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Panasonic KX-FT982LS-B Service Manual
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Panasonic KX-FT982LS-B Service Manual

Personal facsimile / facsimile with digital answering system
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Personal Facsimile / Facsimile with Digital Answering System
KX-FT982LS-B
Model No.
KX-FT984LS-B
KX-FT988LS-B
Black version
(for Latin America)
© 2008 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
ORDER NO. KMF0806164CE

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Summary of Contents for Panasonic KX-FT982LS-B

  • Page 1 ORDER NO. KMF0806164CE Personal Facsimile / Facsimile with Digital Answering System KX-FT982LS-B Model No. KX-FT984LS-B KX-FT988LS-B Black version (for Latin America) © 2008 Panasonic Communications Co., Ltd. All rights reserved. Unauthorized copying and distribu- tion is a violation of law.
  • Page 2 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...

  • Page 3: Table Of Contents

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions----------------------------------------------- 4 14.2. Lower Cabinet Section-------------------------------- 133 1.1. For Service Technicians --------------------------------- 4 14.3. Operation Panel Section ---------------------------- 136 1.2. AC Caution -------------------------------------------------- 4 14.4. Installation Position of the Lead Wires------------ 139 1.3.

  • Page 4: Safety Precautions

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 1 Safety Precautions 1. Before servicing, unplug the AC power cord to prevent an electric shock. 2. When replacing parts, use only the manufacturer's recommended components. 3. Check the condition of the power cord. Replace if wear or damage is evident.

  • Page 5: Personal Safety Precautions

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 1.3. Personal Safety Precautions 1.3.1. Moving Sections of the Unit Be careful not to let your hair, clothes, fingers, accessories, etc., become caught in any moving sections of the unit. The moving sections of the unit are the rollers and a gear. There is a separation roller and a document feed roller which are rotated by the document feed motor.

  • Page 6: Service Precautions

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 1.4. Service Precautions 1.4.1. Precautions to Prevent Damage from Static Electricity Electrical charges accumulate on a person. For instance, clothes rubbing together can damage electric elements or change their electrical characteristics. In order to prevent static electricity, touch a metallic part that is grounded to release the static...

  • Page 7: Warning

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 2 Warning 2.1. About Lead Free Solder (PbF: Pb free) Note: In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that con- tains lead.

  • Page 8: Insulation Resistance Test

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 2.2. Insulation Resistance Test 1. Unplug the power cord and short the two prongs of the plug with a jumper wire. 2. Turn on the power switch. 3. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part (screw heads, control shafts, bottom frame, etc.).

  • Page 9: Specifications

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 3 Specifications Applicable Lines: Public Switched Telephone Network Document Size: Max. 216 mm in width Max. 600 mm in length Effective Scanning Width: 208 mm 216 × max. 30 m roll Recording Paper Size: Effective Printing Width:...

  • Page 10: General/Introduction

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 4 General/Introduction 4.1. Optional Accessories Model No. Item Specifications/Usage 216 mm × 30 m roll, with 25 mm core KX-A106 Standard thermal recording paper* Use only the included or specified recording paper. Using other recording paper may affect print quality and/or cause exces- sive wear to the thermal head.

  • Page 11: Features

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 4.2.2. Error Messages-Report 4.2.3. Other-Display 5 Features General • LCD (Liquid Crystal Display) readout • The display and reports will be in the selected language. (Spanish / English) • Automatic Paper Cutter (KX-FT984/KX-FT988 only) Facsimile •...

  • Page 12: Technical Descriptions

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6 Technical Descriptions 6.1. Connection Diagram...

  • Page 13: General Block

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.2. General Block The following is an outline of each device IC on the digital board. (Refer to General Block Diagram (P.14).). 1. ASIC (IC1) Composed mainly of an address decoder and a modem control.

  • Page 14: General Block Diagram

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.2.1. General Block Diagram...

  • Page 15: Control Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.3. Control Section 6.3.1. ASIC (IC1) This custom IC is used for the general FAX operations. 1. CPU: 6. IMAGE DATA RAM: This model uses a Z80 equivalent to the CPU operating This memory is programmed into the ASIC and uses 8 at 24 MHz.
  • Page 16 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B SIGNAL POWER SUPPLIED DESCRIPTION VOLTAGE VDD (3.3V)2 ----- POWER SOURCE (+3.3V) MIDAT/IOP 3.3V PORT (TONE1EN) MICLK/IOP 3.3V OUTPUT PORT (MDMTXEN) MILAT/IOP 3.3V PORT (HSRXEN) 20KOSC/IOP 3.3V OUTPUT PORT (PSHORT/ACK_EN) XWAIT 3.3V INPUT PORT (HOOK) XHSTRD/IOP 3.3V...
  • Page 17 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B SIGNAL POWER SUPPLIED DESCRIPTION VOLTAGE STB2 3.3V STROBE SIGNAL OUTPUT TO THERMAL HEAD STB3 3.3V OUTPUT PORT (NC) XRESET 3.3V RESET INPUT VDD (3.3V)6 ----- POWER SOURCE (+3.3V) VSS8 POWER SOURCE (GND) VSS9 POWER SOURCE (GND) VDD (3.3V)7...
  • Page 18 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.3.2. Flash Memory (IC2) This 512KB ROM (FLASH MEMORY) carries a common area of 32KB and bank areas which each have 8KB (BK4~BK63). The addresses from 0000H to 7FFFH are for the common area and from 8000H to 9FFFH are for the bank areas.
  • Page 19 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.3.5. RTC Back up Circuit 1. Function This unit has a lithium battery (BAT1) which works for the Real Time Clock (RTC, Integrated into ASIC:IC1). The RTC continues functioning, even when the power switch is OFF, backed up by a lithium battery.
  • Page 20 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.3.6. Supervision Circuit for the Thermal Head Temperature 1. Function The thermistor changes the resistor according to the temperature and uses the thermistor's characteristics. The output of pin 139 of IC1 becomes a low level. Then when it becomes a high level, it triggers point A. In point C, according to the voltage output time, the thermal head's temperature is detected.

  • Page 21: Facsimile Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.4. Facsimile Section 6.4.1. Image Data Flow During Facsimile Operation Copy (Fine, Super-Fine, Photo) 1. Line information is read by CIS (to be used as the reference white level) via route (1), and is input to IC1. Refer to Block Dia- gram (P.22)

  • Page 22: Block Diagram

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.4.2. Block Diagram...

  • Page 23: Thermal Head

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.4.3. Thermal Head 1. Function This unit utilizes state of the art thermal printer technology. The recording paper (roll paper) is chemically processed. When the thermal head contacts this paper it emits heat momen- tarily, and black dots (appearing like points) are printed on the paper. If this continues, letters and/or diagrams appear, and the original document is reproduced.
  • Page 24 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...
  • Page 25 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.4.4. Scanning Block The scanning block of this device consists of a control circuit and a contact image sensor made up of a celfoc lens array, a light source, and photoelectric conversion elements. When an original document is inserted and the start button pressed, pin 129 of IC1 goes to a low level and the transistor Q14 turns on.This applies voltage to the light source to light it.
  • Page 26 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.4.5. Stepping Motor Drive Circuit 1. Function One individual stepping motor is used for transmission and reception. It feeds the document or recording paper synchronized for reading or printing. 2. Circuit Operation During motor drive, ASIC IC1 pin 124 becomes a high level, and Q2 and Q1 go ON as a result. +24 V is supplied tothe motor coil.

  • Page 27: Sensors And Switches

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.5. Sensors and Switches All of the sensors and switches are shown below. Sensor Circuit Sensor Sensor or Switch Name Error Message (*1) Location DIGITAL Motor Position Sensor [CALL SERVICE] Cutter Position Sensor [PAPER JAMED]...
  • Page 28 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.5.1. Motor Position Sensor This sensor is a detection switch for recording the position of the CAM. Signal (IC1-119 pin) Home position Low level Other High level 6.5.2. Cutter Position Sensor (KX-FT984/KX-FT988 only) Signal (IC1-131 pin)
  • Page 29 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.5.4. Hook Sensor (SW102) When the handset is lifted, the switch turns ON, and the signal at pin 43 of IC1 becomes low. When the handset is returned, the switch turns OFF, and the signal at pin 43 of IC1 becomes high.
  • Page 30 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.5.6. Document Top Sensor (SW338) When a document is brought to the read position, the SW becomes ON, and the input signal of IC301-5 pin (Operation Board) becomes a low level. When there is no document at the read position, the SW becomes OFF, and the input signal of IC301-5 pin (Operation Board) becomes a high level.

  • Page 31: Modem Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.6. Modem Section 6.6.1. Function The unit uses a 1 chip modem (IC5) that serves as an interface between the control section for FAX transmission and reception and the telephone line. During a transmitting operation, the digital image signals are modulated and sent to the telephone line.
  • Page 32 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 3. Facsimile Call Time Series As shown in the following diagram, the facsimile call time series is divided into five phases. Phase A: Call setting Call setting can be manual/automatic. Phase B: Pre-message procedure Phase B is a pre-processing procedure and sequence for confirming the status of the terminal, transmission route, etc., and for terminal control.
  • Page 33 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6. Explanation of Communication and Compression Technology a. G3 Communication Signals (T. 30 Binary Process) For G3 Facsimile communication, this is the procedure for exchanging control signals between the sending and receiving machines both before and after transmission of image signals.
  • Page 34 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Bit No. DIS/DTC Receiver --- T.4 operation Receiver --- T.4 operation 11,12,13,14 Data signaling rate Data signaling rate 0,0,0,0 V.27 ter fall back mode 2400 bit/s, V.27 ter 4800 bit/s, V.27 ter 0,1,0,0 V.27 ter 1,0,0,0 V.29...
  • Page 35 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Bit No. DIS/DTC Reserved for future recording width capability. Extend field Extend field R8×15.4 lines/mm R8×15.4 lines/mm 300×300 pels/25.4 mm 300×300 pels/25.4 mm R16×15.4 lines/mm and/or 400×400 pels/25.4 mm R16×15.4 lines/mm and/or 400×400 pels/25.4 mm...
  • Page 36 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B b. Redundancy Compression Process Coding Mode This unit uses one-dimensional MH format.
  • Page 37 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.6.2. Modem Circuit Operation The modem (IC5) has all the hardware satisfying the CCITT standards mentioned previously. When the ASIC IC1 (61) is brought to a low level, the modem (IC5) is chip-selected and the resistors inside IC are selected by the select signals from ASIC (IC1) ADR0-ADR4.

  • Page 38: Ncu Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.7. NCU Section 6.7.1. General It is composed of bell detection circuit, pulse dial circuit, line amplifier, sidetone circuits. 6.7.2. Bell Detection Circuit 1. Circuit Operation The signal waveform for each point is indicated below. The signal (low level section) input to pin 19 of ASIC IC1 on the digital board.
  • Page 39 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.7.5. Line Amplifier and Side Tone Circuits 1. Circuit Operation The reception signal received as output from line transformer T101 is given as input to C108, R109 and IC101(2). Then it is input to the reception system at an amplifier gain of 2.5 dB from pin (2).
  • Page 40 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.7.6. Calling Line Identification Circuit (FSK) 1. Function This unit is compatible with the Caller ID service offered by your local telephone company. To use this feature, you must sub- scribe to a Caller ID service. The data for the caller ID from the telephone exchange is sent during the interval between the first and second rings of the bell signal.
  • Page 41 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.7.7. Calling Line Identification Circuit (DTMF) 1. Function This unit is compatible with the Caller ID service offered by your local telephone company. To use this feature, you must sub- scribe to a Caller ID service. The data for the Caller ID from the telephone exchange is sent before the first ring signal. The data from the telephone exchange is sent by DTMF signal.

  • Page 42: Its (Integrated Telephone System) And Monitor Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.8. ITS (Integrated Telephone System) and Monitor Section 6.8.1. General The general ITS operation is performed by the modem IC5. The alarm tone, the key tone, the calling tone and the beep are output from the ASIC IC1 (digital board).

  • Page 43: Atas (Automatic Telephone Answering System) Section (Kx-Ft988 Only)

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.10. ATAS (Automatic Telephone Answering System) Section (KX-FT988 only) 1. Function The ATAS main operation is performed by the special IC5 (MODEM). IC6 (FLASH MEMORY) control signals are input from ASIC IC1. a. Greeting/Message Recording b.

  • Page 44: Operation Board Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.11. Operation Board Section The unit consists of a LCD (Liquid crystal display), KEYs and LEDs (light-emitting diodes). They are controlled by the Gate Array (IC301) and ASIC (IC1: on the DIGITAL BOARD). The key matrix table is shown below.

  • Page 45: Lcd Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.12. LCD Section The Gate Array IC(IC301) works only for writing the ASCII code from the data bus (D4~D7). V0 is supplied for the crystal drive. R312, R313, R314 and R316 are density control resistors.

  • Page 46: Power Supply Board Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 6.13. Power Supply Board Section This power supply board uses the switching regulator method. [Input Circuit] The input current goes into the input rectifier circuit through the filter circuit. The filter circuit decreases the noise voltage and the noise electric field strength.
  • Page 47 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B The following is an overview of how the power supply unit is controlled. The control method of this power supply unit is pulse width modulation. When Q is ON, the energy is charged in the transfer primary coil according to E .
  • Page 48 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B [Surge Absorber Circuit] This circuit is for absorbing surge voltage generated by the transformer. [Control Circuit and Detecting Circuit] The control circuit amplifies the output with increased voltage detected in the error detecting circuit. Then it drives the main transis- tor.

  • Page 49: Location Of Controls And Components

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 7 Location of Controls and Components 7.1. Overview 7.2. Control Panel (1) Speaker (2) Document guides (3) Paper stacker (KX-FT984/KX-FT988 only) (4) Document feeder tray (5) Top cover (6) Document exit (7) Document entrance (8) Top cover release button (1) [CALLER ID] •...

  • Page 50: Installation Instructions

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 8 Installation Instructions (9) Station keys • To use one-touch dial feature. (10) [FAX/START] 8.1. Installation Space • To start sending or receiving a fax. The space required to install the unit is shown below.

  • Page 51: Connections

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 8.2. Connections 8.3. Installing the Recording Paper Important: 1. Open the top cover by pressing the top cover release but- • The unit will not function when there is a power failure. ton ( To make calls in emergency situations, you should con- nect a telephone that can function during a power fail- ure to the telephone line.

  • Page 52: Documents The Unit Can Send

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 8.4. Documents the Unit can Send 5. Close the top cover securely by pushing down on both sides. 6. For KX-FT982: Press [FAX/START], then tear off the excess paper by pulling it towards you. For KX-FT984/KX-FT988: Press [FAX/START] to cut the paper.

  • Page 53: Operating Instructions

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 9 Operating Instructions To select characters with dial keypad 9.1. Setting Logo Your logo will be printed on the top of each page sent from your unit. The logo can be your name or the name of your company.
  • Page 54 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B To change uppercase or lowercase letters Pressing the [ ] button will change to uppercase or lower- case letters alternately. 1. Press [2] 4 times. 2. Press [4] 3 times. 3. Press [ 4. Press [5] 3 times.

  • Page 55: Test Mode

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 10 Test Mode The codes listed below can be used to perform simple checks for some of the unit’s functions. When complaints are received from customers, they provide an effective tool for identifying the locations and causes of malfunctions. To do this, you set the Service mode (Refer to Operation Flow (P.59).) first, then operate the below test items.

  • Page 56: Dtmf Single Tone Transmit Selection

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Test Mode Type of Mode Code Function Operation after code input SENSOR TEST & Service Mode [8] [1] [5] If you enter this mode and operate sensor levers with your hands, the LCD display VOX TEST of the related sensor (or switch) turns ON / OFF.

  • Page 57: Button Code Table

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 10.2. Button Code Table Code Button Name Code Button Name Code Button Name FAX /START CALLER ID LOWER COPY STATION KEY 1 MONITOR / SP-PHONE STATION KEY 2 BROADCAST STATION KEY 3 HANDSET MUTE / MUTE...

  • Page 58: Print Test Pattern

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 10.3. Print Test Pattern 1. Platen roller 3. Thermal head 1 dot 2. Left margin / Top margin 4. Use this test pattern to confirm the platen roller timing.

  • Page 59: Service Mode

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 11 Service Mode The programming functions are used to program the various features and functions of the machine, and to test the machine. This facilitates communication between the user and the service man while programming the unit.
  • Page 60 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 11.1.3. Service Function Table Code Function Set Value Effective Default Remarks Range × 100 msec Pause time 001~600 ---------- Dial speed select 1: 10 pps 1, 2 ---------- 2: 20 pps VOX time (KX-FT988 only)
  • Page 61 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Code Function Set Value Effective Default Remarks Range × number of Remote turn-on ring number set 00~99 Sets the number of rings before the unit starts to rings receive a document in the TEL mode.
  • Page 62 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Code Function Set Value Effective Default Remarks Range History list ---------- Journal 2 list See Special Service Journal Report (P.80). Journal 3 list See Special Service Journal Report (P.80). × sec The time transmitting the false ring back...

  • Page 63: The Example Of The Printed List

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 11.2. The Example of the Printed List 11.2.1. User Mode (KX-FT982/KX-FT984) Note: The above values are the default values.
  • Page 64 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 11.2.2. User Mode (KX-FT988) Note: The above values are the default values.
  • Page 65 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 11.2.3. Service Mode Settings (KX-FT982/KX-FT984) Note: The above values are the default values. 11.2.4. Service Mode Settings (KX-FT988) Note: The above values are the default values.
  • Page 66 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 11.2.5. History Note: See the following descriptions of this report. Item No. (1) ~ (44) are corresponding to the listed items in Descriptions of the History Report (P.67).
  • Page 67 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 11.2.5.1. Descriptions of the History Report (1) SOFTWARE VERSION (23) NUMBER OF SENDING FLASH ROM version The number of pages sent. (2) SUM (24) NUMBER OF CALLER ID FLASH ROM internal data calculation. The number of times Caller ID was received.

  • Page 68: Troubleshooting Guide

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12 Troubleshooting Guide 12.1. Troubleshooting Summary After confirming the problem by asking the user, troubleshoot according to the instructions and observe the following precautions. 12.1.1. Precautions 1. If there is a problem with the print quality or the paper feed, first check if the installation space and the print paper meets the specifications, the paper selection lever/paper thickness lever is set correctly, and the paper is set correctly without any slack.

  • Page 69: Error Messages-Display

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.2. Error Messages-Display If the unit detects a problem, one or more of the following messages will appear on the display. The explanations given in the [ ] are for servicemen only. Refer to Translation Lists (P.10) for display.
  • Page 70 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B • A transmission error occurred. Try again. • The unit is too hot. Stop using the unit for a while and let the unit cool down.

  • Page 71: Error Messages-Report

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3. Error Messages-Report 12.3.1. Journal Report If a problem occurs during fax transmission or reception, one of the following messages will be printed on the sending and jour- nal reports. How to output the Journal Report 1.
  • Page 72 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Countermeasure...
  • Page 73 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B REFERENCE: Test Mode (P.55)
  • Page 74 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B REFERENCE: Test Mode (P.55)
  • Page 75 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B REFERENCE: Test Mode (P.55)
  • Page 76 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B REFERENCE: Test Mode (P.55)
  • Page 77 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...
  • Page 78 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...
  • Page 79 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B REFERENCE: Test Mode (P.55)
  • Page 80 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.2. Special Service Journal Report Journal 2 and Journal 3 shown below, which are special journals giving the additional detailed information about the latest 35 communications, can be printed by Service Code 881 or 882. Remote printing function for the journal reports (JOURNAL, JOURNAL 2 and JOURNAL 3) is also available for service technicians.
  • Page 81 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.2.1. Journal 2 Refer to JOURNAL 2 in Printout Example (P.82). Journal 2 displays the additional detailed information about the last 35 communications. Descriptions: (1) RCV. MODE Indicates which receive mode the unit was in when the unit received a fax message.
  • Page 82 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.2.2. Journal 3 Refer to JOURNAL 3 in Printout Example (P.82). Descriptions: (6) ENCODE (9) ERROR LINE(RX) Compression Code: MH/MR/MMR When an error occurs while receiving a fax, this shows the number of error lines.
  • Page 83 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...
  • Page 84 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.3. Communication Section Find the problem in the table shown below, and refer to the corresponding troubleshooting procedure in Defective Facsimile Section (P.85). Symptom Reference Content Possible cause 1 The paper is not fed properly when faxing.
  • Page 85 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.3.1. Defective Facsimile Section 12.3.3.1.1. Transmit Problem REFERENCE: (*1): Operation Panel Section (P.123) (*2): ADF (Auto Document Feed) Section (P.99) (*3): Maintenance (P.141) (*4): How to Remove the Gear Block and Separation Roller (P.135) (*5): How to Remove the Operation Board, LCD and Platen Roller (P.137)
  • Page 86 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.3.1.2. Sometime there is a transmit problem Note: • "596: Transmit level set" represents a service code. (Refer to Service Function Table (P.60).) • (*1): Refer to Translation Lists (P.10) for display.
  • Page 87 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.3.1.3. Receive Problem First confirm whether the recording paper is installed properly or not before starting troubleshooting. (Refer to "Remarks".) Note: "596: Transmit level set" represents a service code. (Refer to Service Function Table(P.60).) Remarks: Regarding the reception problem, we have investigated the conceivable causes in the flow chart except for the software-related errors.
  • Page 88 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.3.1.4. The unit can copy, but cannot transmit/receive REFERENCE: (*1): Test Mode (P.55) (*2): Analog Board Section (P.115)
  • Page 89 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.3.1.5. The unit can copy, but cannot either transmit/receive long distance or interna- tional communications The following two causes can be considered for this symptom. Cause 1: The other party is executing automatic dialing, the call has been received by this unit, and the CED or DIS signal response time is too long.
  • Page 90 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B (Causes and Countermeasures) Countermeasure Side Echo Communication Problem Example Countermeasure Service Code Sending side Some time is needed to compare the level Add a dummy signal to the beginning of Service code (521) of the receiving and sending signals for the the training signal.
  • Page 91 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Fig. c (Countermeasure by Changing the Interval Between CED and DIS) Fig. d (Countermeasure by Ignoring the 1st DIS) <TX side signal> <RX side signal> <Countermeasure> 2nd / 3rd DCS / Training & delayed CFR / FTT...
  • Page 92 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.3.3.1.7. How to record fax signal by using PC Recording FAX signal is one of the useful analysis measures to solve communication problems. The way of recording easily by using PC is shown as follows.

  • Page 93: Remote Programming

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.4. Remote Programming If, after the call is connected, the customer describes the situation and it is determined that the problem can be corrected by making parameter changes, this function makes it possible to change parameters such as the user code and service code from another fax (using DTMF tones).
  • Page 94 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.4.2. Program Mode Table Code Function Set Value Default Remote Set- ting Date and time dd/mm/yy hh:mm 01/01/08 Your logo --------- None Your FAX number --------- None Sending report 1: ERROR / 2: ON / 3: OFF...
  • Page 95 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Code Function Set Value Default Remote Set- ting LED test --------- --------- LCD test --------- --------- Document jam detection select 1: ON / 2: OFF Cutter selection (KX-FT984/KX-FT988 only) 1: ON / 2: OFF Key test...

  • Page 96: Troubleshooting Details

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5. Troubleshooting Details 12.5.1. Outline Troubleshooting is for recovering quality and reliability by determining the broken component and replacing, adjusting or clean- ing it as required. First, determine the problem then decide the troubleshooting method. If you have difficulty finding the broken part, determine which board is broken.
  • Page 97 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.3. Troubleshooting Items ITEM SYMPTOM REFERENCE No feed See No Document Feed (P.99) (Auto Document Feeder) Paper jam See Document Jam (P.100) Multiple feed See Multiple Feed (P.101) Skew See Skew (P.102) Printing Skewed receiving image.
  • Page 98 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B SERIAL NO. DATE FUNCTION JUDGEMENT REFERENCE Digital TAM Greeting REC / PLAY OK / NG (KX-FT988 only) Incoming message REC / PLAY OK / NG Memo REC / PLAY OK / NG Voice prompt OK / NG...
  • Page 99 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.4. ADF (Auto Document Feed) Section 12.5.4.1. No Document Feed REFERENCE: (*1): Multiple Feed (P.101) (*2): How to Remove the Operation Board, LCD and Platen Roller (P.137) (*3): Test Mode (P.55) (*4): Digital Board Section (P.107) (*5): Sensor Section (P.124)

  • Page 100: Document Jam

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.4.2. Document Jam REFERENCE: (*1): Test Mode (P.55) (*2): Sensor Section (P.124) (*3): How to Remove the Operation Board, LCD and Platen Roller (P.137) (*4): Disassembly and Assembly Instructions (P.129)
  • Page 101 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.4.3. Multiple Feed REFERENCE: (*1): How to Remove the Separation Rubber Flap (P.138) (*2): Disassembly and Assembly Instructions (P.129) (*3): Maintenance (P.141)
  • Page 102 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.4.4. Skew REFERENCE: (*1): Maintenance Items and Component Locations (P.141) (*2): Disassembly and Assembly Instructions (P.129) (*3): How to Remove the Separation Rubber Flap (P.138) (*4): How to Remove the Operation Board, LCD and Platen Roller (P.137)
  • Page 103 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.4.5. Image is Distorted (When printing) REFERENCE: (*1): Test Mode (P.55) (*2): Thermal Head Section (P.127). (*3): Maintenance Items and Component Locations (P.141) (*4): Disassembly and Assembly Instructions (P.129) (*5): How to Remove the Operation Board, LCD and Platen Roller (P.137)
  • Page 104 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.4.6. Black or White Vertical Lines Appear REFERENCE: (*1): Test Mode (P.55) (*2): How to Remove the Lock Lever and Thermal Head (P.132) (*3): Maintenance Items and Component Locations (P.141) (*4): How to Remove the Operation Board, LCD and Platen Roller (P.137) (*5): How to Remove the Image Sensor (CIS) and Feed Roller (P.130)
  • Page 105 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.4.8. When Coping or Printing, an Abnormal Sound is Heard from the Unit REFERENCE: (*1): Document Feeder/Scanner Glass Cleaning (P.150) (*2): Thermal Head Cleaning (P.151) (*3): Disassembly and Assembly Instructions (P.129) (*4): How to Remove the Motor of Gear Block (P.135)
  • Page 106 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.5. Communication Section Find the problem in the table shown below, and refer to the corresponding troubleshooting procedure in Defective Facsimile Section (P.85). Symptom Content Possible cause The paper is not fed properly when faxing.

  • Page 107: Digital Board Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.6. Digital Board Section When the unit fails to boot up the system, take the troubleshooting procedures very carefully. It may have a serious problem. The symptom: No response when the power is turned on. (No LCD display, and keys are not accepted.) The first step is to check the power source.
  • Page 108 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Digital Block Diagram Digital board is including analog system. All analog signals (Telephone, CID and TAM) excepting Fax communications. Another one is ASIC system for mechanical functions: Copy, Fax and UI (LCD/Key). And serial interface (UART) connects both systems.
  • Page 109 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B NG Wave pattern Note: Refer to NG Example (P.114).
  • Page 110 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Normal Wave Patterns Remarks: When you use an oscilloscope to judge whether a signal to be tested is normal or NG, perform the signal check in exactly the same order as in [List 1]. (If the ASIC fails to access the ROM, the ASIC cannot access DRAM normally.) The digital circuit actually operates according to the timing combinations of these signals.
  • Page 111 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B I/O and Pin No. Diagram...
  • Page 112 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.6.1. Check the Status of the Digital Board After the power is turned on, the ASIC initializes and checks each IC. The ROM, DRAM, and modem are checked. If initialization fails for the ICs, the system will not boot up.
  • Page 113 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Other NG example while the power is ON and the LCD displays the following. Refer to Translation Lists (P.10) for display.
  • Page 114 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.6.2. NG Example...
  • Page 115 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.7. Analog Board Section This chapter provides the testing procedures required for the analog parts. A signal route to be tested is determined depending upon purposes. For example, the handset TX route begins at the handset microphone and the signal is output to the telephone line.
  • Page 116 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...
  • Page 117 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.7.2. Defective ITS (Integrated Telephone System) Section 1. No handset and monitor transmission / reception Following the ITS section or NCU section, search for the route between the microphone and the telephone line (sending) or between the telephone line and the speaker (receiving) where the signal disappears.
  • Page 118 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.8. Digital Speakerphone (KX-FT988 only) The digital speakerphone has different features from the analog speakerphone. The analog speakerphone switches between Tx or Rx. Either Tx or Rx is able to pass through a telephone line or speaker, depending on the Tx and Rx signal (voice) level.
  • Page 119 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Note: Check to the SP-Phone Rx/Tx signal routes. (Refer to Check Sheet for Signal Route (P.115)).
  • Page 120 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.9. Power Supply Board Section 12.5.9.1. Key Components for Troubleshooting Check the following parts first: F101, D101-D104, C106, Q101and IC101. This comes from our experience with experimental tests. For example: power supply and lightning surge voltage test, withstanding voltage test, intentional short circuit test, etc.
  • Page 121 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.9.2. Troubleshooting Flow Chart...
  • Page 122 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.9.3. Broken Parts Repair Details (ZNR101, C106) Check for a short-circuit in terminals. Visually check these parts for damages. (D101, D102, D103, D104) Check for a short-circuit in terminal 4. If D101, D102, D103 and D104 are short-circuits, F101 will melt (open).
  • Page 123 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.10. Operation Panel Section 12.5.10.1. No Key Operation REFERENCE: Test Mode (P.55) 12.5.10.2. No LCD Indication REFERENCE: Test Mode (P.55)
  • Page 124 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.11. Sensor Section Refer to Sensors and Switches (P.27) for the circuit descriptions. The Test Function makes the sensor circuit check easier. (Refer to Test Mode (P.55).) For example, as for "COVER OPEN SENSOR", "CO" is turned ON/OFF on the display when you open or close the front cover.
  • Page 125 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.11.4. Check the Document Top Sensor (SW338) 12.5.11.5. Check the Document Set Sensor (SW339) 12.5.11.6. Check the Motor Position Sensor (CN5) Sensor is Ref No.183. Refer to Gear Block Section (P.184). 12.5.11.7. Check the Cutter Position Sensor (CN6) (KX-FT984/KX-FT988 only)
  • Page 126 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.12. CIS (Contact Image Sensor) Section Refer to Scanning Block (P.25). REFERENCE: Test Mode (P.55)
  • Page 127 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 12.5.13. Thermal Head Section Refer to Thermal Head (P.23).

  • Page 128: Service Fixture & Tools

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 13 Service Fixture & Tools...

  • Page 129: Disassembly And Assembly Instructions

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14 Disassembly and Assembly Instructions Note: Please remove the Paper Stacker (KX-FT984/KX-FT988 only) and Recording Paper before disassembling.

  • Page 130: Upper Cabinet Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.1. Upper Cabinet Section 14.1.1. How to Remove the Image Sensor (CIS) and Feed Roller...
  • Page 131 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.1.2. How to Remove the Cutter Unit (KX-FT984/KX-FT988 only)
  • Page 132 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.1.3. How to Remove the Lock Lever and Thermal Head...

  • Page 133: Lower Cabinet Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.2. Lower Cabinet Section 14.2.1. How to Remove the Bottom Frame...
  • Page 134 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.2.2. How to Remove the P. C. Boards and Power Cord...
  • Page 135 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.2.3. How to Remove the Gear Block and Separation Roller 14.2.4. How to Remove the Motor of Gear Block...

  • Page 136: Operation Panel Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.3. Operation Panel Section 14.3.1. How to Remove the Operation Panel Block...
  • Page 137 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.3.2. How to Remove the Operation Board, LCD and Platen Roller...
  • Page 138 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.3.3. How to Remove the Separation Rubber Flap...

  • Page 139: Installation Position Of The Lead Wires

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 14.4. Installation Position of the Lead Wires...
  • Page 140 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...

  • Page 141: Maintenance

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15 Maintenance 15.1. Maintenance Items and Component Locations 15.1.1. Outline MAINTENANCE AND REPAIRS ARE PERFORMED USING THE FOLLOWING STEPS. 1. Periodic maintenance Inspect the equipment periodically and if necessary, clean any contaminated parts. 2. Check for breakdowns Look for problems and consider how they arose.
  • Page 142 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.1.3. Maintenance List Operation Check Remarks Document Path Remove any foreign matter such as paper. ---------- Rollers If the roller is dirty, clean it with a damp cloth then dry thoroughly. Refer to How to Remove the Image Sensor (CIS) and Feed Roller (P.130).

  • Page 143: Gear Section

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.2. Gear Section This section shows how the motor-driven gear mechanism works in the main operations: FAX transmission, FAX reception the motor and copying. 15.2.1. Mode Selection When the motor attached to the Drive Motor Gear rotates counterclockwise (CCW), Swing Gear A engages the CAM and the CAM turns counterclockwise to select a mode.
  • Page 144 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.2.2. Mode Operation Once a mode is selected, the Drive Motor Gear rotates clockwise (CW) and then the Swing Gear A-1 controls the mode opera- tion. 15.2.2.1. TX Mode Swing Gear A engages Gear TX and conveys its drive power to the Separation Roller Gear for pre-feeding documents.

  • Page 145: Copy Mode

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.2.2.3. Copy Mode Swing Gear A and B engage Gear TX and Gear RX respectively and drive both the Separation Roller Gear and the Platen Roller Gear for feeding documents and recording paper in the copying operation.
  • Page 146 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.2.2.5. Cutter Mode (KX-FT984/KX-FT988 only) Swing gear C engages the gear cutter and conveys its drive power to cutter unit for cutting recording paper. Fig. F: Cutter mode 15.2.3. Mechanical Movements in the Main Operations...
  • Page 147 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.2.3.2. Scanning 15.2.3.3. Printing REFERENCE: Sensor Section (P.124) Note: See Sensors and Switches (P.27)
  • Page 148 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.2.3.4. Copying REFERENCE Sensor Section (P.124)

  • Page 149: Jams

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.3. Jams 15.3.1. Recording Paper Jams 5. Install the recording paper and close the top cover securely by pushing down on both sides. 1. Open the top cover by pressing the top cover release but- (See page Installing the Recording Paper (P.51))

  • Page 150: Cleaning

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.4. Cleaning 15.3.2. Document Jams Sending 1. Open the top cover by pressing the top cover release but- 15.4.1. Document Feeder/Scanner Glass ton ( ) and remove the jammed document carefully Cleaning Clean the document feeder when: —...

  • Page 151: Thermal Head Cleaning

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 15.4.2. Thermal Head Cleaning sides, then press [FAX/START]. If smudges or black/white lines appear on a copied/received document, check whether there is dust on the thermal head. Clean it to remove the dust. 1. Disconnect the power cord and the telephone line cord.

  • Page 152: Miscellaneous

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 16 Miscellaneous 16.1. Terminal Guide of ICs Transistors and Diodes 16.1.1. Digital Board 16.1.2. Analog Board 16.1.3. Operation Board...

  • Page 153: Power Supply Board

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 16.1.4. Power Supply Board...

  • Page 154: How To Replace The Flat Package Ic

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 16.2. 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 155: Test Chart

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 16.3. Test Chart 16.3.1. ITU-T No.1 Test Chart...
  • Page 156 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 16.3.2. ITU-T No.2 Test Chart...
  • Page 157 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B MEMO...

  • Page 158: Schematic Diagram

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 17 Schematic Diagram 17.1. Digital Board (PCB1): KX-FT982/KX-FT984...
  • Page 159 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...
  • Page 160 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...
  • Page 161 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...

  • Page 162: Digital Board (Pcb1): Kx-Ft988

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 17.2. Digital Board (PCB1): KX-FT988...
  • Page 163 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...
  • Page 164 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...
  • Page 165 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B...

  • Page 166: Analog Board (Pcb2)

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 17.3. Analog Board (PCB2) +5VA JJ109 +5VA PC104 +2.5V PC101 R149 Q108 C142 R158 D113 Q103 IC101 Q107 C104 560p R106 R109 T101 C108 100n R110 C109 +2.5VL +2.5V 100n IC101 L104 R107 R112 R113 5.6k...
  • Page 167 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B FAX TX signal FAX RX signal D109 D107 D108 C140 C141 R155 PC103 POS101 L111 TO TEL LINE C122 R127 L112 RLY101 CN103 120 2W R131 Q106 R153 JJ105 C136 L113 TO EXT. LINE D104...

  • Page 168: Operation Board (Pcb3/Pcb203)

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 17.4. Operation Board (PCB3/PCB203)

  • Page 169: Power Supply Board (Pcb4)

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 17.5. Power Supply Board (PCB4)
  • Page 170 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B MEMO...

  • Page 171: Printed Circuit Board

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 18 Printed Circuit Board 18.1. Digital Board (PCB1) 18.1.1. Component View...
  • Page 172 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 18.1.2. Bottom View C103 C102 EYCLK IC11 +3.3V/BAT IC15 +3.3VD RESET...

  • Page 173: Analog Board (Pcb2)

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 18.2. Analog Board (PCB2) 18.2.1. Component View CN103 SW101 C128 C101 C127 SW103 C102 D101 J115 PC101 J127 CN101 J123 C113 JJ106 J117 J103 JJ105 AUTO-CH R133 J118 J128 R159 J101 C139 PCB-CH C125 J107...
  • Page 174 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 18.2.2. Bottom View D111 Q105 Q103 Q101 Q104 IC101 Q107 D109 Q112 Q106 D110 KX-FT982LS / KX-FT984LS / KX-FT988LS: Analog Board (Bottom View)

  • Page 175: Operation Board (Pcb3/Pcb203)

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 18.3. Operation Board (PCB3/PCB203) 18.3.1. Component View MIC- MIC+...
  • Page 176 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 18.3.2. Bottom View R308 R306 R302 R301 C309 R304 C305 C301 R307 C306 C302 R318 C310 C307 R303 C304 C311 R305 C308 C309 R310 R314 R311 R317 R319 R314 R320 R313 R312 R321 R322 C313...

  • Page 177: Power Supply Board (Pcb4)

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 18.4. Power Supply Board (PCB4) C102 L103 JP104 D107 R110 JP103 R105 C109 C111 JP105 JP102 L102 D105 L201 D201 C211 JP206 JP205 JP204 C201 R230 C217 JP207 CN202...

  • Page 178: Appendix Information Of Schematic Diagram

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 19 Appendix Information of Schematic Diagram Note: 1. DC voltage measurements are taken with an oscilloscope or a tester with a ground. 2. The schematic diagrams and circuit board may be modified at any time with the development of new technology.

  • Page 179: Exploded View And Replacement Parts List

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20 Exploded View and Replacement Parts List 20.1. Cabinet and Mechanical Parts Location...
  • Page 180 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20.1.1. Operation Panel Section (KX-FT982/KX-FT984)
  • Page 181 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20.1.2. Operation Panel Section (KX-FT988)
  • Page 182 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20.1.3. Upper Cabinet Section...
  • Page 183 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20.1.4. Lower Cabinet Section...
  • Page 184 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20.1.5. Gear Block Section...
  • Page 185 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20.1.6. Screws...

  • Page 186: Accessories And Packing Materials

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20.1.7. Accessories and Packing Materials...

  • Page 187: Replacement Parts List

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20.2. Replacement Parts List Safe Ref. Part No. Part Name & Description Remark Notes: PFDN1077Z ROLLER, PLATEN 1. The “RTL” marking indicates that its Retention Time is PFUV1088Z2 COVER, DOCUMENT GUIDE PS HB PFDG1015Y GEAR, SLIDER Limited.
  • Page 188 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B 20.2.1.3. Upper Cabinet Section 20.2.1.5. Gear Block Section Note: (*1)..KX-FT984/KX-FT988 only Safe Ref. Part No. Part Name & Description Remar PNGT1326Z-M NAME PLATE (for KX-FT982) Safe Ref. Part No. Part Name & Description Remark PNGT1325Z-M...

  • Page 189: Digital Board Parts

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Safe Ref. Part No. Part Name & Description Remark Safe Ref. Part No. Part Name & Description Remar PNZE1006Z-M GIFT BOX (for KX-FT982) J0JCC0000288 COIL PNZE1028Z-M GIFT BOX (for KX-FT984) J0JCC0000288 COIL PNZE1047Z-M GIFT BOX (for KX-FT988)
  • Page 190 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Safe Ref. Part No. Part Name & Description Remar Safe Ref. Part No. Part Name & Description Remar ERJ2GEJ124 120k ECUE1A104KBQ 0.1 ERJ2GEJ273X ECUE1C104ZFQ 0.1 ERJ2GEJ473 ECUE1C223KBQ 0.022 ERJ2GEJ335 3.3M ECUE1H102KBQ 0.001 ERJ2GEJ272 2.7k ECUV1H104ZFV 0.1 ERJ2GEJ333 ECUE1A104KBQ 0.1...
  • Page 191 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Safe Ref. Part No. Part Name & Description Remark Safe Ref. Part No. Part Name & Description Remark (COILS) ERJ2GEJ821 J0JCC0000288 COIL ERJ2GEJ124 120k J0JCC0000288 COIL ERJ2GEJ273X ERJ2GEJ473 (FUSE) ERJ2GEJ335 3.3M K5H122Y00002 FUSE ERJ2GEJ272 2.7k...

  • Page 192: Analog Board Parts

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Safe Ref. Part No. Part Name & Description Remark Safe Ref. Part No. Part Name & Description Remark ECUE1C104ZFQ 0.1 L114 PQLQR2KA20T COIL (KX-FT982/KX-FT984 only) ECUV1A105ZFV 1 ECUE1C104ZFQ 0.1 (PHOTO ELECTRIC TRANS- ECUE1C104ZFQ 0.1 DUCER)

  • Page 193: Operation Board Parts

    KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Safe Ref. Part No. Part Name & Description Remark Safe Ref. Part No. Part Name & Description Remar C132 ECUV1H103KBV 0.01 (RESISTORS) C134 ECEA0JKA470 R303 ERJ3GEYJ181 C135 ECUV1H103KBV 0.01 R304 ERJ3GEYJ332 3.3k C136 F0C2E105A216 1...
  • Page 194 KX-FT982LS-B / KX-FT984LS-B / KX-FT988LS-B Safe Ref. Part No. Part Name & Description Remar ZNR101 ERZV10D751 VARISTOR (RESISTORS) R105 ERX2SJR22E 0.22 R110 ERDS2TJ470 R111 ERDS2TJ150 R112 ERJ3GEYJ101 R222 ERJ3GEYJ102 (CAPACITOR) C106 EEUGH2W470U KXFT982LSB, KXFT984LSB, KXFT988LSB...

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