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Panasonic KX-TG6461 Service Manual
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Panasonic KX-TG6461 Service Manual

Panasonic KX-TG6461 Service Manual

Digital cordless answering system
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Telephone Equipment
KX-TG6461BXT
Model No.
KX-TGA641BXT
Digital Cordless Answering System
T: Titanium Black Version
(for Middle Near East and Africa)
© Panasonic Communications Co., Ltd. 2009.
Unauthorized copying and distribution is a
violation of law.
ORDER NO. KM40909011CE

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Summary of Contents for Panasonic KX-TG6461

  • Page 1 ORDER NO. KM40909011CE Telephone Equipment KX-TG6461BXT Model No. KX-TGA641BXT Digital Cordless Answering System T: Titanium Black Version (for Middle Near East and Africa) © Panasonic Communications Co., Ltd. 2009. Unauthorized copying and distribution is a violation of law.
  • Page 2 KX-TG6461BXT/KX-TGA641BXT...

  • Page 3: Table Of Contents

    KX-TG6461BXT/KX-TGA641BXT TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions----------------------------------------------- 4 13.6. Schematic Diagram (Charger Unit)------------------ 78 1.1. For Service Technicians --------------------------------- 4 14 Printed Circuit Board ------------------------------------------ 79 2 Warning -------------------------------------------------------------- 4 14.1. Circuit Board (Base Unit_Main) ---------------------- 79 2.1. Battery Caution--------------------------------------------- 4 14.2.

  • Page 4: Safety Precautions

    KX-TG6461BXT/KX-TGA641BXT 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. 1.

  • Page 5: Discarding Of P. C. Board

    KX-TG6461BXT/KX-TGA641BXT 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-TG6461BXT/KX-TGA641BXT 3 Specifications Note: • Design and specifications are subject to change without notice. Note for Service: • Operation range: Up to 300 m outdoors, Up to 50 m indoors, depending on the condition. • Analog telephone connection: Telephone Line...

  • Page 7: Technical Descriptions

    KX-TG6461BXT/KX-TGA641BXT 4 Technical Descriptions 4.1. Block Diagram (Base Unit)

  • Page 8: Circuit Operation (Base Unit)

    KX-TG6461BXT/KX-TGA641BXT 4.2. Circuit Operation (Base Unit) 4.2.1. Outline Base unit consists of the following ICs as shown in Block Diagram (Base Unit) (P.7). • DECT BBIC (Base Band IC): IC501 - Handling all the audio, signal and data processing needed in a US DECT base unit - Controlling the US DECT specific physical layer and radio section (Burst Module Controller section) - ADPCM code filter for speech encoding and speech decoding (DSP section) - Echo-cancellation and Echo-suppression (DSP section)
  • Page 9 KX-TG6461BXT/KX-TGA641BXT 4.2.2. Power Supply Circuit The power is supplied to the BBIC,TAM Companion,Power AMP,LCD module,EEPROM,Flash Memory,LED,LCD backlight from AC Adaptor(+6.5V) as shown in Fig 1. When power line failure, the power is supplied to BBIC,TAM companion,EEPROM from telephone line instead of AC Adaptor through D138 and Q341.
  • Page 10 KX-TG6461BXT/KX-TGA641BXT 4.2.3. Telephone Line Interface Function • Bell signal detection • CLIP signal detection • ON/OFF hook and pulse dial circuit Bell & CLIP (Calling Line Identification Presentation: Caller ID) signal detection: In standby mode,Q111/Q115 is open to cut the DC Loop current and decrease the ring load. When ringing voltage appears at the TIP and RING, AC ring voltages transferred as followings;...
  • Page 11 KX-TG6461BXT/KX-TGA641BXT 4.2.5. RF cuircuit BBIC(IC501) inclueds the RF transceiver circuit. (LNA,Mixer, IF filter, modulator/Demodulator,PLL, VCO etc). This RF transceiver is interfaced with Power-AMP(IC801) and Antenna circuit. 4.2.6. Pulse Dialling During pulse dialling the hookswitch (Q3, Q4) is used to generate the pulses using the HOOK control signal, which is set high during pulses.

  • Page 12: Block Diagram (Cordless Handset)

    KX-TG6461BXT/KX-TGA641BXT 4.3. Block Diagram (Cordless Handset)

  • Page 13: Circuit Operation (Cordless Handset)

    KX-TG6461BXT/KX-TGA641BXT 4.4. Circuit Operation (Cordless Handset) 4.4.1. Outline Cordless Handset consists of the following ICs as shown in Block Diagram (Cordless Handset) (P.12). • 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.) - PLL Oscillator - Detector - Compress/Expander...

  • Page 14: Circuit Operation (Charger Unit)

    KX-TG6461BXT/KX-TGA641BXT 4.5. Circuit Operation (Charger Unit) 4.5.1. Power Supply Circuit The power supply is as shown.

  • Page 15: Signal Route

    KX-TG6461BXT/KX-TGA641BXT 4.6. Signal Route...
  • Page 16 KX-TG6461BXT/KX-TGA641BXT...
  • Page 17 KX-TG6461BXT/KX-TGA641BXT...

  • Page 18: Location Of Controls And Components

    KX-TG6461BXT/KX-TGA641BXT 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. 7 Operating Instructions Refer to the Operating Instructions.

  • Page 19: Service Mode

    KX-TG6461BXT/KX-TGA641BXT 8 Service Mode 8.1. Engineering Mode 8.1.1. Base Unit...
  • Page 20 KX-TG6461BXT/KX-TGA641BXT Frequently Used Items (Base Unit) ex.) Items Address Default Data New Data Remarks C-ID (FSK) sensitivity 05 A4 01 (6 dB up) 02 (12 dB up) When hex changes from “00” to “01” or “02”, gain increases by 6 dB or 12 dB. C-ID (DTMF) sensitivity 05 B2 60 (6 dB up)
  • Page 21 KX-TG6461BXT/KX-TGA641BXT 8.1.2. Cordless Handset...
  • Page 22 KX-TG6461BXT/KX-TGA641BXT Frequently Used Items (Cordless Handset) ex.) Items Address Default Data New Data Possible Adjusted Possible Adjusted Remarks Value MAX (hex) Value MIN (hex) Sending level 00 06 Adjusted value Given value (*2) Receiving level 00 07 Adjusted value Given value (*3) Battery Low 00 04...

  • Page 23: Copying Phonebook Items When Repairing

    8.2. Copying Phonebook Items when Repairing You can copy the base unit (Maximum number of contacts is 100.) phonebook to another (compatible Panasonic) cordless handset. This will help to save the original phonebook data which the customer has registered. * You cannot copy the base unit phonebook to another base unit.
  • Page 24 KX-TG6461BXT/KX-TGA641BXT Note: • BS=Base Unit , CH=Cordless Handset • If the max number of Cordless Handsets are already registered to the base unit, a new Cordless Handsets cannot be registered.

  • Page 25: How To Clear User Setting

    KX-TG6461BXT/KX-TGA641BXT 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: • The reset menus differ depending on the following operations. • This operation should not be performed for a usual repair. 8.3.1.

  • Page 26: Troubleshooting Guide

    KX-TG6461BXT/KX-TGA641BXT 9 Troubleshooting Guide 9.1. Troubleshooting Flowchart Flow Chart Cross Reference: Check Caller ID (P.35) Check Power (P.27) Check TAM Operation (P.37) Bell Reception (P.36) Check SP-phone Transmission (P.37) Check Battery Charge (P.28) Check SP-phone Reception (P.37) Check Link (P.29) Check the RF part (P.33) Check Cordless Handset Transmission (P.35) Check Cordless Handset Reception (P.35)
  • Page 27 KX-TG6461BXT/KX-TGA641BXT 9.1.1. Check Power 9.1.1.1. Base Unit Is the AC Adaptor inserted into AC outlet? (*1) Cross Reference: Note: Power Supply Circuit (P.9) (*1) Refer to Specifications (P.6) for part number and supply voltage of AC adaptor. 9.1.1.2. Cordless Handset Cross Reference: Power Supply Circuit/Reset Circuit (P.13)
  • Page 28 KX-TG6461BXT/KX-TGA641BXT 9.1.2. Check Battery Charge 9.1.2.1. Cordless Handset Cross Reference: Check Power (P.27) Charge Circuit (P.13) 9.1.2.2. Charger Unit Cross Reference: Charge Circuit (P.13)
  • Page 29 KX-TG6461BXT/KX-TGA641BXT 9.1.3. Check Link 9.1.3.1. Base Unit Cross Reference: Power Supply Circuit (P.9) Check Point (Base Unit) (P.38) Note: (*1) Refer to Troubleshooting by Symptom (Base Unit and Charger Unit) (P.38).
  • Page 30 KX-TG6461BXT/KX-TGA641BXT Cross Reference: Check Point (Base Unit) (P.38)
  • Page 31 KX-TG6461BXT/KX-TGA641BXT 9.1.3.2. Cordless Handset Cross Reference: Power Supply Circuit/Reset Circuit (P.13) Check Point (Cordless Handset) (P.42) Note: (*1) Refer to Troubleshooting by Symptom (Cordless Handset) (P.42).
  • Page 32 KX-TG6461BXT/KX-TGA641BXT Cross Reference: Check Point (Cordless Handset) (P.42)
  • Page 33 KX-TG6461BXT/KX-TGA641BXT 9.1.4. Check the RF part 9.1.4.1. Finding out the Defective part After All the Checkings or Repairing 1. Re-register the checked Cordless Handset to the checked Base Unit, and Regular CH to Regular BU.
  • Page 34 KX-TG6461BXT/KX-TGA641BXT 9.1.4.2. RF Check Flowchart Each item (1 ~ 4) of RF Check Flowchart corresponds to Check Table for RF part (P.35). Please refer to the each item. Note: (*1) Base unit - refer to (H) of Check Point (Base Unit) (P.38) (*2) Cordless Handset - refer to (J) of Check Point (Cordless Handset) (P.42)
  • Page 35 KX-TG6461BXT/KX-TGA641BXT 9.1.4.3. Check Table for RF part Item BU (Base Unit) Check CH (Cordless Handset) Check Link Confirmation Normal 1. Register Regular CH to BU (to be 1. Register CH (to be checked) to Regular checked). 2. Press [Talk] key of the Regular HS to 2.
  • Page 36 KX-TG6461BXT/KX-TGA641BXT 9.1.8. Bell Reception 9.1.8.1. Base Unit 9.1.8.2. Cordless Handset Cross Reference: Telephone Line Interface (P.10) Check Link (P.29) How to Check the Cordless Handset Speaker or Receiver (P.62)
  • Page 37 KX-TG6461BXT/KX-TGA641BXT 9.1.9. Check TAM Operation Cross Reference: Power Supply Circuit (P.9) Note: (*1) When replacing FLASH MEMORY (IC541), TAM data needs to be written to it. Refer to Base Unit (P.59) of Things to Do after Replacing IC. 9.1.10. Check SP-phone Transmission Cross Reference: Signal Route (P.15) 9.1.11.

  • Page 38: Troubleshooting By Symptom (Base Unit And Charger Unit)

    KX-TG6461BXT/KX-TGA641BXT 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 wether you have DECT tester (*1) or not. Note: (*1) A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic level in detail.
  • Page 39 KX-TG6461BXT/KX-TGA641BXT Items Check Procedure Check or Point Replace Parts (I)* Hookswitch Check with 1. Connect TIP/RING (Telephone Socket) to Tel-simulator which is connected P101,D101, with 600 Ω. DC Characteristics Q111,Q112, 2. Set line voltage to 48 V and line current to 40 mA at off-hook condition of R110,R111, normal telephone.
  • Page 40 KX-TG6461BXT/KX-TGA641BXT Items Check Procedure Check or Point Replace Parts Audio Check (Through Cordless handset) P101,D101, 1. Link with cordless handset. Q111,Q112, 2. Input -45 dBm (600Ω)/1KHz to MIC of cordless handset. R110,R112, Measure the Level at Line I/F and distortion level. R123,R115, 3.
  • Page 41 KX-TG6461BXT/KX-TGA641BXT 9.2.2. Check Point (Charger Unit) Items Check Procedure Check or Point Replace Parts 1. Connect Charge Contact 12 Ω/2 W resistor between charge+ and charge-. Charging Check R1,F1 2. Measure and confirm voltage across the resistor is 3.1 V ± 0.3 V. Note: After the measuring, suck up the solder of TP.

  • Page 42: Troubleshooting By Symptom (Cordless Handset)

    KX-TG6461BXT/KX-TGA641BXT 9.3. Troubleshooting by Symptom (Cordless Handset) If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester (*1) or not. Note: (*1) A general repair is possible even if you don’t have the DECT tester because it is for confirming the levels, such as Acoustic level in detail.
  • Page 43 KX-TG6461BXT/KX-TGA641BXT 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 R12, R45 sendchar PAD sendchar LED 0 sendchar CRX 0 1 sendchar AD1 It assumes that the return value is XX.
  • Page 44 KX-TG6461BXT/KX-TGA641BXT Items Check Procedure Check or Point Replace Parts (K)* Frequency Offset Confir- Follow steps 1 to 3 of (I). IC1, mation 4.Confirm that the frequency Offset is < ± 50 kHz. C802~C806, C808~C814, C819~C820, C822, C825~C827, C834, C859~C864, L801~L804, DA801, R801~R808 (L)* Frequency Drift Confir-...
  • Page 45 KX-TG6461BXT/KX-TGA641BXT 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. ex.) The customer is using optical fiber, ISDN terminal adaptor, or PBX.

  • Page 46: Disassembly And Assembly Instructions

    KX-TG6461BXT/KX-TGA641BXT 10 Disassembly and Assembly Instructions 10.1. Disassembly Instructions 10.1.1. Base Unit...
  • Page 47 KX-TG6461BXT/KX-TGA641BXT...
  • Page 48 KX-TG6461BXT/KX-TGA641BXT 10.1.2. Cordless Handset...
  • Page 49 KX-TG6461BXT/KX-TGA641BXT 10.1.3. Charger Unit...

  • Page 50: Assembly Instructions

    KX-TG6461BXT/KX-TGA641BXT 10.2. Assembly Instructions 10.2.1. How to Replace the Base unit LCD...
  • Page 51 KX-TG6461BXT/KX-TGA641BXT 10.2.2. How to Replace the Cordless Handset LCD...

  • Page 52: Measurements And Adjustments

    KX-TG6461BXT/KX-TGA641BXT 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.26) 11.1. Equipment Required • Digital multi-meter (DMM): it must be able to measure voltage and current. •...
  • Page 53 KX-TG6461BXT/KX-TGA641BXT 11.2.2. How to install Batch file into P.C. Note: • “****” varies depending on the country or models. 11.2.3. Commands See the table below for frequently used commands. Command name Function Example rdeeprom Read the data of EEPROM Type “rdeeprom 00 00 FF”, and the data from address “00 00”...

  • Page 54: Adjustment Standard (Base Unit)

    KX-TG6461BXT/KX-TGA641BXT 11.3. Adjustment Standard (Base Unit) When connecting the simulator equipments for checking, please refer to below. 11.3.1. Bottom View 0.22uF SP_PHONE_Receiver 6.3 V 47 F Corde-Handset MIC DCINP (+6.5V) DCINM (GND) Corded-Handset Receiver SPI_DO SPI_CLK SDA2 SCL2 6.3 V 47 F SP_PHONE_MIC Note: (A) - (S) is referred to Check Point (Base Unit) (P.38)

  • Page 55: Adjustment Standard (Charger Unit)

    KX-TG6461BXT/KX-TGA641BXT 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.41)

  • Page 56: The Setting Method Of Jig (Cordless Handset)

    KX-TG6461BXT/KX-TGA641BXT 11.5. The Setting Method of JIG (Cordless Handset) This section explains the PC setting to use command required in Check Point (Cordless Handset)(P.42). <Preparation> • Serial JIG cable: PQZZ1CD300E • PC which runs in DOS mode • Batch file CD-ROM for setting: PNZZTG6461BX 11.5.1.
  • Page 57 KX-TG6461BXT/KX-TGA641BXT 11.5.2. How to install Batch file into P.C. Note: • “*****” varies depending on the country or models. 11.5.3. Commands See the table below for frequently used commands. Command name Function Example rdeeprom Read the data of FLASH Type “rdeeprom 00 00 FF”, and the data from address “00 00”...

  • Page 58: Adjustment Standard (Cordless Handset)

    KX-TG6461BXT/KX-TGA641BXT 11.6. Adjustment Standard (Cordless Handset) When connecting the simulator equipments for checking, please refer to below. 11.6.1. Component View PNLB1103Y TP_ANT1 KX-TGA641 EUDECT KX-TGA106 USDECT RECEIVER RED (EU) BLACK (EU) BLUE (US) WHITE (EU) C70 C152 C71 C138 C139 BLACK L804 REV+...

  • Page 59: Things To Do After Replacing Ic Or X'tal

    KX-TG6461BXT/KX-TGA641BXT 11.7. Things to Do after Replacing IC or X'tal If repairing or replacing BBIC (FLASH type), 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. 11.7.1.
  • Page 60 KX-TG6461BXT/KX-TGA641BXT 11.7.1.2. Cordless Handset First, operate the PC setting according to The Setting Method of JIG (Cordless Handset)(P.56). 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. 1) Make sure to connect the JIG cable, then disconnect the DC (IC1) Power in order to download the data.

  • Page 61: Rf Specification

    KX-TG6461BXT/KX-TGA641BXT 11.8. RF Specification 11.8.1. Base Unit Item Value Refer to -. * TX Power 19.0 dBm ~ 25.0 dBm Check Point (Base Unit) (K) Modulation -370 ± 30/+370 ± 30 kHz/div & Modulated Check Point (Base Unit) (L) width 690 kHz Frequency Offset -50 kHz ~ +50 kHz...

  • Page 62: How To Check The Cordless Handset Speaker Or Receiver

    KX-TG6461BXT/KX-TGA641BXT 11.9. How to Check the Cordless 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. 11.10. Frequency Table (MHz) BASE UNIT CORDLESS HANDSET Channel No Transmit Frequency...

  • Page 63: Miscellaneous

    KX-TG6461BXT/KX-TGA641BXT 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. 12.1.1.
  • Page 64 KX-TG6461BXT/KX-TGA641BXT 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. 3.

  • Page 65: How To Replace The Shield Case

    KX-TG6461BXT/KX-TGA641BXT 12.2. How to Replace the 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. 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-TG6461BXT/KX-TGA641BXT 12.2.3. 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 67: How To Replace The Llp

    KX-TG6461BXT/KX-TGA641BXT 12.3. How to Replace the LLP (Leadless Leadframe Package) IC 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 68 KX-TG6461BXT/KX-TGA641BXT 12.3.4. 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. 2. Place the solder a little on the land where IC pins are to be attached, then place the IC. Note: •...

  • Page 69: Terminal Guide Of The Ics, Transistors And Diodes

    KX-TG6461BXT/KX-TGA641BXT 12.4. Terminal Guide of the ICs, Transistors and Diodes 12.4.1. Base Unit 12.4.2. Cordless Handset...
  • Page 70 KX-TG6461BXT/KX-TGA641BXT Note:...

  • Page 71: Schematic Diagram

    KX-TG6461BXT/KX-TGA641BXT 13 Schematic Diagram 13.1. For Schematic Diagram 13.1.1. Base Unit (Schematic Diagram (Base Unit_Main)) 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. 13.1.2.

  • Page 72: Schematic Diagram (Base Unit_Main)

    KX-TG6461BXT/KX-TGA641BXT 13.2. Schematic Diagram (Base Unit_Main) +3.2V_PD VDD_flash_LCD CP_VOUT1 VDD4 R386 R387 TAM_WP *R542 270k TAM_WP *HOLD SPI_CLK SPI_DO *IC541 SPI_DI FLASH_CSn +3.2V_PD +1.8V L201 TAM_EN TAM_RESET L202 R202 TAM_RESET C218 TAM_EN C219 SPI2_CLK C220 SPI2_DI C221 SPI2_DO C222 SPI2_CLK SPI2_DI SPI2_DO GND_C...
  • Page 73 KX-TG6461BXT/KX-TGA641BXT CDL T x ( to T el line ) CDL R x ( from T el line ) SP_P hone T x ( to T el line ) SP_P hone R x ( from T el line ) (C orded ) H andset T x ( to T el line ) (C orded ) H andset R x ( from T el line ) B ell B ell (P ower fail )

  • Page 74: Schematic Diagram (Base Unit_Rf Part)

    L 4.0mm x2 1st layer PSET VCCS PSEL C812 PAON PRAMP IC801 VDD_PADRV R805 Balun R803 PSEL W 0.15mm L 15.6mm 3rd layer R804 2.4mm 1st layer Pre-matching R806 TXON RF-SHIELD NC: No Components KX-TG6461 SCHEMATIC DIAGRAM (Base Unit_RF Part)

  • Page 75: Schematic Diagram (Base Unit_Operation)

    CN903 7 LCD_SCL R937 SCLK CN902-9 CN903 6 LCD_CD R939 CN903 5 CN901-9 LCD_RESET R938 CN903 4 RESETB CN902-10 LCD_CSB R940 CN903 3 LCD_CSB CN901-10 OPT_PWR CN903 2 CN901-11 CN903 1 R941 NC: No Components KX-TG6461 SCHEMATIC DIAGRAM (Base Unit_Operation)

  • Page 76: Schematic Diagram (Cordless Handset)

    KX-TG6461BXT/KX-TGA641BXT 13.5. Schematic Diagram (Cordless Handset) Charge Current BATTERY 5.6n BATT+ 1.8V BATTERY (MAX500mA) C150 BATTERY +1.8V 1.8V BATT- study to X_CLK 3.0V 4.0V CP+3.0V CP+4.0V 3.9k CHG(+) CHARGE Terminal K10u POWER *C38 K10u CHG(-) +1.8V D10p D10p GND_0 K0.1u RSTn VBAT2 +1.8V...
  • Page 77 KX-TG6461BXT/KX-TGA641BXT W 0.15mm L 20+/-2mm 3rd layer R807 RXON L801 C827 TP_ANT1 RX_RF C826 RF_RXn *C859 C803 1.5p DA801 RF_RXp W 0.125mm L 7.6mm CP+3.0V Gap 0.125mm W 0.15mm W 0.15mm 1st layer L 5.0mm L 5.0mm 1st layer 1st layer C172 K0.1u BATTERY...

  • Page 78: Schematic Diagram (Charger Unit)

    KX-TG6461BXT/KX-TGA641BXT 13.6. Schematic Diagram (Charger Unit) 12 (2W) SCHEMATIC DIAGRAM (Charger Unit)

  • Page 79: Printed Circuit Board

    R215 MIC+ MIC- R213 C225 C393 CN1-1 CN1-2 CN1-3 CN1-4 CN1-5 CN1-6 CN1-7 CN1-8 CN1-9 CN1-10CN1-11 CN1-12 CN1-13 CN1-14 PNWH01 PNWH02 CN2-1 CN2-2 CN2-3 CN2-4 CN2-5 CN2-6 CN2-7 CN2-8 CN2-9 CN2-10CN2-11CN2-12 CN2-13 CN2-14 KX-TG6461 CIRCUIT BOARD (Base Unit_Main (Component View))
  • Page 80 C542 VDD4 Q541 HOOK1 Q607 Q606 Q605 HOOK3 L221 TAM_WP Q602 Q604 L224 GND_C Q601 C672 R114 VDD7 RDI SIO L223 R604 R602 Q603 L222 TAM_RESET PNWH01 HOOK2 PNWH02 VDD4 (3.2V) VDD7 (4.4V) KX-TG6461 CIRCUIT BOARD (Base Unit_Main (Bottom View))

  • Page 81: Circuit Board (Base Unit_Operation)

    KX-TG6461BXT/KX-TGA641BXT 14.2. Circuit Board (Base Unit_Operation) 14.2.1. Component View C937 C938 R936 C932 R937 C933 R939 C934 R938 C935 R940 C931 R941 R931 R935 R934 R933 C936 R932 KX-TG6461 CIRCUIT BOARD (Base Unit_Operation (Component View))
  • Page 82 KX-TG6461BXT/KX-TGA641BXT 14.2.2. Bottom View SW901 KX-TG6461 CIRCUIT BOARD (Base Unit_Operation (Bottom View))

  • Page 83: Circuit Board (Cordless Handset)

    KX-TG6461BXT/KX-TGA641BXT 14.3. Circuit Board (Cordless Handset) 14.3.1. Component View PNLB1103Y TP_ANT1 KX-TGA641 EUDECT KX-TGA106 USDECT RCV+ RECEIVER RCV- RED (EU) BLACK (EU) BLUE (US) WHITE (EU) C70 C152 C71 C138 C139 BLACK L804 C863 C864 C811 C814 C804 C813 R208 R209 L802 C802...
  • Page 84 KX-TG6461BXT/KX-TGA641BXT 14.3.2. Bottom View PNLB1103Y KX-TGA641 EUDECT KX-TGA106 USDECT SOFT_A SOFT_B SOFT_C TALK LED8 LED6 DOWN KX-TGA641 CIRCUIT BOARD (Handset_Main (Bottom View))

  • Page 85: Circuit Board (Charger Unit)

    KX-TG6461BXT/KX-TGA641BXT 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-TG6461BXT/KX-TGA641BXT 15 Exploded View and Replacement Parts List 15.1. Cabinet and Electrical Parts (Base Unit) Note: (*1) This cable is fixed by soldering. Refer to How to Replace the Base unit LCD (P.50).

  • Page 87: Cabinet And Electrical Parts (Cordless Handset)

    (*1) This cable is fixed by soldering. Refer to How to Replace the Cordless Handset LCD (P.51). (*2) The rechargeable Ni-MH battery HHR-4MPT is available through sales route of Panasonic. (*3) Attach the spacer (No. 121) to the exact location described above.

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

    KX-TG6461BXT/KX-TGA641BXT 15.3. Cabinet and Electrical Parts (Charger Unit)

  • Page 89: Accessories

    KX-TG6461BXT/KX-TGA641BXT 15.4. Accessories...

  • Page 90: Replacement Parts List

    KX-TG6461BXT/KX-TGA641BXT 15.5. Replacement Parts List 1. RTL (Retention Time Limited) Safety Ref. Part No. Part Name & Description Remarks Note: L0DDYD000010 BUZZER The “RTL” marking indicates that its Retention Time is PNBC1005W1 BUTTON, ERASE ABS-HB Limited. PNBC1006W1 BUTTON, STOP ABS-HB When production is discontinued, this item will PNBC1007V1 BUTTON, LOCATOR...
  • Page 91 KX-TG6461BXT/KX-TGA641BXT Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks Q608 2SD0874AS TRANSISTOR(SI) R154 ERJ2GEJ101 (DIODES) R163 ERJ14YJ392 3.9k D101 B0EDER000009 DIODE(SI) R165 ERJ3GEYJ183 D301 B0JCME000035 DIODE(SI) R166 ERJ3GEYJ183 D112 MA1Z300 DIODE(SI) R167 ERJ3GEYJ332...
  • Page 92 KX-TG6461BXT/KX-TGA641BXT Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R804 ERJ2GEJ102 C371 F1J1A106A024 10 R805 ERJ2GEJ470 C385 ECEA0JKA331 R806 ERJ2GEJ221 C391 ECUE1H222KBQ 0.0022 R807 ERJ2GEJ221 C392 ECUE1H222KBQ 0.0022 R808 ERJ2GEJ221 C393 ECUE1H681KBQ 680p R809...
  • Page 93 KX-TG6461BXT/KX-TGA641BXT 15.5.1.3. Operational P.C.Board parts Safety Ref. Part No. Part Name & Description Remarks Note: PNJC1014Z BATTERY TERMINAL (*1) When replacing the cordless handset LCD, See How to PNKF1057Z1 CABINET COVER ABS-HB Replace the Base unit LCD(P.50). PNHX1219Z PET SHEET PNHS1079Z SPACER, BATTERY PNKK1027Z1...
  • Page 94 KX-TG6461BXT/KX-TGA641BXT Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks (IC FILTER) ECUE1H100DCQ 10p J0JHC0000045 IC FILTER ECUE1H100DCQ 10p (RESISTORS) ECUE1H100DCQ 10p ERJ2GEJ392 3.9k ECUE1H100DCQ 10p ERJ2GEJ102 ECUE1H100DCQ 10p ERJ2GEJ122 1.2k C103 ECUE1H101JCQ 100p ERJ2GEJ101...
  • Page 95 KX-TG6461BXT/KX-TGA641BXT 15.5.3. Charger Unit 15.5.3.1. Cabinet and Electrical Parts Safety Ref. Part No. Part Name & Description Remarks PNLC1008ZT CHARGER UNIT ASS'Y without NAME PLATE (RTL) 200-1 PNKM1077Z1 CABINET BODY PS-HB 200-2 PNJT1010Z CHARGE TERMINAL 200-3 PNKF1012Z1 CABINET COVER PS-HB 200-4 PQHA10023Z RUBBER...

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Kx-tga641Kx-tg6461bxtKx-tga641bxt

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