25–45 W, 12.5/20/25 kHz Ch Sp, Conv Pref (LDMOS) LAM25KKD9AA2AN PRO5100, 136–174 MHz, 25–45 W, 12.5/20/25 kHz Ch Sp, Conv Pref (LDMOS) LAM25KKF9AA5AN PRO7100, 136–174 MHz, 25–45 W, 12.5/20/25 kHz Ch Sp, Conv Pref (LDMOS) Item...
  • Page 563 Technical Specifications Section 11: 1-3 Transmitter *Frequencies – Full Bandsplit VHF 136–174 MHz Channel Spacing 12.5/20/25 kHz Frequency Stability ±2.0 ppm (-30°C to +60°C, +25° Ref.) Power 25–45 W Modulation Limiting ±2.5 @ 12.5 kHz ±4.0 @ 20 kHz ±5.0 @ 25 kHz FM Hum &...
  • Page 564 Section 11: 1-4 Technical Specifications Notes 6881091C63-F...

  • Page 565: Theory Of Operation

    Section 11: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the VHF circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of this manual.

  • Page 566: Front-End Bandpass Filters And Pre-Amplifier

    Section 11: 2-2 VHF (136–174 MHz) 25–45 W LDMOS Receiver Front-End There are two 2-pole 44.85 MHz crystal filters in the 1st IF section and 2 pairs of 455 kHz ceramic filters in the 2nd IF section to provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25kHz channel spacing is selected via control line BWSELECT.

  • Page 567: Power Controlled Stage

    VHF (136–174 MHz) 25–45W LDMOS Transmitter Power Amplifier (PA) 45 W Section 11: 2-3 The IF IC contains a quadrature detector using a ceramic phase-shift element (Y3102) to provide audio detection. Internal amplification provides an audio output level of 120 mV rms (at 60% deviation) from U3101 pin 8 (DISCAUDIO) which is fed to the ASFIC_CMP (U0221) pin 2 (part of the Controller circuits).

  • Page 568: Driver Stage

    Section 11: 2-4 VHF (136–174 MHz) 25–45W LDMOS Transmitter Power Amplifier (PA) 45 W output causes the DC voltage from the PCIC to fall, and U3402-1 adjusts the bias voltage for a lower drain current to lower the gain of the stage. In receive mode the DC voltage from PCIC pin 23 (RX) turns on Q3442, which in turn switches off the biasing voltage to U3401.

  • Page 569: Harmonic Filter

    VHF (136–174 MHz) 25–45 W LDMOS Frequency Synthesis Section 11: 2-5 Harmonic Filter Components L3512 – L3515 and C3564 – C3568 form a nine-pole Chebychev low-pass filter and attenuate harmonic energy of the transmitter. R3545 is used to drain electrostatic charge that might otherwise build up on the antenna.

  • Page 570: Reference Oscillator

    Section 11: 2-6 VHF (136–174 MHz) 25–45 W LDMOS Frequency Synthesis Reference Oscillator The reference oscillator (Y3262) contains a temperature compensated crystal oscillator with a frequency of 16.8 MHz. An analog-to-digital (A/D) converter internal to U3201 (LVFRAC-N) and controlled by the µP via serial interface (SRL) sets the voltage at the warp output of U3201 (pin 25) to set the frequency of the oscillator.

  • Page 571: Voltage Controlled Oscillator (Vco)

    VHF (136–174 MHz) 25–45 W LDMOS Frequency Synthesis Section 11: 2-7 In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin VCP (U3201-47), a voltage of 13 VDC is being generated by the positive voltage multiplier circuits (D3201, C3202, C3203).

  • Page 572: Synthesizer Operation

    Section 11: 2-8 VHF (136–174 MHz) 25–45 W LDMOS Frequency Synthesis RF output is routed from U3301, pin 12 (PRESC_OUT), via a low-pass filter, to U3201, pin 32 (PREIN). A steering line voltage (VCTRL) between 2.5 volts and 11 volts at varactor diode D3361 tune the full TX frequency range (TXINJ) from 136 MHz to 174 MHz, and varactor diode D3341 tunes the full RX frequency range (RXINJ) from 181 MHz to 219 MHz.

  • Page 573: Troubleshooting Charts

    Section 11: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20dB Quieting No Recovered Audio Check Controller Audio at (in the case of no audio) pin 8 of OR ELSE go to “B” U3101? Spray or inject 44.85MHz into XTAL Filter FL3101...
  • Page 574 Section 11: 3-2 Troubleshooting Flow Chart for Receiver Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Inject RF into J3401 Trace IF signal from C3035 to Q3101. IF Signal at Check for bad XTAL IF signal at Q3102 C3035? filter collector? Before replacing...
  • Page 575 Troubleshooting Flow Chart for 45 W Transmitter Section 11: 3-3 Troubleshooting Flow Chart for 45 W Transmitter (Sheet 1 of 3) START No power or low power when keyed Check if pressure pad closes S3440 Check components be- Measure tween Q3441 and RF supply >4A >500mA &...
  • Page 576 Section 11: 3-4 Troubleshooting Flow Chart for 45 W Transmitter Troubleshooting Flow Chart for 45 W Transmitter (Sheet 2 of 3) Check PA stages No power or low power when keyed DC voltage If U3201 pin 2 is high, at U3501 replace PCIC pin 23 =0? Check resistive...
  • Page 577 Troubleshooting Flow Chart for 45 W Transmitter Section 11: 3-5 Troubleshooting Flow Chart for 45 W Transmitter (Sheet 3 of 3) Check final PA stage Supply Voltage Bias 2 DC voltage at Replace Q3441 TP3406? 1-4V Check components ASFIC RF voltage between ASFIC and U0221 pin 6 Check FGU (U3301)

  • Page 578: Troubleshooting Flow Chart For Synthesizer

    Section 11: 3-6 Troubleshooting Flow Chart for Synthesizer Troubleshooting Flow Chart for Synthesizer 5V at Check 5V U3201 pins 5, Start Regulator 20, 34 & 36 U3211, R3211 Visual Correct check of the Problem Board OK? Is 16.8MHz 16.8MHz Replace Signal at signal at U3201...

  • Page 579: Troubleshooting Flow Chart For Vco

    Troubleshooting Flow Chart for VCO Section 11: 3-7 Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP3001 Visual check Visual check Correct of board of board Problem Make sure U3211 is working...
  • Page 580 Section 11: 3-8 Troubleshooting Flow Chart for VCO Notes 6881091C63-F...
  • Page 581 Section 11: 4-1 Chapter 4 VHF (136–174 MHZ) 25–45 W LDMOS PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The VHF circuits are contained on the printed circuit board (PCB) which also contains the controller circuits.
  • Page 582 Section 11: 4-2 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...
  • Page 583 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists Section 11: 4-3 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists J0451 C3240 C0251 R0257 R3221 C0256 C3222 C3221 C3210 R3224 L3201 R3242 R3222 C0211 C3226 C3231...
  • Page 584 Section 11: 4-4 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists TP3202 C3241 C3152 R3201 C3146 D3261 C3203 J0401 C3263 C0255 TP3201 C0267 C3147 R3152 R3146 R3203 R3261 C0492 R0267 C3151 C0265 R3204 D3201 C0254 R0468 R3147 R0266 FL3115...
  • Page 585 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists Section 11: 4-5 L3402 R3510 57R01 PASUPVLTG_VHF_PA_1 FSWB FSWB2 C3544 C3546 R3515 C3545 R3511 0.1uF .01uF PASUPVLTG 100K L3436 U3503-1 57R01 C3436 C3437 FSWB2 10uF .033uF C3405 C3406 470pF 470pF Q1503...
  • Page 586 Section 11: 4-6 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists Karl-Ludwig Fa R3211 VDDA_VHF_FN_1 VDDA C3214 2.2uF U3211 VDDA ADP3300 5V_VHF_FN_1 5V_VHF_FN_2 IN_5V_RF_REG_VHF_FN_1 C3212 4.97VDC IN_5V_RF_REG (SOURCE) 13.30VDC Hans-Peter Gaert 6.83VDC .022uF C3213 C3211 C3215 11.28VDC L3201 2.2uF...
  • Page 587 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists Section 11: 4-7 Q3303 UMC5N 9.14VDC (R) 9V3_VHF_VCO_3 9V3_VHF_VCO_2 9V3_VHF_VCO_1 0VDC (T) 9.21VDC VDDA_VHF_VCO_1 3.83VDC (R) 4.97VDC VDDA 0VDC (T) VSF_VHF_VCO_1 4.54VDC L3333 7.44VDC (R) 0VDC (T) R3311 C3335 .01uF R3331...
  • Page 588 Section 11: 4-8 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists R3026 Q3021 R3027 FECNTL_2_VHF_FE_1 R3006 FECNTL_2 C3029 C3026 330pF 0.1uF R3010 R3025 9V3_VHF_FE_1 R3002 1.5K 9V3_VHF_FE_2 L3031 C3000 R3011 C3007 C3010 C3011 C3028 3300pF 3300pF 3300pF 4.7K 330pF...
  • Page 589 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists Section 11: 4-9 FL3115 CFWC455F 9180469V04 OUT 2 U3111-1 U3111-4 U3115-1 U3115-4 FL3113 FL3111 9180468v04 9180469V03 CFWC455G CFUCJ455F 1 IN 1 IN CNTL CNTL CNTL CNTL R3153 MC74HC4066 MC74HC4066 MC74HC4066 MC74HC4066...
  • Page 590 Section 11: 4-10 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists † VHF 25–45 W PCB 8486140B15 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No. Circuit Motorola...
  • Page 591 VHF (136–174 MHz) 25–45 W LDMOS PCB 8486140B15, Schematics, and Parts Lists Section 11: 4-11 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. D3402 4813833C02 DUAL 70V '5B' COMM CATH...
  • Page 592 0680194M18 51 OHMS 5% 1W R3474 0680194M18 51 OHMS 5% 1W R3475 0662057A73 10K OHMS 5% * Motorola Depot Servicing only R3501 0662057A69 6800 OHM 5 1/8W Reference designators with an asterisk indicate R3502 0662057A87 39K OHMS 5% components which are not field-replaceable...
  • Page 593 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists Section 11: 4-13 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists R3242 J0451 C0251 R0257 R3221 C3210 R3224 L3232 C3226 C0212 C3213 R3223 FL3114 Y3102 C3255 C3227...
  • Page 594 Section 11: 4-14 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists Q1503 L3402 E0631 R3564 S3440 R3429 R3417 C3427 VR0601 R3422 U3402 R3428 R3441 C3440 R3445 R3443 R3442 VR0509 C3546 VR0504 R3412 L3436 C3415 C3413 R3444 C3414 C3416 R0531...
  • Page 595 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists Section 11: 4-15 PASUPVLTG_VHF_PA_1 FSWB2 C3544 C3545 C3546 FSWB 0.1uF .01uF R3515 R3510 PASUPVLTG L3402 100K R3511 57R01 R3407 C3437 L3436 FSWB2 .033uF 57R01 C3405 C3406 R3518 L3437 470pF 470pF 17nH...
  • Page 596 Section 11: 4-16 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists VDDA_VHF_FN_1 VDDA R3211 C3214 2.2uF U3211 VDDA ADP3300 5V_VHF_FN_1 5V_VHF_FN_2 IN_5V_RF_REG_VHF_FN_1 4.97VDC IN_5V_RF_REG (SOURCE) 13.30VDC 6.83VDC C3212 C3213 .022uF 11.28VDC L3201 2.2uF C3211 C3215 390nH 0.1uF 2.2uF C3202...
  • Page 597 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists Section 11: 4-17 9.14VDC (R) UMC5N 9V3_VHF_VCO_3 9V3_VHF_VCO_2 9V3_VHF_VCO_1 0VDC (T) 9.21VDC Q3303 VDDA_VHF_VCO_1 3.83VDC (R) 4.97VDC VDDA 0VDC (T) VSF_VHF_VCO_1 4.54VDC NC_Q3303_5 L3333 7.44VDC (R) 0VDC (T) C3335 R3335 R3311...
  • Page 598 Section 11: 4-18 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists R3026 Q3021 R3027 FECNTL_2_VHF_FE_1 FECNTL_2 R3006 C3029 C3026 330pF 0.1uF R3010 9V3_VHF_FE_1 R3025 1.5K 9V3_VHF_FE_2 R3002 C3000 C3011 3300pF C3010 3300pF C3007 330pF L3031 3300pF IF_VHF_FE_1 C3028 C3027...
  • Page 599 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists Section 11: 4-19 FL3115 CFWC455F 9180469V04 OUT 2 MC74HC4066 MC74HC4066 MC74HC4066 FL3111 FL3113 CFWC455G CFUCJ455F 9180469V03 9180468v04 1 IN 1 IN CNTL CNTL CNTL CNTL R3153 U3115-4 U3111-1 U3111-4 U3115-1 MC74HC4066...
  • Page 600 Section 11: 4-20 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists VHF PCB 8471234L02 Parts List Circuit Motorola Part Circuit Motorola Part Circuit Motorola Part Description Description Description Circuit Motorola Part Description C3124 2113944M30 CAP 33 PF...
  • Page 601 VHF (136–174 MHz) 25–45 W LDMOS PCB 8471234L02, Schematics, and Parts Lists Section 11: 4-21 Circuit Motorola Part Circuit Motorola Part Circuit Motorola Part Circuit Motorola Part Description Description Description Description C3512 2113945L25 CAP 1000 PF FL3101 9180112R16 44.85 MHZ XTAL FILTER...
  • Page 602 RES 3600 OHM Y3263 4816142H01 XTAL OSC 16.8 MHZ R3407 0613958H18 RES 5.1 OHM R3518 0671463L01 RES 0.01 OHM * Motorola Depot Servicing only R3408 0613952J17 RES 47K OHM R3525 0613958H11 RES 2.7 OHM Reference designators with an asterisk indicate R3411 0613952H70...
  • Page 603 Table of Contents Chapter 1 Model Charts and Technical Specifications 1.0 UHF Band 1 (403–470 MHz) 25–40 W LDMOS Model Charts.......12:1-1 1.1 CDM Series Model Chart ................12:1-1 1.2 PRO Series Model Chart................12:1-2 2.0 Technical Specifications .................12:1-2 Chapter 2 Theory of Operation 1.0 Introduction .....................12:2-1...
  • Page 604 Section 12: ii Chapter 4 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ..........12:4-1 1.1 Controller Circuits ..................12:4-1 2.0 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists................

  • Page 605: Model Charts And Technical Specifications

    Section 12: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS UHF Band 1 (403–470 MHz) 25–40 W LDMOS Model Charts CDM Series Model Chart CDM Series, UHF (403–470 MHz) 25–40 W LDMOS (Conventional, LTR/PassPort) Model Description AAM25RKC9AA1AN CDM750, 403–470 MHz, 25–40 W, Conv Pref (LDMOS) AAM25RKD9AA2AN CDM1250, 403–470 MHz, 25–40 W, Conv Pref (LDMOS)

  • Page 606: Pro Series Model Chart

    Section 12: 1-2 Technical Specifications PRO Series Model Chart PRO Series, UHF (403–470 MHz) 25–40 W LDMOS Model Description LAM25RKC9AA1AN PRO3100, 403–470 MHz, 25–40 W, 12.5/20/25 kHz Ch Sp, Conv Pref (LDMOS) LAM25RKD9AA2AN PRO5100, 403–470 MHz, 25–40 W, 12.5/20/25 kHz Ch Sp, Conv Pref (LDMOS) LAM25RKF9AA5AN PRO7100, 403–470 MHz, 25–40 W, 12.5/20/25 kHz Ch Sp, Conv Pref (LDMOS) Item Description...
  • Page 607 Technical Specifications Section 12: 1-3 Transmitter *Frequencies – Full Bandsplit UHF 403–470 MHz Channel Spacing 12.5/20/25 kHz Frequency Stability ±2.0 ppm (-30°C to +60°C, +25° Ref.) Power 25–40 W ±2.5 @ 12.5 kHz Modulation Limiting ±4.0 @ 20 kHz ±5.0 @ 25 kHz -40 dB @ 12.5 kHz FM Hum &...
  • Page 608 Section 12: 1-4 Technical Specifications Notes 6881091C63-F...

  • Page 609: Theory Of Operation

    Section 12: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the UHF circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of this manual.

  • Page 610: Front-End Bandpass Filters And Pre-Amplifier

    Section 12: 2-2 UHF Band 1 (403–470 MHz) 25–40 W LDMOS Receiver Front-End There are two 2-pole 44.85 MHz crystal filters in the high-IF section and 2 pairs of 455 kHz ceramic filters in the low-IF section to provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25 kHz channel spacing is selected via control line BWSELECT.

  • Page 611: Low Intermediate Frequency (If) And Receiver Back-End

    UHF Band 1 (403–470 MHz) 25–40 W LDMOS Transmitter Power Amplifier (PA) 40W Section 12: 2-3 Low Intermediate Frequency (IF) and Receiver Back-End The 44.85 high IF signal from the second IF amplifier feeds the IF IC (U3101) at pin1. Within the IF IC the 44.85 MHz high IF signal mixes with the 44.395 MHz second local oscillator (2nd LO) to produce the low IF signal at 455 kHz.

  • Page 612: First Power Controlled Stage

    Section 12: 2-4 UHF Band 1 (403–470 MHz) 25–40 W LDMOS Transmitter Power Amplifier (PA) 40W First Power Controlled Stage The first stage (U4401) is a 20dB gain integrated circuit containing two LDMOS FET amplifier stages. It amplifies the RF signal from the VCO (TXINJ). The output power of stage U4401 is controlled by a DC voltage applied to pin 1 from Q4473.

  • Page 613: Harmonic Filter

    UHF Band 1 (403–470 MHz) 25–40 W LDMOS Frequency Synthesis Section 12: 2-5 DC path from PASUPVLTG, through L4437, D4471, L4472, D4472, L4473, R4496 and the current sink, to ground. Both diodes are forward biased into conduction. The transmitter RF from the directional coupler is routed via D4471 to the harmonic filter and antenna jack.

  • Page 614: Reference Oscillator

    Section 12: 2-6 UHF Band 1 (403–470 MHz) 25–40 W LDMOS Frequency Synthesis Reference Oscillator The reference oscillator (Y4262) contains a temperature compensated crystal oscillator with a frequency of 16.8 MHz. An analog-to-digital (A/D) converter internal to U4201 (LVFRAC-N) and controlled by the µP via serial interface (SRL) sets the voltage at the warp output of U4201 pin 25 to set the frequency of the oscillator.

  • Page 615: Voltage Controlled Oscillator (Vco)

    UHF Band 1 (403–470 MHz) 25–40 W LDMOS Frequency Synthesis Section 12: 2-7 In order to generate a high voltage to supply the phase detector (charge pump) output stage at pin 47 VCP (U4201-47), a voltage of 13 VDC is being generated by the positive voltage multiplier circuitry (D4201, C4202, C4203).

  • Page 616: Synthesizer Operation

    Section 12: 2-8 UHF Band 1 (403–470 MHz) 25–40 W LDMOS Frequency Synthesis a low enables RX tank and RX output (pin 8). A sample of the signal from the enabled output is routed from U4301 pin 12 (PRESC_OUT), via a low-pass filter, to pin 32 of U4201 (PREIN). A steering line voltage (VCTRL) between 3.0V and 10.0V at varactor diode CR4311 will tune the full TX frequency range (TXINJ) from 403 MHz to 470 MHz, and at varactor diodes CR4301, CR4302 and CR4303 will tune the full RX frequency range (RXINJ) from 358 MHz to 425 MHz.

  • Page 617: Troubleshooting Charts

    Section 12: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20dB Quieting No Recovered Audio Check Controller Audio at (in the case of no audio) pin 8 of OR ELSE go to “B” U3101? Spray or inject 44.85MHz into XTAL Filter FL3101...
  • Page 618 Section 12: 3-2 Troubleshooting Flow Chart for Receiver Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Inject RF into J4401 Trace IF signal from C3101 to IF Signal at signal at Q3102 Q3101. Check for C3101? collector? bad XTAL filter. Before replacing U3101, check U3101 voltages.
  • Page 619 Troubleshooting Flow Chart for 40 W Transmitter Section 12: 3-3 Troubleshooting Flow Chart for 40 W Transmitter (Sheet 1 of 2) START No power or low power when keyed Check if Pressure Pad closes S5440 Put in pressure pad Check Components between Current Q4441 and RF Output, >500mA &...
  • Page 620 Section 12: 3-4 Troubleshooting Flow Chart for 40 W Transmitter Troubleshooting Flow Chart for 40 W Transmitter (Sheet 2 of 2) Check PA Stages Check Check MOSBIAS_2/ ASFIC MOSBIAS_3 Check Check PCIC_MOS PCIC BIAS_1 Change D4471 & Are D4471 & D4472 D4472 OK? Change...

  • Page 621: Troubleshooting Flow Chart For Synthesizer

    Troubleshooting Flow Chart for Synthesizer Section 12: 3-5 Troubleshooting Flow Chart for Synthesizer Start Check 5V at U4201 Regulator pins 5, 20, 34 U4211 & 36 Visual Correct check of the Problem Board Check D4201, C4202, C4203, & C4206 16.8MHz 16.8MHz Replace signal at...

  • Page 622: Troubleshooting Flow Chart For Vco

    Section 12: 3-6 Troubleshooting Flow Chart for VCO Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP4003 Visual check Visual check Correct of board of board Problem Make sure Synthesizer is...

  • Page 623: Troubleshooting Flow Chart For Passport

    Troubleshooting Flow Chart for PassPort Section 12: 3-7 Troubleshooting Flow Chart for PassPort Troubleshooting in PassPort mode must be completed in conventional mode. If any issues related to the option board are discovered, the PassPort board should be replaced. Start Check Radio Operation on a Non-PassPort Zone with a Conventional Personality without...
  • Page 624 Section 12: 3-8 Troubleshooting Flow Chart for PassPort Notes 6881091C63-F...
  • Page 625 Section 12: 4-1 Chapter 4 UHF BAND 1 (403–470 MHZ) 25–40 W LDMOS PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The UHF circuits are contained on the printed circuit board (PCB) which also contains the controller circuits.
  • Page 626 Section 12: 4-2 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...
  • Page 627 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists Section 12: 4-3 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists R4221 J0451 C0251 R0257 C4210 R4224 C0211 L4201 C0212 C4213 R4223 FL3114...
  • Page 628 Section 12: 4-4 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists C3152 J0401 TP4201 C0267 R3152 C4202 C0492 R0267 C0265 R4204 D4201 R4261 R3147 FL3115 C4261 C0254 C0202 C0497 Q3152 C4288 R0203 C0491 C3144 R0206 U0652 R4206...
  • Page 629 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists Section 12: 4-5 PASUPVLTG L4402 PASUPVLTG PASUPVLTG_UHF_PA_1 C4485 C4602 C4481 C4484 C4421 C4495 C4489 C4436 C4478 C4490 C4493 C4438 L4421 L4436 30pF .033uF 3000pF 30pF .033uF 1000pF 1000pF C4497...
  • Page 630 Section 12: 4-6 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists C4212 .018uF U4211 LP2951 5V_UHF_FN_1 5V_UHF_FN_2 IN_5V_RF_REG_UHF_FN_1 4.97 VDC OUTPUT IN_5V_RF_REG (SOURCE) INPUT 6.68 VDC ERROR FEEDBACK SENSE SHUTDOWN C4215 10.87 VDC C4211 C4213 C4216 5V_TAP...
  • Page 631 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists Section 12: 4-7 Q4333 VCOBIAS_2_UHF_VCO 0 VDC (Tx) R4346 2.43 VDC (Rx) VCOBIAS_2 0 VDC (Tx) 4.7 VDC (Rx) C4375 VSF_UHF_VC0 R4301 R4341 4.58 VDC 5V_UHF_VCO RXSW 5.6K C4308...
  • Page 632 Section 12: 4-8 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists R4071 Q4004 R4072 FECTRL_2_UHF_FE R4061 C4061 C4062 330pF 0.1uF R4002 9V3_UHF_FE R4062 1.5K C4069 R4070 .01uF C4011 C4013 C4012 C4010 R4016 3300pF 330pF 3300pF C4064 330pF...
  • Page 633 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists Section 12: 4-9 FL3115 CFWC455F 9180469V04 U3111-1 CFUCJ455F CFWC455G U3111-4 U3115-1 U3115-4 FL3113 FL3111 9180468v04 9180469V03 CNTL CNTL CNTL CNTL R3153 Q3151 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 BWSELECT 9V3_VHF_IF_2 R3114 R3104...
  • Page 634 Section 12: 4-10 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists † UHF B1 25–40 W PCB 8486127Z01 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No.
  • Page 635 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists Section 12: 4-11 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C4031 2113740F30 13pF...
  • Page 636 Section 12: 4-12 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8486127Z01, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. J0551 0905505Y04 FLEX CONNECTOR...
  • Page 637 TCXO 16.8MHZ R4004 0662057A59 2.7K R4344 0662057A01 SH4301 2602641Y02 SHIELD R4005 0662057A73 R4346 0662057A73 SH4302 2602641Y02 SHIELD * Motorola Depot Servicing only R4007 0662057A25 R4347 0662057B47 T4051 2505515V03 TRANSFORMER 4:1 Reference designators with an asterisk indicate R4012 0662057A97 100K R4360 0662057A35...
  • Page 638 Section 12: 4-14 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists J0451 R4221 C0251 R0257 C4210 R4224 C0212 R4223 FL3114 Y3102 C4231 C4242...
  • Page 639 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists Section 12: 4-15 C4421 L4402 L4436 C4484 R4600 L4543 R4513 R4601 C4437 C4439 L4541 Q4452 E0631 R4414 C4424 R4635 VR0601 C4630 R4481 C4629 Q4451 R4489 C4422 R4632 R4491 L4492...
  • Page 640 Section 12: 4-16 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists PASUPVLTG L4402 PASUPVLTG R4608 PASUPVLTG_UHF_PA_1 100K C4485 C4602 C4481 C4484 C4421 C4495 C4489 C4490 C4497 C4493 C4478 C4438 C4708 C4436 57R01 L4421 L4436 30pF .033uF 3000pF...
  • Page 641 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists Section 12: 4-17 5V_UHF_FN_1 5V_UHF_FN_2 IN_5V_RF_REG_UHF_FN_1 4.97 VDC IN_5V_RF_REG (SOURCE) 6.68 VDC 10.87 VDC C4213 C4216 C4211 C4215 2.2uF .01uF ADP3300 0.1uF 2.2uF C4203 L4201 U4211 C4217 C4201 390nH...
  • Page 642 Section 12: 4-18 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists Q4333 0 VDC (Tx) VCOBIAS_2_UHF_VCO 2.43 VDC (Rx) R4346 VCOBIAS_2 0 VDC (Tx) 4.7 VDC (Rx) C4375 0.1uF 4.58 VDC R4301 VSF_UHF_VC0 5V_UHF_VCO R4341 RXSW 5.6K...
  • Page 643 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists Section 12: 4-19 R4071 FECTRL_2_UHF_FE R4072 R4061 FECTRL_2 C4062 C4061 0.1uF 330pF Q4004 9V3_UHF_FE R4002 R4062 C4069 1.5K R4070 .01uF C4011 C4012 C4013 C4010 3300pF 330pF 3300pF 330pF C4064...
  • Page 644 Section 12: 4-20 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists FL3115 CFWC455F 9180469V04 OUT 2 MC74HC4066 MC74HC4066 MC74HC4066 FL3111 FL3113 CFWC455G CFUCJ455F 9180469V03 9180468v04 1 IN 1 IN CNTL CNTL CNTL CNTL R3153 U3115-4 U3111-1 U3111-4...
  • Page 645 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists Section 12: 4-21 UHF B1 25–40 W PCB 8471223L02 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No.
  • Page 646 Section 12: 4-22 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C4459 2113944F01 CAP 100 PF...
  • Page 647 RES 10K OHM R4496 0613959Y47 RES 82 OHM R4323 0613952J25 RES 100K OHM R4497 0613959Q42 RES 51 OHM * Motorola Depot Servicing only R4331 0613952H33 RES 22 OHM R4501 0613952H75 RES 1200 OHM Reference designators with an asterisk indicate R4341 0613952G67...
  • Page 648 Section 12: 4-24 UHF Band 1 (403–470 MHz) 25–40 W LDMOS PCB 8471223L02, Schematics, and Parts Lists Notes 6881091C63-F...
  • Page 649 Table of Contents Chapter 1 Model Charts and Technical Specifications 1.0 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Model Charts....13:1-1 1.1 CDM Series Model Chart ................13:1-1 1.2 PRO Series Model Chart................13:1-2 2.0 Technical Specifications .................13:1-2 Chapter 2 Theory of Operation 1.0 Introduction .....................13:2-1...
  • Page 650 Section 13: ii Chapter 4 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCBs, Schematics, and Parts Lists 1.0 Allocation of Schematics and Circuit Boards ..........13:4-1 1.1 Controller Circuits ..................13:4-1 2.0 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists................

  • Page 651: Chapter 1 Model Charts And Technical Specifications

    Section 13: 1-1 Chapter 1 MODEL CHARTS AND TECHNICAL SPECIFICATIONS UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Model Charts CDM Series Model Chart CDM Series, UHF (450–512 MHz) 25–40 W LDMOS (Conventional, LTR/PassPort) Model Description AAM25SKC9AA1AN CDM750, 450–512 MHz, 25–40 W, Conv Pref (LDMOS) AAM25SKD9AA2AN CDM1250, 450–512 MHz, 25–40 W, Conv Pref (LDMOS)

  • Page 652: Pro Series Model Chart

    Section 13: 1-2 Technical Specifications PRO Series Model Chart PRO Series, UHF (450–520 MHz) 25–40W LDMOS Model Description LAM25SKC9AA1AN PRO3100, 450 520 MHz, 25 40W, 12.5/20/25 kHz Ch Sp Conv Pref (LDMOS) – – LAM25SKD9AA2AN PRO5100, 450 520 MHz, 25 40W, 12.5/20/25 kHz Ch Sp Conv Pref (LDMOS) –...
  • Page 653 Technical Specifications Section 13: 1-3 Transmitter UHF 450 512 MHz (CDM) – *Frequencies Full Bandsplit – UHF 450 520 MHz (PRO) – Channel Spacing 12.5/20/25 kHz Frequency Stability ±1.5 ppm (-30°C to +60°C, +25° Ref.) ±2.0 ppm Power 25-40 W ±2.5 @ 12.5 kHz Modulation Limiting ±4.0 @ 20 kHz...
  • Page 654 Section 13: 1-4 Technical Specifications Notes 6881091C63-F...

  • Page 655: Chapter 2 Theory Of Operation

    Section 13: 2-1 Chapter 2 THEORY OF OPERATION Introduction This chapter provides a detailed theory of operation for the UHF circuits in the radio. For details of the theory of operation and troubleshooting for the associated controller circuits refer to the controller section of the manual.

  • Page 656: Front-End Bandpass Filters And Pre-Amplifier

    Section 13: 2-2 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Receiver Front-End The two 2-pole 44.85 MHz crystal filters in the high-IF section and two pairs of 455 kHz ceramic filters in the low-IF section provide the required adjacent channel selectivity. The correct pair of ceramic filters for 12.5 or 25 kHz channel spacing is selected via control line BWSELECT.

  • Page 657: Uhf Band 2 (450-512/520 Mhz) 25-40 W Ldmos Transmitter Power Amplifier

    UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Transmitter Power Amplifier (PA) 40 W Section 13: 2-3 20/25 kHz channel spacing, or FL3111 and FL3113/F3115 for 12.5 kHz channel spacing. These pairs are selectable via BWSELECT. The filtered output from the ceramic filters is applied to the limiter input pin of the IF IC (pin 14).

  • Page 658: First Power Controlled Stage

    Section 13: 2-4 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Transmitter Power Amplifier (PA) 40 W First Power Controlled Stage The first stage (U5401) is a 20 dB gain integrated circuit containing two LDMOS FET amplifier stages. It amplifies the RF signal from the VCO (TXINJ). The output power of stage U5401 is controlled by a DC voltage applied to pin 1 from Q5473.

  • Page 659: Harmonic Filter

    UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Transmitter Power Amplifier (PA) 40 W Section 13: 2-5 Antenna Switch The antenna switch consists of two PIN diodes, D5471 and D5472. In the receive mode, both diodes are off. Signals applied at the antenna jack J5401 are routed, via the harmonic filter, through network L5472, C5474 and C5475, to the receiver input.

  • Page 660: Uhf Band 2 (450-512/520 Mhz) 25-40 W Ldmos Frequency Synthesis

    Section 13: 2-6 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Frequency Synthesis UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Frequency Synthesis The synthesizer subsystem shown in Figure 13-3, consists of the reference oscillator (Y5261 or Y5262), the Low Voltage Fractional-N synthesizer (LVFRAC-N, U5201), and the Voltage Controlled Oscillator (VCO).

  • Page 661: Reference Oscillator

    UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Frequency Synthesis Section 13: 2-7 LOCK LOCK (U0101 PIN 56) DATA (U0101 PIN 100) DATA FREFOUT FREF (U0221 PIN 34) CLOCK (U0101 PIN 1) 6, 22, 33, 44 CSX (U0101 PIN 2) STEERING LINE MODIN...

  • Page 662: Synthesizer Operation

    Section 13: 2-8 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Frequency Synthesis AUX3 (U5201 Pin2) U5201 Pin 32 Prescaler Out TRB IN Pin 20 Pin 19 Pin 12 Pin7 Rx-SW TX/RX/BS Pin13 Tx-SW Switching Network LO RF INJECTION Presc (U5201 Pin28) Matching Vcc-Superfilter...
  • Page 663 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Frequency Synthesis Section 13: 2-9 reference signal. The reference signal is generated by dividing down the signal of the reference oscillator (Y5261 or Y5262). The output signal of the phase detector is a pulsed DC signal routed to the charge pump. The charge pump outputs a current at U5201, pin 43 (IOUT).
  • Page 664 Section 13: 2-10 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS Frequency Synthesis Notes 6881091C63-F...

  • Page 665: Troubleshooting Charts

    Section 13: 3-1 Chapter 3 TROUBLESHOOTING CHARTS Troubleshooting Flow Chart for Receiver (Sheet 1 of 2) START Bad SINAD Bad 20 dB Quieting No Recovered Audio Check Controller Audio at (in the case of no audio) pin 8 of OR ELSE go to “B” U3101? Spray or inject 44.85 MHz into XTAL Filter FL3101...

  • Page 666: Troubleshooting Flow Chart For Receiver

    Section 13: 3-2 Troubleshooting Flow Chart for Receiver Troubleshooting Flow Chart for Receiver (Sheet 2 of 2) Inject RF into J5401 Trace IF signal from C3101 to IF Signal at signal at Q3102 Q3101. Check for C3101? collector? bad XTAL filter. Before replacing U3101, check U3101 voltages.

  • Page 667: Troubleshooting Flow Chart For 40 W Transmitter

    Troubleshooting Flow Chart for 40 W Transmitter Section 13: 3-3 Troubleshooting Flow Chart for 40 W Transmitter START No power Check if Pressure Pad closes S5440 Check Check Is Vctrl MOSBIAS_2/ Is Q5473 ASFIC there? MOSBIAS_3 Change Q5473 Check voltage Check Check on pin 4, U5501...

  • Page 668: Troubleshooting Flow Chart For Synthesizer

    Section 13: 3-4 Troubleshooting Flow Chart for Synthesizer Troubleshooting Flow Chart for Synthesizer Start Check 5 V at U5201 Regulator pins 5, 20, 34 U5211 & 36 Visual Correct check of the Problem Board Check D5201, C5202, C5203, & C5206 16.8 MHz 16.8 MHz Replace...

  • Page 669: Troubleshooting Flow Chart For Vco

    Troubleshooting Flow Chart for VCO Section 13: 3-5 Troubleshooting Flow Chart for VCO Low or no RF Signal Low or no RF Signal TX VCO RX VCO at input to PA at TP5003 Visual check Visual check Correct of board of board Problem Make sure Synthesizer is...

  • Page 670: Troubleshooting Flow Chart For Passport

    Section 13: 3-6 Troubleshooting Flow Chart for PassPort Troubleshooting Flow Chart for PassPort Troubleshooting in PassPort mode must be completed in conventional mode. If any issues related to the option board are discovered, the PassPort board should be replaced. Start Check Radio Operation on a Non-PassPort Zone with a Conventional Personality without...
  • Page 671 Section 13: 4-1 Chapter 4 UHF BAND 2 (450–512/520 MHZ) 25–40 W LDMOS PCBS, SCHEMATICS, AND PARTS LISTS Allocation of Schematics and Circuit Boards Controller Circuits The UHF circuits are contained on the printed circuit board (PCB) which also contains the controller circuits.
  • Page 672 Section 13: 4-2 Allocation of Schematics and Circuit Boards Notes 6881091C63-F...
  • Page 673 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists Section 13: 4-3 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists R5221 C0251 R0257 J0451 C5210 R5224 C0212 C5213 R5223 FL3114 Y3102 C5231...
  • Page 674 Section 13: 4-4 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists C5203 R5203 J0401 TP5201 C0267 R3152 R5204 R0267 C5202 C0492 D5201 R5261 R3147 C5288 C0254 C0202 C0497 C0265 Q3152 FL3115 R0206 C3144 C0491 U0652 R0203 Y5261...
  • Page 675 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists Section 13: 4-5 PASUPVLTG 57R01 L5402 PASUPVLTG PASUPVLTG_UHF_PA_1 C5485 C5602 C5481 C5438 C5484 C5421 C5495 C5489 C5490 C5436 C5493 C5478 L5421 L5436 30pF .033uF 3000pF 30pF .033uF 1000pF C5497...
  • Page 676 Section 13: 4-6 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists C5212 .018uF U5211 LP2951 5V_UHF_FN_1 5V_UHF_FN_2 IN_5V_RF_REG_UHF_FN_1 4.97 VDC OUTPUT INPUT IN_5V_RF_REG (SOURCE) ERROR FEEDBACK 6.6 VDC SENSE C5216 SHUTDOWN C5215 C5213 10.87 VDC C5211 5V_TAP .01uF...
  • Page 677 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists Section 13: 4-7 Q5333 VCOBIAS_2_UHF_VCO 4.7K VCOBIAS_2 R5346 4.2 Vdc (Rx) 4.5 Vdc (Rx) 0 Vdc (Tx) C5375 0 Vdc (Tx) R5301 R5341 4.5 Vdc VSF_UHF_VC0 5V_UHF_VCO 5.6K RXSW...
  • Page 678 Section 13: 4-8 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists R5071 FECTRL_2_UHF_FE R5072 R5061 FECTRL_2 C5062 C5061 0.1uF 330pF Q5004 R5002 9V3_UHF_FE R5062 C5069 1.5K R5070 .01uF C5011 C5012 C5013 C5010 3300pF 330pF 3300pF 330pF C5064...
  • Page 679 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists Section 13: 4-9 FL3115 CFWC455F 9180469V04 U3111-1 CFWC455G CFUCJ455F U3115-4 U3111-4 U3115-1 FL3113 FL3111 9180468v04 9180469V03 CNTL CNTL CNTL CNTL R3153 Q3151 9V3_VHF_IF_1 R3151 BWSELECT_VHF_IF_1 BWSELECT 9V3_VHF_IF_2 R3114 R3104...
  • Page 680 Section 13: 4-10 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists † UHF B2 25-40 W PCB 8486250Z02 Parts List Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Part No. Part No. Part No.
  • Page 681 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists Section 13: 4-11 Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. C5053 2113740F23 6.8pF...
  • Page 682 Section 13: 4-12 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists Circuit Motorola Circuit Motorola Circuit Motorola Circuit Motorola Description Description Description Description Part No. Part No. Part No. Part No. L5053 2462587N43 15nH...
  • Page 683 PMUE1874_ only) R5020 0662057A01 R5362 0662057A01 T5052 2508397X02 TRANSFORMER 1:1 R5021 0662057A01 R5363 0662057A49 U0101 5102226J56 MICROPROCESSOR * Motorola Depot Servicing only R5022 0662057B47 R5381 0662057A41 U0111 5102463J64 EEPROM Reference designators with an asterisk indicate R5051 0662057A18 R5401 0662057A36 U0121 5186137B01...
  • Page 684 Section 13: 4-14 UHF Band 2 (450–512/520 MHz) 25–40 W LDMOS PCB 8486250Z02, Schematics, and Parts Lists Notes 6881091C63-F...
  • Page 685 Some replacement parts, spare parts, and/or product information can be ordered directly. While parts may be assigned with a Motorola part number, this does not guarantee that they are available from Motorola Radio Products and Solutions Organization (RPSO). If no Motorola part number is assigned, the part is normally not available from Motorola, or is not a user-serviceable part.
  • Page 686 Appendix: A-2 Parts Identification Parts Identification Radio Products and Solutions Organization* (United States and Canada) 1-800-422-4210 Product Customer Service Radio Products and Solutions Organisation (United States and Canada) 1-800-927-2744 *The Radio Products and Solutions Organization (RPSO) was formerly known as the Radio Products Services Division (RPSD) and/or the Accessories and Aftermarket Division (AAD).

This manual is also suitable for:

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