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Panasonic KX-TG9331BXT Service Manual

Expandable digital cordless answering system
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Telephone Equipment
KX-TG9331BXT
Model No.
KX-TGA931BXT
KX-TGA930BXT
Expandable Digital Cordless Answering
System
Titanium Black Version
(for Middle Near East and Africa)
© 2008 Panasonic Communications Co., Ltd. All
rights reserved. Unauthorized copying and distribu-
tion is a violation of law.
ORDER NO. KM40804559CE

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Summary of Contents for Panasonic KX-TG9331BXT

  • Page 1 Telephone Equipment KX-TG9331BXT Model No. KX-TGA931BXT KX-TGA930BXT Expandable Digital Cordless Answering System Titanium Black Version (for Middle Near East and Africa) © 2008 Panasonic Communications Co., Ltd. All rights reserved. Unauthorized copying and distribu- tion is a violation of law.
  • Page 2 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT...

  • Page 3: Table Of Contents

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions----------------------------------------------- 4 15.1. CPU Data (Base Unit) ---------------------------------- 99 1.1. For Service Technicians --------------------------------- 4 15.2. CPU Data (Handset) ---------------------------------- 100 2 Warning -------------------------------------------------------------- 4 15.3. Explanation of IC Terminals (RF Part) ------------ 101 2.1.

  • Page 4: Safety Precautions

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 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 pre- vent fires, injury or electric shock, which can be caused by improper repair work.

  • Page 5: Discarding Of P. C. Board

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 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 manufac- turer's specific instructions for the melting points of their products and any precautions for using their product with other materi- als.

  • Page 6: Specifications

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 3 Specifications Note: • Design and specifications are subject to change without notice.

  • Page 7: Technical Descriptions

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4 Technical Descriptions 4.1. US-DECT Description The frequency range of 1.92 GHz-1.93 GHz is used. Transmitting and receiving carrier between base unit and handset is same fre- quency. Refer to Frequency Table (P.77). 4.1.1. TDD Frame Format 4.1.2. TDMA system This system is the cycles of 10 ms, and has 6 duplex paths, but maximum duplex communication path is 5 because of dummy bearer use.
  • Page 8 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.1.3. Signal Flowchart in the Radio Parts Reception A voice signal from TEL line is encoded to digital data "TXDATA" by DSP (IC501) in a base unit. Then TXDATA goes to RF PART, and it's modulated to 1.9 GHz. The RF signal is amplified and fed to a selected antenna.

  • Page 9: Block Diagram (Base Unit_Main)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.2. Block Diagram (Base Unit_Main)

  • Page 10: Block Diagram (Base Unit_Rf Part)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.3. Block Diagram (Base Unit_RF Part)

  • Page 11: Circuit Operation (Base Unit)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.4. Circuit Operation (Base Unit) General Description: (DSP, Flash Memory) 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 answering machine. The DSP system is fully controlled by a host processor DSP. The host processor provides activation and control of all that func- tions as follows.
  • Page 12 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.4.3. Power Supply Circuit Function: The power supply voltage from AC adaptor is converted to the desired voltage of each block. Circuit Operation: • Q300 and IC300: 4.0 V DCDC Converter • IC331: 3.3 V Regulator...
  • Page 13 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.4.3.1. Charge Circuit The voltage from the AC adaptor is supplied to the charge circuits.
  • Page 14 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.4.4. Reset Circuit Function: This circuit is used to initialize the microcomputer when it incorporates an AC adaptor. Circuit Operation: When the AC Adaptor is inserted into the unit, then the voltage is shifted by IC331 and power is supplied to the DSP.
  • Page 15 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.4.5. 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 16 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.4.6. Auto Disconnect Circuit Function: This circuit is used to detect the fact that another telephone connected to the same line is OFF-HOOK while the unit is in a receiving status or OGM transmitting status. Circuit Operation: The voltage of pin 90 of IC501 is monitored. If a parallel-connected telephone is put into OFF HOOK status, the presence/ absence of a parallel connection is determined when the voltage changes by 0.2 V or more.
  • Page 17 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.4.7. 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 con- nected in parallel is on hook or off hook by detecting changes in the T/R voltage.
  • Page 18 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.4.8. Calling Line Identification (Caller ID)/Call Waiting Caller ID Function: The caller ID is a chargeable ID which the user of a telephone circuit obtains by entering a contract with the telephone company to utilize a caller ID service. For this reason, the operation of this circuit assumes that a caller ID service contract has been entered for the circuit being used.

  • Page 19: Block Diagram (Handset)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.5. Block Diagram (Handset) IC541 ANT1 ANT2 X501 EEPROM 13.824 MHz Q531 CHG_DET CHARGE DETECT Q362, Q364 RF part CHARGE CHG_CTL CONTROL SYN_OUT SYN_EN SYN_CLK RESET SYN_DATA Q361 SLOT_CTROL D361 CHARGE RADIO_EN IC374 TXDATA RXDATA IC371 2.7 V V_PA...

  • Page 20: Block Diagram (Handset_Rf Part)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.6. Block Diagram (Handset_RF Part)

  • Page 21: Circuit Operation (Handset)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.7. Circuit Operation (Handset) 4.7.1. Construction The circuit mainly consists of DSP and RF part as shown in the block diagram. 4.7.1.1. DSP: IC501 Function • Battery Low, Power down detect circuit • Ringer Generation • Interface circuit RF part, Speaker, Mic, LED, Key scan, LCD, Headset...
  • Page 22 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.7.2. Power Supply Circuit Voltage is supplied separately to each block.
  • Page 23 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.7.3. Charge Circuit When the handset is put on the cradle of the base unit, the power is supplied from CHARGE+ and CHARGE- terminals to charge the battery via R366 or Q361. The voltage between CHARGE+ and CHARGE- flows Q531 → pin 38 of IC501, where the charge is detected.
  • Page 24 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.7.5. Sending Signal The voice signal from the microphone is input to DSP (90, 91). CN431 is the headset jack. When the headphone is connected, the R436/R437 detects it. The input from the microphone of the handset (MIM, MIP) is cut and the microphone signal from the headset is input to DSP (95).

  • Page 25: Circuit Operation (Rf Part)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.8. Circuit Operation (RF Part) General Description: RF part includes Transmitter and Receiver functions. Digital signals (Mainly voice data) that come from DSP, are modulated and are transmitted. On the other hand, received signals are demodulated and go out to DSP.
  • Page 26 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.9. Circuit Operation (Charger Unit) The voltage from the AC adaptor is supplied to the charge circuits. Main charge (180~250 mA at the Battery) of maximum 7- hours is started soon after the handset is placed on the charger unit. Then it changes to Trickle charge to prevent from over- charging.

  • Page 27: Signal Route

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.10. Signal Route...
  • Page 28 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT RF part signal route...

  • Page 29: Location Of Controls And Components

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 5 Location of Controls and Components 5.1. Controls 5.1.2. Handset 5.1.1. Base Unit 5.2. Display...

  • Page 30: Installation Instructions

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 6 Installation Instructions 6.1. Connections 6.2. Battery 6.2.1. Battery Installation and Replacement...
  • Page 31 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 6.2.2. Battery Charge 6.2.4. Panasonic Ni-MH Battery Perfor- mance (supplied batteries) 6.2.3. Battery Level...

  • Page 32: Operating Instructions

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 7 Operating Instructions 7.1. Programmable Settings 7.1.1. Programming by Scrolling through the Display Menus...
  • Page 33 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 7.1.2. Programming using the Direct Commands...
  • Page 34 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT...
  • Page 35 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 7.2. Dial lock For Service Hint: *: If the current password is forgotten, refer to Dial lock in Troubleshooting (P.37).

  • Page 36: Error Messages

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 7.3. Error Messages...

  • Page 37: Troubleshooting

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 7.4. Troubleshooting...
  • Page 38 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT...
  • Page 39 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT...
  • Page 40 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT...

  • Page 41: Test Mode

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 8 Test Mode 8.1. Adjustment and Test Mode Flow Chart 8.1.1. TX-CW Mode for Base Unit Note: (*1) Refer to Check Table for RF part (P.58).
  • Page 42 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 8.1.2. Test Link Mode for Base Unit Note: (*1) Refer to Test Link Mode for Handset (P.46). If you can not proceed to the next step, refer to Registering a Handset to a Base Unit (P.56). (*2) Refer to Check Table for RF part (P.58).
  • Page 43 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 8.1.3. Adjustment Mode for Base Unit Cross Reference Check and Adjust Frequency (Base Unit) (P.74)
  • Page 44 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 8.1.4. TX-CW Mode for Handset Note: (*1) LCD displays the Channel number. (exception: default/ CH00 = 0ch.) (*2) Refer to Check Table for RF part (P.58).
  • Page 45 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 8.1.5. RX-CW Test Mode for Handset Note: (*1) LCD displays the Channel number. (exception: default/ CH00 = 0ch.) (*2) Refer to Check Table for RF part (P.58).
  • Page 46 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 8.1.6. Test Link Mode for Handset Note: (*1) LCD displays the Channel number. (exception: default/ CH00 = 0ch.) (*2) If can not proceed to the next step, refer to Registering a Handset to a Base Unit (P.56). (*3) for factory use only.
  • Page 47 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 8.1.7. Adjustment Mode for Handset Cross Reference (*1) Adjust Battery Low Detector Voltage (Handset) (P.74) Note: (*2) These are the default values. (*3) These values may not be fixed depending on the battery strength.

  • Page 48: Service Mode

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 9 Service Mode 9.1. 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.). This operation should not be performed for a usual repair.
  • Page 49 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 9.1.2. Handset Note: (*1) Be sure to short the battery terminals of the handset with a lead wire, etc. for 2 seconds for discharge after removing the battery.

  • Page 50: Troubleshooting Guide

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10 Troubleshooting Guide 10.1. Troubleshooting Flowchart Cross Reference: Note: Check Power (P.51) (*1) When a user claims that the unit disconnects a call right Check Playback (P.53) after the greeting message and no incoming messages can Check Record (P.52) be recorded, this symptom can not be reappeared with TEL Check Battery Charge (P.53)
  • Page 51 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.1. Check Power Cross Reference: Note: Power Supply Circuit (P.12) Flash Memory is IC601. Reset Circuit (P.14) DSP is IC501. (*1) Refer to Specifications (P.6) for part number and sup- ply voltage of AC adaptor. (*2) Refer to Circuit Board (Base Unit_Main) (P.89).
  • Page 52 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.2. Check Record BASE UNIT A) Not record Greeting Message B) Not record Incoming Message C) How to change the Auto Disconnect activation (time) Some Telephone Company lines (fiber or cable) ON Hook and OFF Hook voltages are lower than conventional lines, which may cause a malfunction of Auto Disconnect detection.
  • Page 53 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.3. Check Playback Cross Reference: Note: Power Supply Circuit (P.12) Flash Memory is IC601. DSP is IC501. (*1) Refer to Circuit Board (Base Unit_Main) (P.89). 10.1.4. Check Battery Charge Note: Flash Memory is IC601. (*1) Refer to Specifications (P.6) for part number and supply voltage of AC adaptor.
  • Page 54 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.5. Check Link Cross Reference: Note: Check the RF part (P.55) Flash Memory is IC601. DSP is IC501. (*1) Refer to Finding out the Defective part (P.55).
  • Page 55 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.6. Check the RF part 10.1.6.1. Finding out the Defective part After All the Checkings or Repairing 1. Re-register the checked handset to the checked base unit, and Regular HS to Regular BU. Note: (*1) HS: Handset (*2) BU: Base Unit...
  • Page 56 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.6.1.1. Registering a Handset to a Base Unit 10.1.6.1.2. Deregistering a Handset 10.1.6.1.3. Deregistering All Handsets by the Base Unit...
  • Page 57 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.6.2. RF Check Flowchart Each item (1 ~ 6) of RF Check Flowchart corresponds to Check Table for RF part (P.58). Please refer to the each item. Note: (*1) Refer to Things to Do after Replacing IC or X’tal (P.74).
  • Page 58 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.6.3. 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 59 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.6.4. TEST RANGE Check Circuit block which range is defective can be found by the following check. Item BU (Base Unit) Check HS (Handset) Check Range Confirmation TX TEST 1. Register Regular HS to BU (to be checked). 1. Register HS (to be checked) to Regular BU.
  • Page 60 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.6.5. RF-DSP Interface Signal Wave Form Control signal for Base Unit (Normal mode) Control signal for Base Unit (Normal mode) RADEOEN 2 ms SLOT_CTRL SYN_DATA SYN_CLK SYN_EN Zoom 1 µs 1 us 1 us 1 us SYN_DATA SYN_CLK SYN_EN...
  • Page 61 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT Base Unit TR-DATA Signal (Normal mode) Base Unit TR-DATA Signal (Normal mode) Base unit sends a dummy slot and receves all 6 slots every frame in normal mode. Pin Number (Base unit) ITEM MODE IC701 IC501 (BU) [HS] or [REG HS]...
  • Page 62 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.1.7. Check Handset Transmission Cross Reference: Signal Route (P.27) 10.1.8. Check Handset Reception Cross Reference: Signal Route (P.27) Note: When checking the RF part, Refer to Check the RF part (P.55). 10.1.9. Check Caller ID Cross Reference: Telephone Line Interface (P.15) Calling Line Identification (Caller ID)/Call Waiting Caller ID (P.18)

  • Page 63: How To Replace The Flat Package

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.2. How to Replace the Flat Package IC 10.2.1. 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. 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 64 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.2.3. 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 65: How To Replace The Llp

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.3. How to Replace the LLP (Leadless Leadframe Package) IC 10.3.1. 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 66 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.3.4. 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. : PNMC1002Z 1. Put the shield case. 2. Solder the surroundings.
  • Page 67 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 10.3.6. 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. 2. Place the solder a little on the land where IC pins are to be attached, then place the IC.

  • Page 68: Disassembly And Assembly Instructions

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 11 Disassembly and Assembly Instructions 11.1. Disassembly Instructions 11.1.1. Base Unit...
  • Page 69 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT...
  • Page 70 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 11.1.2. Handset...
  • Page 71 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 11.1.3. Charger Unit...

  • Page 72: How To Replace The Handset Lcd

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 11.2. How to Replace the Handset LCD...
  • Page 73 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT...

  • Page 74: Measurements And Adjustments

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 12 Measurements and Adjustments 12.1. Things to Do after Replacing IC or X’tal 12.1.1. Preparation Equipment: Frequency counter Check Point for measurement: BCK Checking tolerance: 13.824 MHz ± 100 Hz (Base Unit)/13.824 MHz ± 100 Hz (Handset) 12.1.2. Check and Adjust Frequency (Base Unit) 1.

  • Page 75: Base Unit Reference Drawing

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 12.2. Base Unit Reference Drawing When connecting the simulator equipment for checking, please refer to below. 6.5 V ANT2_HOT Spectrum Analyzer ANT1_HOT POWER DCP2 ANT1_GND ANT2_GND RING DCM2 C-POWER C757 BCLK BCLK Frequency Counter (*1) R612 R611 DVCC C601...

  • Page 76: Handset Reference Drawing

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 12.3. Handset Reference Drawing When connecting the simulator equipment for checking, please refer to below. Note: (*1) is referred to No.3 of Check Table for RF part (P.58).

  • Page 77: Frequency Table

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 12.4. Frequency Table Ch. (hex) TX/RX Frequency (MHz) Channel 0 1928.448 Channel 1 1926.720 Channel 2 1924.992 Channel 3 1923.264 Channel 4 1921.536...

  • Page 78: Schematic Diagram

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 13 Schematic Diagram 13.1. For Schematic Diagram 13.1.1. Base Unit (Schematic Diagram (Base Unit_Main)) 13.1.1.1. Acoustic Testing Mode 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 79 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT Memo...

  • Page 80: Schematic Diagram (Base Unit_Main)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 13.2. Schematic Diagram (Base Unit_Main) RF interface 3.2V Q382 V_PA V_PA (VPA) V_RF V_RF 3.3V 4.0V BCLK C521 0.1u BCLK R521 SYN_OUT SYN_OUT SYN_EN SYN_EN SYN_CLK SYN_CLK For TH12 series SYN_DATA SYN_DATA SLOT_CTRL SLOT_CTRL *WBX03 RADIO_EN RADIO_EN L473 RX_DATA...
  • Page 81 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 4.0V 6.5~12V 4.0V CONVERTOR 3.3V IC331 L300 22uH VOUT REFERENCE VDET 1XX : TEL LINE 3XX : POWER, CHARGE *RESET 4XX : RESET, MIC, SP 5XX : DSP, RF I/F Charge detection Q300 6XX : FLASH, KEY, LCD 7XX : RF(2.4G) *Q361 8XX : RF(5.8G)

  • Page 82: Schematic Diagram (Base Unit_Rf Part)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 13.3. Schematic Diagram (Base Unit_RF Part)

  • Page 83: Schematic Diagram (Base Unit_Operation)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 13.4. Schematic Diagram (Base Unit_Operation) 2APVCC LED902 MEG_LED LED901 ANS_LED KEYS_B KEYIN1 KEYIN2 KEYIN3 KEYS_C KEYS_D KEYS_E ANS1 ERASE MSG2 SKIP MSG1 DOWN LOCAT/INT STOP KX-TG9331 SCHEMATIC DIAGRAM (Base Unit_Operation)

  • Page 84: Schematic Diagram (Handset_Main)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 13.5. Schematic Diagram (Handset_Main) RF circuit BCLK R540 BCLK C540 K0.1 TX_DATA TX_DATA SLOT_CTRL SLOT_CTRL RX_DATA RX_DATA RF_POWER DSP Part (control circuit) RF_POWER RF control line RADIO_EN R525 X501 RF_RSTN RF_RSTN 13.824MHz SYN_DATA SYN_DATA Flash memory for booting R501...
  • Page 85 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT TEST SIGNAL FREQUENCY: 1kHz Voice circuit SPPP SPPN SP phone RX (MIC Mute: ON) 1.8Vp-p/8 (Vol. Max) SP_PHONE *R436 Headset TX 50mVp-p/600 *R431 *CN431 L431 L432 *L434 *C435 HEADSET_JACK Headset RX 10uF 170mVp-p/150 (Vol. Max) RECEIVER Handset RX RA403...
  • Page 86 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 13.6. Schematic Diagram (Handset_RF Part)
  • Page 87 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 13.7. Schematic Diagram (Charger Unit) R1 10 SCHEMATIC DIAGRAM (Charger Unit)
  • Page 88 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT Memo...

  • Page 89: Printed Circuit Board

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 14 Printed Circuit Board 14.1. Circuit Board (Base Unit_Main) 14.1.1. Component View ANT2 ANT1_HOT2 ANT2_HOT2 ANT1 3.0A F301 C901 C306 C301 IC300 R308 C797 C793 L795 R303 C305 Q300 R304 C308 C304 C791 R782 C756 C772 D781 C761 C782...
  • Page 90 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 14.1.2. Bottom Side View ANT2_HOT ANT1_HOT ANT2_GND POWER only for TGxxxx DCP2 ANT1_GND Series C-POWER RING DCM2 only for TH12xx Series C757 Digital Vcc only for TH12xx Series BCLK 13.824 MHz R612 R611 BCLK DVCC C601 C612 KEY_GND C361...

  • Page 91: Circuit Board (Base Unit_Rf Part)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 14.2. Circuit Board (Base Unit_RF Part) C797 C793 L795 C791 R782 D781 C756 C772 C782 C761 C713 C755 C711 C738 C712 C701 C743 C721 L721 IC701 RF_Vcc (3.0 V) C722 C714 V_RF (4.0 V) C742 KX-TG9331 CIRCUIT BOARD (Base Unit_RF Part (Component View))
  • Page 92 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT Memo...

  • Page 93: Circuit Board (Base Unit_Operation)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 14.3. Circuit Board (Base Unit_Operation) 14.3.1. Component View PQUP11553Z PNLP1013Z KX-TG4321 / 6321 / 9331 / 9371H WBX01 KX-TG9331 CIRCUIT BOARD (Base Unit_Operation (Component View))
  • Page 94 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 14.3.2. Bottom Side View KX-TG4321 / 6321 / 9331 / 9371H LED901 PNLP1013Z PQUP11553Z ERASE ANS1 LED902 MSG1 MSG2 SKIP STOP LOCAT/INT DOWN KEYS_E KEYS_C KEYIN2 KEYS_B MEG_LED KEYS_D KEYIN3 KEYIN1 ANS_LED 2APVCC KX-TG9331 CIRCUIT BOARD (Base Unit_Operation (Bottom Side View))

  • Page 95: Circuit Board (Handset_Main)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 14.4. Circuit Board (Handset_Main) 14.4.1. Component View ANT1_HOT4 ANT1 KX-TGA93 PQUP11558Z ANT1_HOT3 C797 C793 ANT2_GND L795 C791 ANT2 R782 ANT1_GND D781 C756 C772 C761 C782 C713 C755 C711 C738 C712 C701 C743 C721 ANT1_HOT2 RF_Vcc L721 IC701 C722 IC741 (2.7 V)
  • Page 96 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 14.4.2. Bottom Side View R PbF KX-TGA93 PQUP11558Z LED557 LED556 LED555 LEFT MENU RIGHT TALK BACK NEXT PAUSE DOWN FLASH HOLD KX-TGA931/930 CIRCUIT BOARD (Handset_Main (Bottom Side View)

  • Page 97: Schematic Diagram (Handset_Rf Part)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 14.5. Circuit Board (Handset_RF Part) C797 C793 L795 C791 R782 D781 C756 C772 C782 C761 C713 C755 C711 C738 C712 C701 C743 C721 RF_Vcc L721 IC701 (2.7 V) C722 IC741 C714 V_RF/V_ (3.1 V) C742 KX-TGA931/930 CIRCUIT BOARD (Handset_RF Part (Component View))
  • Page 98 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 14.6. Circuit Board (Charger Unit) 14.6.1. Component View CIRCUIT BOARD (Charger Unit (Component View)) 14.6.2. Bottom Side View TP4 (GND) CIRCUIT BOARD (Charger Unit (Bottom Side View))

  • Page 99: Cpu Data (Base Unit)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 15 Appendix Information of Schematic Diagram 15.1. CPU Data (Base Unit) 15.1.1. IC501 Description High High_Z 60 KEY_IN6 Key In Description High High_Z 61 KEY_IN5 Key In GNDPA 62 KEY_IN4 Key In SPOUTP 63 KEY_IN3 Key In BCLK 64 KEY_IN2...

  • Page 100: Cpu Data (Handset)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 15.2. CPU Data (Handset) IC501 15.2.1. Description High High_Z 61 NC Normal Description High High_Z 62 NC Normal GNDPA 63 KEYSTROBE_E Active SPOUTP 64 KEYSTROBE_D Active BCLK 65 KEYSTROBE_C Active Normal 66 KEYSTROBE_B Active 67 KEYSTROBE_A Active XOUT 68 GND...

  • Page 101: Explanation Of Ic Terminals (Rf Part)

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 15.3. Explanation of IC Terminals (RF Part) IC701 15.3.1.

  • Page 102: Diodes

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 15.4. Terminal Guide of the ICs, Transistors and Diodes 15.4.1. Base Unit 15.4.2. Handset 15.4.3. Charger Unit...

  • Page 103: Exploded View And Replacement Parts List

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 16 Exploded View and Replacement Parts List 16.1. Cabinet and Electrical Parts (Base Unit)

  • Page 104: Cabinet And Electrical Parts (Handset)

    (*1) This cable is fixed by welding. Refer to How to Replace the Handset LCD (P.72). (*2) Refer to Handset (P.102) of Terminal Guide of the ICs, Transistors and Diodes. (*3) Attach the SPACER (No. 129) to the exact location described above. (*4) The rechargeable Ni-MH battery HHR-4MPT is available through sales route of Panasonic.
  • Page 105 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 16.3. Cabinet and Electrical Parts (Charger Unit)

  • Page 106: Accessories And Packing Materials

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 16.4. Accessories and Packing Materials 16.4.1. KX-TG9331BXT...
  • Page 107 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 16.4.2. KX-TGA930BXT...

  • Page 108: Replacement Parts List

    KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 16.5. Replacement Parts List Safety Ref. Part No. Part Name & Description Remarks 1. RTL (Retention Time Limited) PNBC1001Z2 BUTTON, MESSAGE AS-HB Note: PNJK1005Z KEYBOARD SWITCH The “RTL” marking indicates that its Retention Time is PNLA1004Z ANTENNA PQMG10025W RUBBER PARTS, MIC Limited.
  • Page 109 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R121 ERJ3GEYJ394 390k C342 ECUV0J105KBV 1 R122 ERJ3GEYJ394 390k C352 ECUE1A104KBQ 0.1 R131 PQ4R18XJ106 C381 ECUV1A105KBV 1 R133 ERJ3GEYJ105 C382 PQCUV0J106KB 10...
  • Page 110 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks P101 PFRT002 THERMISTOR (POSISTOR) IC371 C0DBGYY00297 IC F301 K5H302Y00003 FUSE IC373 C0DBAYY00067 IC X501 H0J138500003 CRYSTAL OSCILLATOR (*1) IC374 C0EBD0000355 IC...
  • Page 111 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R542 ERJ2GEJ222 2.2k C715 ECUE1A104KBQ 0.1 R543 ERJ2GEJ274 270k C721 ECUE1H101JCQ 100p R561 ERJ2GEJ101 C722 ECUE1H121JCQ 120p R564 ERJ3GEYJ101 C737 ECUE1C103KBQ 0.01...
  • Page 112 KX-TG9331BXT/KX-TGA931BXT/KX-TGA930BXT 16.5.4. Accessories and Packing Materials Note: (*1) You can download and refer to the Operating Instruc- tions (Instruction book) on TSN Server. 16.5.4.1. KX-TG9331BXT Safety Ref. Part No. Part Name & Description Remarks PQLV207BXU ADAPTOR (for Base Unit) PQJA10075Z...

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