Panasonic KX-TG6541BXB Service Manual
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Panasonic KX-TG6541BXB Service Manual

Panasonic KX-TG6541BXB Service Manual

Expandable digital cordless answering system
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Caller ID Compatible
KX-TGA652BXB
(Handset)
(Charger Unit)
Configuration for each model
Model No
Base Unit
KX-TG6541 1 (TG6541) 1 (TGA652)
KX-TG6542 1 (TG6541) 2 (TGA652)
KX-TG6541BXB
(Base Unit)
Handset
Charger Unit Expandable
Up to 6
1
Up to 6
Telephone Equipment
KX-TG6541BXB
Model No.
KX-TG6542BXB
KX-TGA652BXB
Expandable Digital Cordless Answering
System
B: Black Version
(for Middle Near East and Africa)
© Panasonic System Networks Co., Ltd. 2011
Unauthorized copying and distribution is a violation
of law.
ORDER NO. KM41108483CE

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Summary of Contents for Panasonic KX-TG6541BXB

  • Page 1 Model No Base Unit Handset Charger Unit Expandable KX-TG6541 1 (TG6541) 1 (TGA652) Up to 6 KX-TG6542 1 (TG6541) 2 (TGA652) Up to 6 © Panasonic System Networks Co., Ltd. 2011 Unauthorized copying and distribution is a violation of law.
  • Page 2 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians.

  • Page 3: Table Of Contents

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions----------------------------------------------- 4 16.3. Cabinet and Electrical Parts (Charger Unit) ------- 83 1.1. For Service Technicians --------------------------------- 4 16.4. Accessories------------------------------------------------ 84 2 Warning -------------------------------------------------------------- 4 16.5. Replacement Parts List--------------------------------- 85 2.1. Battery Caution--------------------------------------------- 4 2.2.

  • Page 4: Safety Precautions

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 1 Safety Precautions 1.1. For Service Technicians • Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires, injury or electric shock, which can be caused by improper repair work.

  • Page 5: Discarding Of P. C. Board

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 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-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 3 Specifications Standard: Bit rate: DECT (Digital Enhanced Cordless 1,152 kbit/s Telecommunications) Modulation: Number of channels: GFSK (Gaussian Frequency Shift Keying) 60 Duplex Channels RF transmission power: Frequency range: 115 mW (max.) 1.92 GHz to 1.93 GHz Voice coding :...

  • Page 7: Technical Descriptions

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 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 frequency. Refer to Frequency Table (P.58). 4.1.1. TDD Frame Format 5 ms 5 ms Up Link ( Handset - >...
  • Page 8 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.1.3. Signal Flowchart in the Radio Parts Reception A voice signal from TEL line is encoded to digital data "TXDATA" by BBIC (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-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.2. Block Diagram (Base Unit_Main)

  • Page 10: Block Diagram (Base Unit_Rf Part)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.3. Block Diagram (Base Unit_RF Part) ANT2 ANT2 ANT1 DA801 TXON RXON ANT1 KX-TG6541/6542 BLOCK DIAGRAM (Base Unit_RF Part)

  • Page 11: Circuit Operation (Base Unit)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.4. Circuit Operation (Base Unit) General Description: (BBIC, Flash Memory, EERROM) is a digital speech/signal processing system that implements all the functions of speech compression, record and playback, and memory management required in a digital telephone answering machine. The BBIC system is fully controlled by a host processor. The host processor provides activation and control of all that functions as follows.
  • Page 12 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.4.4. Power Supply Circuit/Reset Circuit The power supply voltage from AC adaptor is converted to VBAT (3.0V) in IC302. And +3.0V for peripherals and analog part is insulated from VBAT by Doubler of BBIC. Circuit Operation: +3.0V VBAT IC601...
  • Page 13 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.4.4.1. Charge Circuit The voltage from the AC adaptor is supplied to the charge circuits. +6.5V F301 CHARGE+ CHARGE-...
  • Page 14 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 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 15 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.4.6. Parallel Connection Detect Circuit/Auto Disconnect Circuit Function: In order to disable call waiting and stutter tone functions when using telephones connected in parallel, it is necessary to have a circuit that judges whether a telephone connected in parallel is in use or not. This circuit determines whether the telephone connected in parallel is on hook or off hook by detecting changes in the T/R voltage.
  • Page 16 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.4.7. Calling Line Identification (Caller ID)/Call Waiting Caller ID Function: Caller ID 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 17 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Call Waiting Caller ID Calling Identity Delivery on Call Waiting (CIDCW) is a CLASS service that allows a customer, while off-hook on an existing call, to receive information about a calling party on a waited call. The transmission of the calling information takes place almost immediately after the customer is alerted to the new call so he/she can use this information to decide whether to take the new call.

  • Page 18: Block Diagram (Handset)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.5. Block Diagram (Handset) VBAT ANT1 EEPROM 13.824 MHz VBAT CHG_DET RF part CHG_CTL RXON RSTN RESET TXON CHARGE VBAT BATTERY BBIC Receiver HSSPOUTP Headset Jack LOUT HSMIP 4.0V CN431 VBAT CHARGE HEADSET_DET (KEY) CP_OFF PUMP (BELL) KEY_LED BELL_LED...

  • Page 19: Block Diagram (Handset_Rf Part)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.6. Block Diagram (Handset_RF Part) TXON DA801 RXON KX-TGA652 BLOCK DIAGRAM (Handset_RF Part)

  • Page 20: Circuit Operation (Handset)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.7. Circuit Operation (Handset) 4.7.1. Outline Handset consists of the following ICs as shown in Block Diagram (Handset) (P.18). • DECT BBIC (Base Band IC): IC1 - All data signals (forming/analyzing ACK or CMD signal) - All interfaces (ex: Key, Detector Circuit, Charge, EEPROM, LCD) •...
  • Page 21 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.7.3. Charge Circuit Circuit Operation: When charging the handset on the Base Unit, the charge current is as follows; DC+(6.5 V)  F301  R371  R372 CHARGE+(Base)  CHARGE+(Handset)  Q4  D7 F1  BATTERY+... Battery... BATTERY-  R45  GND  CHARGE-(Handset) CHARGE-(Base)  GND  DC-(GND) In this way, the BBIC on Handset detects the fact that the battery is charged.

  • Page 22: Circuit Operation (Charger Unit)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.8. Circuit Operation (Charger Unit) Charge control is executed at handset side so that the operation when using charger is also controlled by handset. Refer to Circuit Operation (Handset) (P.20) AC Adaptor The route for this is as follows: DC+pin of J1(+)  F1  R1  CHARGE+pad  Handset  CHARGE-pad  DC-pin of J1(-).

  • Page 23: Signal Route

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 4.9. Signal Route ROUTE SIGNAL ROUTE HANDSET TX HANDSET MIC - R73/74 - C11/13 - RA4 - IC1(22/23) - <HANDSET_RF_TX_ROUTE> - ANT. --- ---ANT. - <BASE_UNIT_RF_RX_ROUTE> - IC501(46/47 - 28) - R181 - C184 - Q161 - Q141 - D101 - L101/[L102 - P101] - T/R(TEL LINE)
  • Page 24 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB RF part signal route SIGNAL ROUTE ROUTE HANDSET RF IC1(44/45) - L809 - C812 - DA801 - C895 - ANT [ TX_ROUTE ] HANDSET RF ANT - C895 - DA801 - C826 - IC1(46/47) [ RX_ROUTE ] IC501(44/45) - C812 - L809 - DA801 - C895 - DA802 - C893/C894 - ANT1/ANT2...

  • Page 25: Location Of Controls And Components

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 5 Location of Controls and Components Refer to the Operating Instructions. Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server. 6 Installation Instructions Refer to the Operating Instructions. Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server.

  • Page 26: Test Mode

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 8 Test Mode 8.1. Engineering Mode 8.1.1. Base Unit Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. Soft keys {OFF} Naviga tor key/ (Volume) key {FLASH} {CALL WAIT}...
  • Page 27 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Frequently Used Items (Base Unit) ex.) Items Address Default Data New Data Remarks Frequency 00 07 / 00 08 00/01 Use these items in a READ-ONLY mode to confirm the contents. Careless rewriting may 00 02 ~ 00 06 Given value cause serious damage to the computer system.
  • Page 28 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 8.1.2. Handset Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. Soft keys {OFF} Naviga tor key/ (Volume) key {FLASH} {CALL WAIT} Dial keypad H/S key operation H/S LCD 1).
  • Page 29 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Frequently Used Items (Handset) ex.) Items Address Default Data New Data Possible Adjusted Possible Adjusted Remarks Value MAX (hex) Value MIN (hex) Battery Low 00 11 / 00 12 00 / 00 (*2) Frequency 00 07 / 00 08...

  • Page 30: Service Mode

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 9 Service Mode 9.1. How to Clear User Setting (Handset Only) Handset Press simultaneously until a beep sound is heard. Then single handset is initialized. 2 5 8 0 (The contents of user setting are reset to factory default)

  • Page 31: Troubleshooting Guide

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10 Troubleshooting Guide 10.1. Troubleshooting Flowchart FLOW CHART Not working Power ON Base Unit Check Power Not playback Playback Pre-Message Check Playback Not record (*1) Record Check Record Link No link No charge Battery Charge Check Battery Charge Check Link...
  • Page 32 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10.1.1. Check Power 10.1.1.1. Base Unit Is the AC Adaptor inserted into AC outlet? (*1) AC Adaptor. Is output voltage of AC adaptor 6.5 V? Check Check Power Supply Circuit. Check VDDC (1.2 V): Test Point [VDDC] RSTN: Reset = "High"? Check Reset Circuit.
  • Page 33 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10.1.2. Check Record 10.1.2.1. Base Unit Not record Incoming Message Check Telephone Line Interface Check Bell signal. [Bell]. Check Telephone Line Interface Does the unit catch line? [OFF HOOK]. Check Line In: Pin 16 of BBIC. Check ICM Recording in Signal Route.
  • Page 34 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB <How to change the Auto Disconnect activation time and VOX level> A) 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. To solve this problem, try changing the Auto Disconnect activation through the procedures below.
  • Page 35 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB B) Vox level: It makes easier to detect a small voice (caller) by raising the sensitivity of VOX level. Therefore, the recording of TAM is not turned off during a detection. 1) ~ 2) are same as (A). 3) Press "5","1","1".
  • Page 36 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10.1.3. Check Playback 10.1.3.1. Base Unit Check VDDC (1.2 V): Test Point [VDDC] Check Power Supply Circuit. Check output of BBIC (Pin 29, 31). Check BBIC and Flash Memory. Check Speaker and its surroundings. Cross Reference: Note: Power Supply Circuit/Reset Circuit (P.12) Flash Memory is IC601.
  • Page 37 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10.1.5. Check Link 10.1.5.1. Base Unit Does Base Unit make link with normal working Base Unit is OK. Check Handset. Handset? Is the voltage of VBAT about 3.0 V? Check around Power Supply Circuit. Is the voltage of VDDC about 1.2 V? Adjust +3.0V voltage to 3.0 V.
  • Page 38 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10.1.5.2. Handset Does Handset make link with Base Unit? Handset is OK. Check Base Unit. (Correct working unit) Is the voltage of TP VBAT about 2.2~2.8 V? Check the batteries. Check around Power Supply Circuit/Reset Circuit. Is the voltage of TP VDDC about 1.2 V? Is the voltage of TP 3.0 V about 3.0 V?
  • Page 39 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10.1.6. Check the RF part 10.1.6.1. Finding out the Defective part 1. Prepare Regular HS(*1) and Regular BU(*2). 2. a. Re-register regular HS (Normal mode) to base unit (to be checked). If this operation fails in some ways, the base unit is defective.
  • Page 40 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10.1.6.2. RF Check Flowchart Each item (1 ~ 6) of RF Check Flowchart corresponds to Check Table for RF part (P.41). Please refer to the each item. Start Link Control Check BBIC interface parts. confirmation signal (RF Block <->BBIC on BU/HS P.C.B)
  • Page 41 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 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 42 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 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 43 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10.1.7. Registering a Handset to a Base Unit The supplied handset and base unit are pre-registered. If for some reason the handset is not registered to the base unit, re-register the handset. Handset: {MENU} i {#}{1}{3}{0} Base unit: Press and hold {LOCATOR} for 5 seconds until the registration tone sounds.
  • Page 44 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 10.1.10. Check Handset Transmission Check MIC of handset. Check handset Tx in Signal Route. Cross Reference: Signal Route (P.23) 10.1.11. Check Handset Reception Check speaker of handset. Check handset Rx in Signal Route. Cross Reference: Signal Route (P.23) Note: When checking the RF part, Refer to Check the RF part (P.39).

  • Page 45: Disassembly And Assembly Instructions

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 11 Disassembly and Assembly Instructions 11.1. Disassembly Instructions 11.1.1. Base Unit Remove the 5 screws to remove the cabinet cover. Remove the solders. Solders Solders Remove the screw.
  • Page 46 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Remove the parallel wire to remove the main P.C. board. Remove the 2 screws to remove the jack holder. Remove the 4 screws to remove the oprational P.C. board.
  • Page 47 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 11.1.2. Handset 2 screws Remove the 2 screws. Insert a plastic card. (Ex. Used SIM card etc.) Cabinet body between the cabinet body and the cabinet cover, then pull it along the gap to open the cabinet. Cabinet cover Likewise, open the other side of the cabinet.
  • Page 48 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 11.1.3. Charger Unit 2 charge terminals...

  • Page 49: How To Replace The Handset Lcd

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 11.2. How to Replace the Handset LCD Note: The illustrations are simplified in this page. They may differ from the actual product. P. C. board Vertical Interval Tolerance Peel off the FFC (Flexible Flat Cable) from 0.2 mm the LCD, in the direction of the arrow. Take care to ensure that the foil on the P.C.

  • Page 50: Measurements And Adjustments

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 12 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.31) 12.1. Equipment Required • Digital multi-meter (DMM): it must be able to measure voltage and current.
  • Page 51 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 12.2.2. Connections (Handset) Connect the DC Power or Battery to BATT+ and BATT-. Connect the JIG cable GND (black) to GND. Connect the JIG cable UTX (yellow) to UTX and URX (red) to URX. UTX (yellow) To Serial Port...
  • Page 52 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 12.2.3. How to install Batch file into P.C. Insert the Batch file CD-ROM into CD-ROM drive and copy PNZZTG**** folder to your PC (example: D drive). <Example for Windows> On your computer, click [Start], select Programs Open an MS-DOS mode window.

  • Page 53: Adjustment Standard (Base Unit)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 12.3. Adjustment Standard (Base Unit) When connecting the simulator equipment for checking, please refer to below. 12.3.1. Bottom View Note: (*1) is referred to No.2 of Check Check Table for RF part (P.41) (*2) is referred to Power Supply Circuit/Reset Circuit (P.12)

  • Page 54: Adjustment Standard (Charger Unit)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 12.4. Adjustment Standard (Charger Unit) When connecting the simulator equipment for checking, please refer to below. 12.4.1. Bottom View Digital Volt Meter /2 W DC POWER DC 6.5 V...

  • Page 55: Adjustment Standard (Handset)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 12.5. Adjustment Standard (Handset) When connecting the simulator equipment for checking, please refer to below. 12.5.1. Component View PNLB1714Z KX-TGA65X ANT_TP RECEIVER C505 C152 C896 C138 R507 C859 C814 C812 C820 C813 C822 C810 R807 C805 C806 C188 R509 CHG_DET 3.0V...

  • Page 56: Things To Do After Replacing Ic Or X'tal

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 12.6. Things to Do after Replacing IC or X'tal If repairing or replacing EEPROM and X'tal, it is necessary to download the required data such as Programming data or adjustment data, etc. in memory. The set doesn't operate if it is not executed.
  • Page 57 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 12.6.1.2. Handset First, operate the PC setting according to The Setting Method of JIG (P.50). Then download the appropriate data according to the following procedures. Items How to download/Required adjustment EEPROM (IC3) Adjusted parameter data is stored in memory.

  • Page 58: Frequency Table

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 12.7. 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 59: Miscellaneous

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 13 Miscellaneous 13.1. How to Replace the LLP (Leadless Leadframe Package) IC Note: This description is only applied on the model with Shield case. 13.1.1. Preparation • PbF (: Pb free) Solder • Soldering Iron Tip Temperature of 700 F ± 20 F (370 C ± 10 C) Note: We recommend a 30 to 40 Watt soldering iron.
  • Page 60 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 13.1.4. How to Install the IC 1. Place the solder a little on the land where the radiation GND pad on IC bottom is to be attached. Soldering Iron Land Solder P.C.Board 2. Place the solder a little on the land where IC pins are to be attached, then place the IC.

  • Page 61: Terminal Guide Of The Ics, Transistors And Diodes

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 13.2. Terminal Guide of the ICs, Transistors and Diodes 13.2.1. Base Unit (Reverse View) PNWI16541BXH C0EBE0000124 B1ACGP000008 C0CBAYG00016 C2HBCY000065 PNWI26531BXH 2SC6054JSL, PQVTBF822T7 UN9219J, 2SB1218A B1GFCFEN0011 2SD0874AS PQVDMD5S UNR92A2J0L Cathode Cathode Anode MA111, Anode MANV250GEL B0ECKM000008 B0DDCD000001 LNJ237W82RA 13.2.2. Handset...

  • Page 62: Schematic Diagram

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 14 Schematic Diagram 14.1. For Schematic Diagram 14.1.1. Base Unit (Schematic Diagram (Base Unit_Main)) Notes: 1. DC voltage measurements are taken with voltmeter from the negative voltage line. Important Safety Notice: Components identified by mark have special characteristics important for safety.
  • Page 63 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Memo...

  • Page 64: Schematic Diagram (Base Unit_Main)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 14.2. Schematic Diagram (Base Unit_Main) ANT2 VCCA R807 C892 RXON ANT2 C822 C827 W 0.2mm W 0.15mm L 20mm 1st layer 3rd layer C894 C826 W 0.2mm L 10mm 1st layer C820 1.5p ANT1 DA801 C805 C895 L809 C812 2.7p...
  • Page 65 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB +3.0V Q143 Q141 REFERENCE R160 1XX : TEL LIN E 3XX : POWER, CHARG E 4XX : MIC, S P Q161 5XX : BBIC R141 6XX : FLASH, EEPROM, KEY, LC D 7XX : FOR DK/BT 100k 8XX : RF...

  • Page 66: Schematic Diagram (Base Unit_Operation)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 14.3. Schematic Diagram (Base Unit_Operation) LED909 BT_HS_LED (R) LED910 BT_HS_LED (G) CELL1 CELL2 BT_HS KEYS_F MEMO KEYIN4 ERASE KEYS_C 9pin:TG6541 MSG2 13pin:TG6581 KEYS_D KEYS_E MSG1 SKIP KEYS_A STOP DOWN LOCAT/INT KEYS_B KEYIN5 FLASH MUTE CONF KEYIN6 KEYIN2 LED906 CELL1_LED (G)
  • Page 67 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Memo...

  • Page 68: Schematic Diagram (Handset_Main)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 14.4. Schematic Diagram (Handset_Main) Charge Current VBAT VBAT BATT+ 2.5A When on Charge BATT- VBAT 3.0V To Battery CHG_CUR 3.0V C172 CHG(+) 0.1u CHG+ To Charge Terminal E_WP EEP_WP CHG- E_SCL EEP_SCL CHG(-) R43 0 E_SDA EEP_SDA EEP_SCL CHG_CTRL...
  • Page 69 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB R807 RXON W 0.15mm L 20mm 3rd layer ANT_TP C826 RX_RF W 0.15mm/L 7mm W 0.5mm /L 5mm 1st layer L809 C812 C895 8.2n 1.3p TX_RF DA801 W 0.2mm W 0.15mm L 10.0mm L 20mm 1st layer 3rd layer R806 W 0.15mm...

  • Page 70: Schematic Diagram (Handset_Led)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 14.5. Schematic Diagram (Handset_LED) KX-TGA652 SCHEMATIC DIAGRAM (Handset_LED)

  • Page 71: Schematic Diagram (Charger Unit)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 14.6. Schematic Diagram (Charger Unit) R1 12 SCHEMATIC DIAGRAM (Charger Unit)
  • Page 72 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Memo...

  • Page 73: Printed Circuit Board

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 15 Printed Circuit Board 15.1. Circuit Board (Base Unit_Main) 15.1.1. Component View KEYIN4 MSG_LED KEYS_C ANS_LED KEYS_D KEYIN1 KEYIN3 KEYS_E 2APVCC KEYS_A SP_LED KEYS_B KEYIN5 KEYIN6 MICP MICN KEYIN2 R333 C302 R331 R371 C331 RA502 R302 D331 R502 R332...
  • Page 74 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 15.1.2. Bottom View KX-TG6541/6542 CIRCUIT BOARD (Base Unit_Main (Bottom View))

  • Page 75: Circuit Board (Base Unit_Operation)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 15.2. Circuit Board (Base Unit_Operation) ANSWER ON ERASE CELL1 SKIP CELL2 STOP LOCAT/INT DOWN BT_HS PNLB1750Z KX-TG654 /658 H PNLP6541/6581H2Z MEMO CONF MUTE FLASH REDIAL HOLD WBX01 R902 WBX02 R901 TG658 TG654 KX-TG6541/6542 CIRCUIT BOARD (Base Unit_Operation (Component View))
  • Page 76 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Memo...

  • Page 77: Circuit Board (Handset_Main)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 15.3. Circuit Board (Handset_Main) 15.3.1. Component View PNLB1714Z KX-TGA65X ANT_TP RECEIVER C505 C152 C896 C138 R507 C859 C814 C812 C820 C813 C822 C810 R807 C805 C806 C188 R509 CHG_DET 3.0V 4.0V CP_CTRL CHG_CTRL Q51 Q52 C127 C110 C172 R562...
  • Page 78 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 15.3.2. Bottom View CN3_C SOFT1 MENU SOFT2 TALK LED2 LED5 LEFT RIGHT FLASH DOWN KX-TGA652 CIRCUIT BOARD (Handset_Main (Bottom View))

  • Page 79: Circuit Board (Handset_Led)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 15.4. Circuit Board (Handset_LED) PNLB1763Z KX-TGA652 CIRCUIT BOARD (Hanset_LED (Bottom View))

  • Page 80: Circuit Board (Charger Unit)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 15.5. Circuit Board (Charger Unit) 15.5.1. Component View CIRCUIT BOARD (Charger unit (Component View)) 15.5.2. Bottom View TP4 (GND) CIRCUIT BOARD (Charger unit (Bottom View))

  • Page 81: Exploded View And Replacement Parts List

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 16 Exploded View and Replacement Parts List 16.1. Cabinet and Electrical Parts (Base Unit) PCB2 MIC1 PCB1 Ref.No. Figure 2.6 x 8mm...

  • Page 82: Cabinet And Electrical Parts (Handset)

    (*1) This cable is fixed by welding. Refer to How to Replace the Handset LCD (P.49). (*2) The rechargeable Ni-MH battery HHR-4MRT is available through sales route of Panasonic. (*3) Attach the SPACER (No. 120) to the exact location described above.

  • Page 83: Cabinet And Electrical Parts (Charger Unit)

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 16.3. Cabinet and Electrical Parts (Charger Unit) 200-1 PCB200 200-2 200-3 200-4 Ref.No. Figure φ 2×8 mm...

  • Page 84: Accessories

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 16.4. Accessories...

  • Page 85: Replacement Parts List

    KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 16.5. Replacement Parts List Safety Ref. Part No. Part Name & Description Remarks 1. RTL (Retention Time Limited) PNBC1001Z3 BUTTON, MESSAGE AS-HB Note: PNJK1082Z KEYBOARD SWITCH The “RTL” marking indicates that its Retention Time is PNHR1278Z GUIDE, JACK PS-HB...
  • Page 86 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks R145 ERJ2GEJ222 2.2k C343 ECUE1H100DCQ 10p R151 ERJ2GEJ104 100k C351 ECUV1C105KBV 1 R152 ERJ2GEJ474X 470k C451 PQCUV0J106KB 10 R160 ERJ3GEYJ911 C452...
  • Page 87 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks LED904 LNJ237W82RA (COILS) C812 PQLQR4C8N2J COIL 16.5.2. Handset G1C1R0MA0072 COIL G1CR18J00004 COIL 16.5.2.1. Cabinet and Electrical Parts (RESISTOR ARRAYS) D1H83314A013 RESISTOR ARRAY...
  • Page 88 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 16.5.2.3. LED Board Parts Safety Ref. Part No. Part Name & Description Remarks ECUV1A105KBV 1 ECJ1VB0G106M 10 Safety Ref. Part No. Part Name & Description Remarks ECUE0J105KBQ 1 ECUV1A105KBV 1 PCB101 PNWP2TGA652R LED P.C.BOARD ASS'Y (RTL) ECUE1A104KBQ 0.1 (LED) ECUE1A104KBQ 0.1...
  • Page 89 KX-TG6541BXB/KX-TG6542BXB/KX-TGA652BXB 16.5.6. Fixtures and Tools Note: (*1) See Equipment Required (P.50), and The Setting Method of JIG (P.50) (*2) When replacing the Handset LCD, See How to Replace the Handset LCD (P.49) Safety Ref. Part No. Part Name & Description Remarks...

This manual is also suitable for:

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