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Panasonic KX-TG6551CAM Service Manual
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Panasonic KX-TG6551CAM Service Manual

Telephone equipment
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AOH and Caller ID Compatible
KX-TGA650RUM/651RUM
(Handset)
(Charger Unit)
Configuration for each model
Model No
Base Unit
Handset
KX-TG6551 1 (TG6551) 1 (TGA650)
KX-TGA651*
1 (TGA651)
* KX-TGA651 is also an optional accessory, which contains
a handset and a charger.
KX-TG6551CAM
(Base Unit)
Charger Unit Expandable
Up to 6
1
Telephone Equipment
KX-TG6551CAM
Model No.
KX-TGA650RUM
KX-TGA651RUM
Digital Cordless Phone
M: Metallic Grey Version
(for Kazakhstan)
(for Tajikistan)
(for Uzbekistan)
(for Turkmenistan)
(for Kyrgyzstan)
© Panasonic System Networks Co., Ltd. 2010
Unauthorized copying and distribution is a
violation of law.
ORDER NO. KM41010276CE

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Summary of Contents for Panasonic KX-TG6551CAM

  • Page 1 KX-TG6551 1 (TG6551) 1 (TGA650) Up to 6 KX-TGA651* 1 (TGA651) * KX-TGA651 is also an optional accessory, which contains a handset and a charger. © Panasonic System Networks Co., Ltd. 2010 Unauthorized copying and distribution is a violation of law.
  • Page 2 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians.

  • Page 3: Table Of Contents

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions----------------------------------------------- 4 14.2. Circuit Board (Base Unit_Operation)---------------- 81 1.1. For Service Technicians --------------------------------- 4 14.3. Circuit Board (Handset) -------------------------------- 83 2 Warning -------------------------------------------------------------- 4 14.4. Circuit Board (Charger Unit)--------------------------- 85 2.1. Battery Caution--------------------------------------------- 4 15 Exploded View and Replacement Parts List ----------- 86 15.1.

  • Page 4: Safety Precautions

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 1 Safety Precautions 1.1. For Service Technicians • Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires, injury or electric shock, which can be caused by improper repair work.

  • Page 5: Discarding Of P.c. Board

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 2.2.1. Suggested PbF Solder There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper (Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu) or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check the manufacturer’s specific instructions for the melting points of their products and any precautions for using their product with other materials.

  • Page 6: Specifications

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 3 Specifications ■ ■ Power source (AC Adaptor): Standard: 220–240 V AC, 50/60 Hz DECT (Digital Enhanced Cordless Base unit: PQLV219CEW Telecommunications), GAP (Generic Access Profile) Charger: PQLV219CEW ■ ■ Power consumption Number of channels: Base unit: 120 Duplex Channels Standby: Approx.

  • Page 7: Technical Descriptions

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4 Technical Descriptions 4.1. Block Diagram (Base Unit_Main)

  • Page 8: Block Diagram (Base Unit_Rf Part)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.2. Block Diagram (Base Unit_RF Part) ANT2 ANT2 ANT1 DA801 TXON RXON ANT1 KX-TG6551 BLOCK DIAGRAM (Base Unit_RF Part)

  • Page 9: Circuit Operation (Base Unit)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.3. Circuit Operation (Base Unit) General Description: (BBIC, EERROM) is a digital speech/signal processing system that implements all the functions of speech compression, record and playback, and memory management required in a digital telephone. The BBIC system is fully controlled by a host processor. The host processor provides activation and control of all that functions as follows.
  • Page 10 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.3.3. Power Supply Circuit/Reset Circuit The power supply voltage from AC adaptor is converted to VBAT (3.0V) in IC302. And +3.0V for peripherals and analog part is insulated from VBAT by Doubler of BBIC. Circuit Operation: +3.0V VBAT IC611...
  • Page 11 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.3.3.1. Charge Circuit The voltage from the AC adaptor is supplied to the charge circuits. +6.5V F301 CHARGE+ CHARGE-...
  • Page 12 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.3.4. Telephone Line Interface Telephone Line Interface Circuit: Function • Bell signal detection • ON/OFF hook and pulse dial circuit • Side tone circuit Bell signal detection and OFF HOOK circuit: In the idle mode, Q141 is open to cut the DC loop current and decrease the ring load. When ring voltage appears at the Tip (T) and Ring (R) leads (When the telephone rings), the AC ring voltage is transferred as follows: T →...
  • Page 13 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.3.5. Parallel Connection Detect Circuit Function: In order to disable call waiting and stutter tone functions when using telephones connected in parallel, it is necessary to have a circuit that judges whether a telephone connected in parallel is in use or not. This circuit determines whether the telephone connected in parallel is on hook or off hook by detecting changes in the T/R voltage.
  • Page 14 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.3.6. Transmitter/Receiver • Audio Circuits and DTMF tone signal circuits. Base Unit and Handset mainly consist of RF Module and DECT BBIC. Base Unit and Handset transmit/receive voice signal and data signal through the antenna on carrier frequency. Signal Path: *Refer to Signal Route (P.18).

  • Page 15: Block Diagram (Handset)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.4. Block Diagram (Handset)

  • Page 16: Circuit Operation (Handset)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.5. Circuit Operation (Handset) 4.5.1. Outline Handset consists of the following ICs as shown in Block Diagram (Handset) (P.15). • DECT BBIC (Base Band IC): IC1 - All data signals (forming/analyzing ACK or CMD signal) - All interfaces (ex: Key, Detector Circuit, Charge, DC/DC Converter, EEPROM, LCD, RF Power Amp.)

  • Page 17: Circuit Operation (Charger Unit)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.6. Circuit Operation (Charger Unit) 4.6.1. Power Supply Circuit The power supply is as shown. AC Adaptor...

  • Page 18: Signal Route

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 4.7. Signal Route ROUTE SIGNAL ROUTE HANDSET TX <HANDSET_RF_TX_ROUTE> - ANT. --- ---ANT. - <BASE_UNIT_RF_RX_ROUTE> - IC501(46/47 - 28) - R181 - C184 - Q161 - Q141 - D101 - L101/[L102 - P101] - T/R(TEL LINE) HANDSET RX T/R(TEL LINE) - L101/[P101 - L102] - D101 - Q141 - R165 - C173 - Q171 - C178 - R178 - IC501(16 - 44/45) - <BASE_UNIT_RF_TX_ROUTE>...
  • Page 19 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM SIGNAL ROUTE ROUTE HANDSET RF IC1(44/45) - L809 - C812 - DA801 - C895 - ANT [ TX_ROUTE ] HANDSET RF ANT - C895 - DA801 - C826 - IC1(46/47) [ RX_ROUTE ] IC501(44/45) - C812 - L809 - DA801 - C895 - DA802 - C893/C894 - ANT1/ANT2...

  • Page 20: Location Of Controls And Components

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 5 Location of Controls and Components Refer to the Operating Instructions. Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server. 6 Installation Instructions Refer to the Operating Instructions. Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server.

  • Page 21: Service Mode

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 8 Service Mode 8.1. Engineering Mode 8.1.1. Base Unit Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. Soft keys {ic} (Off/Power) Naviga tor key/ (Volume) key {ECO/R} ECO: Eco mode shortcut key...
  • Page 22 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Frequently Used Items (Base Unit) ex.) Items Address Default Data New Data Remarks Frequency 00 08/00 07 01/00 Use these items in a READ-ONLY mode to confirm the contents. Careless rewriting may 00 02~00 06 Given value cause serious damage to the computer system.
  • Page 23 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 8.1.2. Handset Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. Soft keys {ic} (Off/Power) Naviga tor key/ (Volume) key {ECO/R} ECO: Eco mode shortcut key R: Recall/Flash Dial keypad...
  • Page 24 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Frequently Used Items (Handset) ex.) Items Address Default Data New Data Possible Adjusted Possible Adjusted Remarks Value MAX (hex) Value MIN (hex) Sending level 03 17 Adjusted value Given value (*2) Receiving level 03 18 Adjusted value Given value...

  • Page 25: Copying Phonebook Items When Repairing

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 8.2. Copying Phonebook Items when Repairing You can copy the handset phonebook to another (compatible Panasonic) handset. This will help to save the original phonebook data which the customer has registered. Refer to the following procedures. Phonebook data is stored in a handset.
  • Page 26 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Case 3: A handset has a defect. (Radio transmission is functioning.) Service center has a normal HS (B). HS (A) HS (A) HS (B) BS (A) BS (A) 1. Cancel HS (A). 2. Register HS (B) as a handset no. 1.

  • Page 27: How To Clear User Setting

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 8.3. How to Clear User Setting Units are reset to the Factory settings by this operation (Erase recorded Voice messages, stored Phone numbers, Caller list and etc.) Note: • Some menus are not reset. Refer to Operating Instructions (P.20).

  • Page 28: Troubleshooting Guide

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9 Troubleshooting Guide 9.1. Troubleshooting Flowchart Flow Chart FLOW CHART Not working Power ON Base Unit Check Power Link No link No charge Battery Charge Check Battery Charge Check Link Range Check the RF part No voice Handset Voice Transmission...
  • Page 29 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.1. Check Power 9.1.1.1. Base Unit Is the AC Adaptor inserted into AC outlet? (*1) Is the AC Adaptor inserted into AC outlet? (*1) AC Adaptor. Is output voltage of AC adaptor 6.5 V? Check Check Power Supply Circuit.
  • Page 30 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.2. Check Battery Charge 9.1.2.1. Base Unit Plug in the AC Power source. Charge Handset on Base Unit. Check Charge Circuit of Base Unit. Is the voltage of two charge contacts about 3 V or more? Check Handset. Check Charge Contacts at Base Unit from mechanical point of view.
  • Page 31 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.3. Check Link 9.1.3.1. Base Unit Does Base Unit make link with normal working Base Unit is OK. Check Handset. Handset? Is the voltage of VBAT about 3.0 V? Check around Power Supply Circuit. Refer to Check Point...(A) Is the voltage of VDDC about 1.2 V? Refer to Check Point...(B)
  • Page 32 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM *2 How to adjust the frequency of X501: To see the frequency, execute the command “SFR”, then check the TP_CKM (IC501-57pin). To adjust frequency, send command “SFR” until the frequency counter becomes13.824 MHZ±55HZ. Is the Frequency Drift OK? Refer to Check Point...(M).
  • Page 33 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.3.2. Handset Does Handset make link with Base Unit? Handset is OK. Check Base Unit. (Correct working unit) Is the voltage of "1.8V" about 1.8 V? Adjust C10 voltage to 1.8 V. Refer to Check Point...(A). Refer to Check Point...(A).
  • Page 34 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Is the Frequency Drift OK? Refer to Check Point...(N). Is the Sensitivity Receiver OK? Refer to Check Point...(O). Is the Power RAMP OK? Replace with a new Circuit Board. Refer to Check Point...(P). Cross Reference: Check Point (Handset) (P.44)
  • Page 35 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.4. Check the RF part 9.1.4.1. Finding out the Defective part 1. Prepare Regular HS(*1) and Regular BU(*2). 2. a. Re-register regular HS (Normal mode) to base unit (to be checked). If this operation fails in some ways, the base unit is defective.
  • Page 36 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.4.2. RF Check Flowchart Each item (1 ~ 3) of RF Check Flowchart corresponds to Check Table for RF part (P.37). Please refer to the each item. Start Link Control Check DSP interface parts. confirmation signal (RF Block <->DSP on BU/HS P.C.B)
  • Page 37 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.4.3. Check Table for RF part Item BU (Base Unit) Check HS (Handset) Check Link Confirmation Normal 1. Register Regular HS to BU (to be 1. Register HS (to be checked) to Regular checked). HS, BU Mode: [Normal mode] 2.
  • Page 38 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.5. Registering a Handset to the Base Unit The supplied handset and base unit are pre-registered. If for some reason the handset is not registered to the base unit (for example, _ is displayed even when the handset is near the base unit), re-register the handset.
  • Page 39 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.7. Check Handset Transmission Check MIC of Handset. Check CDL TX (HANDSET) in Signal Route. Cross Reference: Signal Route (P.18) 9.1.8. Check Handset Reception Check Handset Speaker in How to check the Handset Speaker or Receiver. Check CDL RX (HANDSET) in Signal Route.
  • Page 40 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.1.10. Bell Reception 9.1.10.1. Base Unit When bell signal is coming, is there bell sound Check around R111, R112, R113, R114, Q111, signal at BBIC (IC501: 59)? D113, C111, C112, When bell signal is coming, is there bell sound Check around L474, L475.

  • Page 41: Troubleshooting By Symptom (Base Unit And Charger Unit)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.2. Troubleshooting by Symptom (Base Unit and Charger Unit) If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester (*1) or not. Remedy (*2) Symptom You have DECT Tester.
  • Page 42 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Items Check Procedure Check or Point Replace Parts (I) DTMF Generator Check 1. Connect Telephone Socket to DTMF tester. (Load=600 Ω) R181, C184, 2. Link Handset and push dial key. Q161, D141 3. Confirm DTMF character. 4. Confirm that the high Group is -3.0 ± 2dBm.
  • Page 43 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Items Check Procedure Check or Point Replace Parts (O)* Timing Confirmation Follow steps 1 to 6 of (J). IC501, C805, ANT 1 7.Confirm that the Timing accuracy is C806, C810, • ± 5.0 ppm (When adjust the frequency of CLK in item (G)).

  • Page 44: Troubleshooting By Symptom (Handset)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.3. Troubleshooting by Symptom (Handset) If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester (*1) or not. Remedy (*2) Symptom You have DECT Tester. You don't have DECT Tester.
  • Page 45 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Items Check Procedure Check or Point Replace Parts (F)* Battery Monitor Check 1. Apply 2.25 V between BATT+ and BATT-. IC1, F1, C1, 2. Execute the command sendchar PAD sendchar LED 0 sendchar CRX 0 1 sendchar AD1 It assumes that the return value is XX.
  • Page 46 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Items Check Procedure Check or Point Replace Parts (K)* Frequency Offset Follow steps 1 to 3 of (I). IC1, Confirmation 4.Confirm that the frequency Offset is < ± 50 kHz. C802~C806, C808~C814, C819~C820, C822, C825~C827, C834, C860~C864, L801~L804, DA801,...
  • Page 47 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 9.3.2. Troubleshooting for Speakerphone When the customer’s telephone line corresponds to the following conditions, and the transmission signal of SP-Phone is interrupted, performing the next set up to a cordless handset will improve it to some extent. Conditions 1. When customer’s line has less line loss.

  • Page 48: Disassembly And Assembly Instructions

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 10 Disassembly and Assembly Instructions 10.1. Disassembly Instructions 10.1.1. Base Unit Remove the 5 screws to remove the cabinet cover. Remove the tapes and solders. Cabinet cover Remove the screw . Remove the parallel wires to remove Main P.C. board the main P.C.
  • Page 49 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Remove the 2 screws to remove 2 screws the jack holder. Remove the 4 screws to remove the operational P.C. board. 4 screws Jack holder Operational P.C. board...
  • Page 50 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 10.1.2. Handset 2 screws Remove the 2 screws. Insert a JIG (PQDJ10006Y) between the cabinet body Cabinet body and the cabinet cover, then pull it along the gap to open the cabinet. Cabinet cover Likewise, open the other side of the cabinet.
  • Page 51 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 10.1.3. Charger Unit 2 charge terminals...

  • Page 52: How To Replace The Handset Lcd

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 10.2. How to Replace the Handset LCD Note: The illustrations are simplified in this page. They may differ from the actual product. P. C. board Vertical Interval Tolerance Peel off the FFC (Flexible Flat Cable) from 0.2 mm the LCD, in the direction of the arrow. Take care to ensure that the foil on the P.C.

  • Page 53: Measurements And Adjustments

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11 Measurements and Adjustments This chapter explains the measuring equipment, the JIG connection, and the PC setting method necessary for the measurement in Troubleshooting Guide (P.28) 11.1. Equipment Required • Digital multi-meter (DMM): it must be able to measure voltage and current.
  • Page 54 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.2.2. How to install Batch file into P.C. Insert the Batch file CD-ROM into CD-ROM drive and copy PNZZTG**** folder to your PC (example: D drive). <Example for Windows> On your computer, click [Start], select Programs Open an MS-DOS mode window.

  • Page 55: Adjustment Standard (Base Unit)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.3. Adjustment Standard (Base Unit) When connecting the simulator equipment for checking, please refer to below. 11.3.1. Bottom View C301 F301 3.0A +6.5V R116 C311 R301 R118 R302 C303 C310 C116 C104 D104 R122 IC301 R103 Q111 C103 C309...

  • Page 56: Adjustment Standard (Charger Unit)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.4. Adjustment Standard (Charger Unit) When connecting the simulator equipment for checking, please refer to below. 11.4.1. Bottom View Digital Volt Meter /2 W DC POWER DC 6.5 V Note: (A) is referred to Check Point (Charger Unit) (P.43)

  • Page 57: The Setting Method Of Jig (Handset)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.5. The Setting Method of JIG (Handset) This section explains the PC setting to use command required in Check Point (Handset)(P.44). <Preparation> (PQZZ1CD505E), change following values • Serial JIG cable: PQZZ1CD300E* resistance. Then you can use it as a JIG Cable for both •...
  • Page 58 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.5.2. How to install Batch file into P.C. Insert the Batch file CD-ROM into CD-ROM drive and copy PNZZTG***** folder to your PC (example: D drive). <Example for Windows> Open an MS-DOS mode window. On your computer, click [Start], select Programs...

  • Page 59: Adjustment Standard (Handset)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.6. Adjustment Standard (Handset) When connecting the simulator equipments for checking, please refer to below. 11.6.1. Component View KX-TGA650XX KX-TGA651XX PNLB1734Y KX-TGA250XX KX-TGA251XX KX-TGA403XX TP_ANT1 TGA650XX TGA651XX C152 C175 R578 TGA250XX TGA251XX TGA403XX C106 C200 C201 R231 C104 C107...

  • Page 60: Things To Do After Replacing Ic Or X'tal

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.7. Things to Do after Replacing IC or X'tal If repairing or replacing EEPROM and X'tal, it is necessary to download the required data such as Programming data or adjustment data, etc in memory. The set doesn't operate if it is not executed.
  • Page 61 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.7.1.2. Handset First, operate the PC setting according to The Setting Method of JIG (Handset)(P.57). Then download the appropriate data according to the following procedures. Items How to download/Required adjustment BBIC (FLASH type) Programming data is stored in memory.

  • Page 62: Rf Specification

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.8. RF Specification 11.8.1. Base Unit Item Value Refer to -. * TX Power 19 dBm ~ 25 dBm Check Point (Base Unit) (J) Modulation -370±30/+370±30 kHz/div & Modulated Check Point (Base Unit) (K) width 690 kHz Frequency Offset...

  • Page 63: How To Check The Handset Speaker Or Receiver

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 11.9. How to Check the Handset Speaker or Receiver 1. Prepare the digital voltmeter, and set the selector knob to ohm meter. 2. Put the probes at the speaker terminals as shown below. SPEAKER: Is the value between (+) terminal and (–) terminal about 8 Ω?

  • Page 64: Miscellaneous

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 12 Miscellaneous 12.1. How to Replace the Flat Package IC Even if you do not have the special tools (for example, a spot heater) to remove the Flat IC, with some solder (large amount), a soldering iron and a cutter knife, you can easily remove the ICs that have more than 100 pins.
  • Page 65 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 12.1.3. How to Install the IC 1. Temporarily fix the FLAT PACKAGE IC, soldering the two marked pins. *Check the accuracy of the IC setting with the corresponding soldering foil. 2. Apply flux to all pins of the FLAT PACKAGE IC.

  • Page 66: How To Replace The Llp

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 12.2. How to Replace the LLP (Leadless Leadframe Package) IC Note: This description is only applied on the model with Shield case. 12.2.1. Preparation • PbF (: Pb free) Solder • Soldering Iron Tip Temperature of 700 °F ± 20 °F (370 °C ± 10 °C) Note: We recommend a 30 to 40 Watt soldering iron.
  • Page 67 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 12.2.4. How to Install the IC 1. Place the solder a little on the land where the radiation GND pad on IC bottom is to be attached. Soldering Iron Land Solder P.C.Board 2. Place the solder a little on the land where IC pins are to be attached, then place the IC.

  • Page 68: How To Replace The Shield Case

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 12.3. How to Replace the Shield Case 12.3.1. Preparation • PbF (: Pb free) Solder • Soldering Iron Tip Temperature of 700°F ± 20°F (370°C ± 10°C) Note: We recommend a 30 to 40 Watt soldering iron. An expert may be able to use a 60 to 80 Watt iron where someone with less experience could overheat and damage the PCB foil.
  • Page 69 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 12.3.4. How to Install the Shield Case Note: • If you don’t have special tools (ex. Hot air disordering tool), conduct the following operations. • Shield case’s No. : PNMC1013Z 1. Put the shield case. 2. Solder the surroundings.

  • Page 70: Terminal Guide Of The Ics, Transistors, Diodes And Electrolytic Capacitors

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 12.4. Terminal Guide of the ICs, Transistors, Diodes and Electrolytic Capacitors 12.4.1. Base Unit (Reverse View) 2SC6054JSL, B1ABCE000009 PQVTBF822T7, UNR92A6J0L B1ZBZ0000065 UNR92A9J0L, 2SB1218A C0DBAGZ00026 C2HBCY000059 PNWITG6521EH UNR92A2J0L Cathode Cathode Anode MA111 Anode PQVDRLZ20A MA8033 B1ACGP000007 2SD0874AS B0EDER000009 B0ECKM000008 B0DDCD000001...

  • Page 71: Schematic Diagram

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 13 Schematic Diagram 13.1. For Schematic Diagram 13.1.1. Base Unit (Schematic Diagram (Base Unit)) Notes: 1. DC voltage measurements are taken with voltmeter from the negative voltage line. 2. The schematic diagrams may be modified at any time with the development of new technology.

  • Page 72: Schematic Diagram (Base Unit)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 13.2. Schematic Diagram (Base Unit) ANT2 R807 C892 RXON ANT1 C822 C827 W 0.2mm W 0.15mm R498 L 20mm 1st layer 3rd layer C894 C826 R499 W 0.2mm C820 L 10mm 1.5p 1st layer ANT2 DA801 C805 C895 C812 L809 2.7p...
  • Page 73 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM VCCA *R160 Q143 Q141 +3.0V *Q161 R141 C101 680p C165 C163 100k D101 *Q140 C173 *R164 R161 *R149 R172 100k 0.22u 2.7k 100k Q142 C102 680p R151 *R145 C175 100k 2.2k 1000p P101 MIP MIN *Q171 C174 L474 *C178...

  • Page 74: Schematic Diagram (Base Unit_Operation)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 13.3. Schematic Diagram (Base Unit_Operation) KEY5 KEY4 KEY3 KEY2 KEY1 KEY0 NEWMSG2 STOP NEWMSG ERASE ROW4 CN1-5 CN1-6 CN1-7 AUTO SP-PHONE MUTE CN1-8 ROW3 CN1-9 CN1-10 CN2-2 CN2-3 CN2-4 GREETING REDIAL CN2-5 ROW2 CN2-6 SKIP DOWN IN USE_LED LED1...
  • Page 75 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Memo...

  • Page 76: Schematic Diagram (Handset)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 13.4. Schematic Diagram (Handset) Charge Current BATTERY BATT+ 5.6n C340 C341 C342 C1CP1 R406 J39p +1.8V 6.3V R407 BATTERY 330u (MAX500mA) +1.8V BATTERY R401 1.8V 1.8V BATT- D400 R330 R400 Q400 C400 C331 J56p 6.3V K2.2u R331 C332 330u...
  • Page 77 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM R807 W 0.15mm RXON L 20+/-2mm 3rd layer C827 L801 TP_ANT1 *C826 RX_RF C803 RF_RXn 1.5p DA801 BATTERY RF_RXp W 0.125mm L 7.6mm Gap 0.125mm W 0.15mm CP+3.0V W 0.15mm 1st layer L 5.0mm L 5.0mm 1st layer 1st layer...

  • Page 78: Schematic Diagram (Charger Unit)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 13.5. Schematic Diagram (Charger Unit) R1 12 SCHEMATIC DIAGRAM (Charger Unit)

  • Page 79: Printed Circuit Board

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 14 Printed Circuit Board 14.1. Circuit Board (Base Unit_Main) 14.1.1. Component View PNLB1152Z ANT1 P101 ANT2 R112 R371 C306 R332 C331 D101 DA802 C341 C895 C892 C822 R123 C825 C814 DA801 C891 C827 R141 C898 C826 C517 C899 C863...
  • Page 80 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 14.1.2. Bottom View C301 F301 3.0A +6.5V R116 C311 R301 R118 R302 C303 C310 C116 C104 D104 R122 IC301 R103 Q111 C103 C309 DCDC_OUT VBAT Q302 D301 STM/CKM/P15 (13.824 MHz) R306 GND2 VDDC D133 (1.2V) C601 C530 C120 D132...

  • Page 81: Circuit Board (Base Unit_Operation)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 14.2. Circuit Board (Base Unit_Operation) 14.2.1. Component View KX-TG7341H TG7331H LED4 LED3 ERASE SKIP DOWN PNLB1038Z PROGRAM MUTE LED1 RECALL LED2 SP-PHONE KX-TG6551 CIRCUIT BOARD (Base Unit_Operation (Component View))
  • Page 82 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 14.2.2. Bottom View KX-TG7341H TG7331H PNLB1038Z PNWH01 PNWH02 KX-TG6551 CIRCUIT BOARD (Base Unit_Operation (Bottom View))

  • Page 83: Circuit Board (Handset)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 14.3. Circuit Board (Handset) 14.3.1. Component View KX-TGA650XX KX-TGA651XX PNLB1734Y KX-TGA250XX KX-TGA251XX KX-TGA403XX TP_ANT1 RCV+ RCV- TGA650XX TGA651XX C152 C175 R578 TGA250XX TGA251XX TGA403XX C106 C200 R231 C201 C104 C107 C105 C103 C206 C203 R236 C863 C864 C814 C811...
  • Page 84 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 14.3.2. Bottom View LED12 PNLB1734Y KX-TGA650XX KX-TGA651XX KX-TGA250XX KX-TGA251XX KX-TGA403XX TGA650XX TGA651XX CN51 TGA250XX TGA251XX TGA403XX SOFT_A SOFT_B SOFT_C TALK LEFT RIGHT LED8 LED6 DOWN KX-TGA650/651 CIRCUIT BOARD (Handset_Main (Bottom View))

  • Page 85: Circuit Board (Charger Unit)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 14.4. Circuit Board (Charger Unit) 14.4.1. Component View CIRCUIT BOARD (Charger unit (Component View)) 14.4.2. Bottom View TP4 (GND) CIRCUIT BOARD (Charger unit (Bottom View))

  • Page 86: Exploded View And Replacement Parts List

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 15 Exploded View and Replacement Parts List 15.1. Cabinet and Electrical Parts (Base Unit) PCB2 10 (*1) PCB1 MIC1 Ref.No. Figure 2.6 x 8 mm Note: (*1) The SPACERs (No.10) are cut from the excess parts of SPACER (No.107) of Cabinet and Electrical Parts (Handset)

  • Page 87: Cabinet And Electrical Parts (Handset)

    (*1) This cable is fixed by welding. Refer to How to Replace the Handset LCD (P.52). (*2) The rechargeable Ni-MH battery P03P or HHR-4NGE is available through sales route of Panasonic. (*3) Attach the spacer (No. 119) to the exact location described above.

  • Page 88: Cabinet And Electrical Parts (Charger Unit)

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 15.3. Cabinet and Electrical Parts (Charger Unit) 200-1 PCB200 200-3 200-2 200-4 Ref.No. Figure 2 8 mm...

  • Page 89: Accessories

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 15.4. Accessories...

  • Page 90: Replacement Part List

    KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 15.5. Replacement Part List Safety Ref. Part No. Part Name & Description Remarks 1. RTL (Retention Time Limited) K2ECYZ000001 JACK, DC Note: PQJJ1T039M JACK, MODULAR The “RTL” marking indicates that its Retention Time is PNKF1032Z1 CABINET COVER PS-HB PQHA10023Z...
  • Page 91 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R118 ERJ3GEYJ104 100k C124 ECUE1H100DCQ 10p R121 ERJ3GEYJ394 390k C142 ECUV1H103KBV 0.01 R122 ERJ3GEYJ394 390k C151 ECUE1H100DCQ 10p R124 PQ4R18XJ100 C152 ECJ0EB1A473K 0.047...
  • Page 92 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM (*5) Backside of this IC has a ground plate. Refer to How to Safety Ref. Part No. Part Name & Description Remarks Replace the Flat Package IC (P.64) C863 F1G1H1R5A480 1.5p (*6) Supplied IC is Flat Package Type. C891...
  • Page 93 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks ERJ2GEJ103 C811 F1G1H100A723 10p ERJ2GEJ102 C812 F1G1H100A723 10p ERJ2GEJ101 C813 F1G1H1R6A480 1.6p ERJ2GEJ103 C814 ECUE1H332KBQ 0.0033 ERJ2GEJ102 C819 F1G1H100A723 10p ERJ2GEJ820...
  • Page 94 KX-TG6551CAM/KX-TGA650RUM/KX-TGA651RUM 15.5.6. Fixtures and Tools Note: (*1) See Equipment Required (P.53), and The Setting Method of JIG (Handset) (P.57). (*2) When replacing the Handset LCD, See How to Replace the Handset LCD (P.52). Part No. Part Name & Description Remarks Safety Ref.

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