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Panasonic KX-TGC450G Service Manual
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Panasonic KX-TGC450G Service Manual

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Digital Cordless Phone
Digital Cordless Answering System
KX-TGC450G
Model No.
KX-TGC460E
KX-TGC460G
KX-TGC462E
KX-TGC462G
KX-TGC463E
KX-TGC463G
KX-TGC464E
KX-TGCA42E
KX-TGCA42EX
B; Black Version
[Version 5.0]
© Panasonic Entertainment & Communication Co., Ltd.
2020-2022
Unauthorized copying and distribution is a violation of law.
Order No.KM42006192CE

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Summary of Contents for Panasonic KX-TGC450G

  • Page 1 Digital Cordless Phone Digital Cordless Answering System KX-TGC450G Model No. KX-TGC460E KX-TGC460G KX-TGC462E KX-TGC462G KX-TGC463E KX-TGC463G KX-TGC464E KX-TGCA42E KX-TGCA42EX B; Black Version [Version 5.0] © Panasonic Entertainment & Communication Co., Ltd. 2020-2022 Unauthorized copying and distribution is a violation of law.
  • Page 2 ("Professionals"). Any attempt to service or repair the product by anyone else could result in serious injury and even death. Panasonic shall not be responsible, to the extent permitted by applicable law, for any damages, losses, costs, expenses, death, injury, claims, decree, proceedings, and/or judgement, arising out of, in connection with, or relating to, any use and/or misuse of this service manual by users other than Professionals.

  • Page 3: Safety Precautions

    1 Safety Precautions 1.1 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. 4.

  • Page 4: Battery Caution

    2 Warning 2.1 Battery Caution Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to the instructions. Warnung 2.1 Vorsichtshinweis zum Akku Explosionsgefahr bei Verwendung nicht geeigneter Akkus. Entsorgen Sie gebrauchte Akkus gemäß den Anweisungen. 2.2 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...
  • Page 5 2.2. Informationen zum bleifreien Löten (PbF: bleifrei, Pb free) Hinweis: In den unten stehenden Informationen steht Pb, das Symbol für Blei im Periodensystem der Elemente, für bleihaltiges Standardlötmittel. Der Begriff PbF-Lötmittel bezieht sich auf das bleifreie Lötmittel, das wir bei unserem Herstellungsprozess verwenden. Es besteht aus Zinn (Sn), Silber, (Ag) und Kupfer (Cu).

  • Page 6: Suggested Pbf Solder

    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 7: Insulation Resistance Test

    2.3 Insulation Resistance Test 1. Unplug the AC inlet and connect the two prongs of the plug with a jumper wire. 2. Measure the resistance value with ohmmeter between the jumpered AC plug and all the terminals as shown in following figures 3.
  • Page 8 2.5 Disposal of Old Equipment and Batteries (Only for European Union and countries with recycling systems) 1 , 2 These symbols ( ) on the products, packaging, and/or accompanying documents mean that used electrical and electronic products and batteries must not be mixed with general household waste.
  • Page 9 Entsorgung von Altgeräten und Batterien (Nur für die Europäische Union und Länder mit Recyclingsystemen) Diese Symbole ( 1 , 2 ) auf den Produkten, der Verpackung und/oder den Begleitdokumenten, bedeutet, dass gebrauchte elektrische und elektronische Produkte sowie Batterien nicht in den allgemeinen Hausmüll gegeben werden dürfen.

  • Page 10: Specifications

    3 Specifications ● Standard: DECT (Digital Enhanced Cordless Telecommunications), GAP (Generic Access Profile) ● Frequency range: 1.88 GHz to 1.90 GHz ● RF transmission power: Approx. 10 mW (average power per channel) 250 mW (max.) ● Power source: 100–240 V AC, 50/60 Hz ●...

  • Page 11: Technical Descriptions

    4 Technical Descriptions 4.1 Block Diagram (Base Unit_Main) - 11 -...
  • Page 12 4.2 Block Diagram (Base Unit_RF Part) ANT1 - 12 -...

  • Page 13: Circuit Operation (Base Unit)

    4.3 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 14: Power Supply Circuit/Reset Circuit

    4.3.4 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 IC501 IC302 VBAT pin 15 5.5V...

  • Page 15: Charge Circuit

    4.3.4.1 Charge Circuit The voltage from the AC adaptor is supplied to the charge circuits. +5.5V F301 CHARGE+ CHARGE- - 15 -...
  • Page 16 4.3.5 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 17: Transmitter Block

    4.3.6 Transmitter/Receiver ● Audio Circuits and DTMF tone signal circuits. Base Unit and Handset mainly consist of RF Module and DECT BBIC. Base Unit and Handset transmit/receive voice signal and data signal through the antenna on carrier frequency. Signal Path: *Refer to [4.6 Signal Route].

  • Page 18: Block Diagram (Handset)

    4.4 Block Diagram (Handset) - 18 -...

  • Page 19: Circuit Operation (Handset)

    4.5 Circuit Operation (Handset) 4.5.1 Outline Handset consists of the following ICs as shown in [4.4 Block Diagram (Handset)]. ● 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 20: Signal Route

    4.6 Signal Route ROUTE SIGNAL ROUTE MIC (+) module (56) module (36) ANT to BASE HANDSET TX module (9) MIC (–) Ant 1 module (36) module (12) Rcv + HANDSET RX Rcv - module (13) HANDSET MIC (+) module (56) module (36) ANT to BASE SP-Phone TX module (9)
  • Page 21 RF part signal route SIGNAL ROUTE ROUTE HANDSET RF module 36 - ANT [ TX_ROUTE ] HANDSET RF ANT - module (36) [ RX_ROUTE ] BASE UNIT RF IC501(44/45) - C819 - C872 - ANT [ TX_ROUTE ] BASE UNIT RF ANT - C872 - C895 - IC501(46/47) [ RX_ROUTE ] Note:...

  • Page 22: Location Of Controls And Components

    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. - 22 -...

  • Page 23: Installation Instructions

    6 Installation Instructions Refer to the Operating Instructions Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server. - 23 -...

  • Page 24: For Service Hint

    7 Operating Instructions Refer to the Operating Instructions Note: You can download and refer to the Operating Instructions (Instruction book) on TSN Server. 7.1 For Service Hint Items Contents You could use other rechargeable batteries sold in a market, but the unit is not guaranteed to work Battery properly.

  • Page 25: Test Mode

    8 Test Mode 8.1 Engineering Mode 8.1.1 Base Unit 8.1.1.1 For G Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. } (Off/Power) Soft keys Navigator key/ (Volume) key/ (Phonebook)/ (Talk) (Caller list) key/ (Redial) key/ /ECO Dial keypad...
  • Page 26 8.1.1.2 For E Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. MENU } (Off/Power) Soft keys Navigator key/ (Volume) key/ (Phonebook)/ (Talk) (Caller list) key/ (Redial) key/ /ECO Dial keypad R: Recall/Flash ECO: Eco mode shortcut key This pictured model is KX-TGC460.
  • Page 27 Frequently Used Items (Base Unit) ex.) Items Adress Default Data New Data Remarks C-ID (FSK) sensitivity 09 16/09 17 28/00 1C/00 14/00 When hex changes from “28/00” to “1C/00” or (3 dB up) (6 dB up) “14/00”, gain increases by 3 dB or 6 dB. C-ID (DTMF) sensitivity 07 EF/07 F0 00/08...
  • Page 28 8.1.2 Handset 8.1.2.1 For G Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. } (Off/Power) Soft keys Navigator key/ (Volume) key/ (Phonebook)/ (Talk) (Caller list) key/ (Redial) key/ /ECO Dial keypad R: Recall/Flash ECO: Eco mode shortcut key H/S key operation...
  • Page 29 8.1.2.2 For E Important: Make sure the address on LCD is correct when entering new data. Otherwise, you may ruin the unit. MENU } (Off/Power) Soft keys Navigator key/ (Volume) key/ (Phonebook)/ (Talk) (Caller list) key/ (Redial) key/ /ECO Dial keypad R: Recall/Flash ECO: Eco mode shortcut key H/S LCD...
  • Page 30 Frequently Used Items (Handset) ex.) Possible Adjusted Possible Adjusted Items Address Default Data New Data Remarks Value MAX (hex) Value MIN (hex) Sending Level 07 76 Adjusted value Given value (*2) Receiving Level 07 77 Adjusted value Given value (*3) Battery Low 00 09 00 07/...
  • Page 31 8.2 VES area layout in Flash (Handset) 8.2.1 Scope The purpose of this section is to describe the layout of the VES (Virtual EEPROM Storage) area in FLASH (IC4) for the Handset. The VES area contains hardware, software, and user specific parameters. Some parameters are set during production of the handset, some are set by the user when configuring the handset, and some during normal use of the phone.

  • Page 32: How To Clear User Setting

    8.3 How to Clear User Setting Units are reset to the Factory settings by this operation (Erase recorded Voice messages, stored Phone numbers, Caller list and etc.) Note: ● Some menus are not reset. Refer to [7 Operating Instructions]. ● The reset menus differ depending on the following operations. ●...

  • Page 33: Troubleshooting Guide

    9 Troubleshooting Guide 9.1 Troubleshooting Flowchart FLOW CHART Not working Power ON Base Unit Check Power Not playback Playback Pre-Message Check Playback Not record Record Check Record Link No link No charge Battery Charge Check Battery Charge Check Link Range Check the RF part No voice Handset Voice Transmission Check Handset Transmission...

  • Page 34: Check Power

    9.1.1 Check Power 9.1.1.1 Base Unit Is the AC Adaptor inserted into AC outlet? (*1) AC Adaptor. Is output voltage of AC adaptor 5.5 V? Check (*2) Check Power Supply Circuit. Check VDDC (1.2 V): Test Point [VDDC] (*2) RSTN: Reset = "High"? Check Reset Circuit.

  • Page 35: Check Record

    9.1.2 Check Record 9.1.2.1 Base Unit A) 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. Check Auto Disconnect Circuit.

  • Page 36: Check Battery Charge

    9.1.4 Check Battery Charge 9.1.4.1 Base Unit Plug in the AC Power source. Charge Handset on Base Unit. Check Charge Circuit of Base Unit. Is the voltage of two charge contacts about 5.5 V or more? Check Handset. Check Charge Contacts at Base Unit from mechanical point of view in order to check if a bad contact between Base unit and Handset.

  • Page 37: Check Link

    9.1.5 Check Link 9.1.5.1 Base Unit Does Base Unit make link with normal working Base Unit is OK. Check Handset. Handset? Check around Power Supply Circuit. (*1) Is the voltage of VBAT about 3.0 V? (*1) Is the voltage of VDDC about 1.2 V? (*1) Is the voltage of +3.0V about 3.0 V? (*2)
  • Page 38 9.1.5.2 Handset Does Handset make link with Base Unit? Handset is OK. Check Base Unit. (Correct working unit) (*1) Is the voltage of "1.8V" about 1.8 V? Adjust 1.8V voltage to 1.8 V. Check around Power Supply Circuit/Reset Circuit . (*1) Is the voltage of CP3V about 3.0 V? (*1) Is the voltage of CP4V about 4.0V?

  • Page 39: Check The Rf Part

    9.1.6 Check the RF part 9.1.6.1 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. b.
  • Page 40 9.1.6.2 RF Check Flowchart Each item (1 ~ 6) of RF Check Flowchart corresponds to [9.1.6.3 Check Table for RF part] Please refer to the each item. Start Link Control Check BBIC interface parts. confirmation signal (RF Block <->BBIC on BU/HS P.C.B) Normal confirmation X'tal...
  • Page 41 9.1.6.3 Check Table for RF part Item BU (Base Unit) Check HS (Handset) Check Link Confirmation Normal Register Regular HS to BU (to be checked). Register HS (to be checked) to Regular BU. Press [Talk] key of the Regular HS to Press [Talk] key of the HS to establish link.
  • Page 42 9.1.6.4 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 Register Regular HS to BU (to be checked). Register HS (to be checked) to Regular BU. (TX Power check) Set TX Power of the BU and the Regular HS Set TX Power of the HS and the Regular BU...

  • Page 43: Check Handset Transmission

    9.1.7 Check Handset Transmission Check MIC of handset. Check handset Tx in Signal Route. Cross Reference: [4.6 Signal Route] 9.1.8 Check Handset Reception Check speaker of handset. Check handset Rx in Signal Route. Cross Reference: [4.6 Signal Route] Note: When checking the RF part, Refer to [9.1.6 Check the RF part] 9.1.9 Check Caller ID BASE UNIT...

  • Page 44: Check Tam Operation

    9.1.10 Check Bell Reception 9.1.10.1 Base Unit When bell signal is coming, is there bell sound Check around C101, C102, C110, C112, C113, R113, signal at BBIC (IC501 5pin : BELL)? R114, R111, R112, P101, D113, Q111 Check IC501 of Base Unit. Check around IC501 (VDD_PA), C507, C475, C477, C479 9.1.10.2 Handset When bell signal coming, is there bell sound signal...

  • Page 45: Troubleshooting By Symptom (Base Unit)

    9.2 Troubleshooting by Symptom (Base Unit) If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester (*1) or not. Remedy (*2) Symptom You have DECT Tester. You don’t have DECT Tester. (Model Number: CMD60) You cannot dial.
  • Page 46 Check Check or Items Procedure Point Replace Parts Connect Telephone Socket to DTMF tester. (Load=600 Ω) DTMF Generator IC501, L101, Check C184, D141 Link Handset and push dial key. Confirm DTMF character. Confirm that the high Group is -8.0 dBm ± 2.0 dB. Confirm that the low Group is -10.5dBm ±...

  • Page 47: Troubleshooting By Symptom (Handset)

    9.3 Troubleshooting by Symptom (Handset) If your unit has below symptoms, follow the instructions in remedy column. Remedies depend on whether you have DECT tester (*1) or not. Remedy (*2) Symptom You have DECT Tester. You don’t have DECT Tester. (Model Number: CMD60) Battery strength is not indicated correctly by Battery icon.
  • Page 48 (F)* Battery Monitor Check Apply 2.25 V between BATT+ and BATT- IC1, R45 Execute the command sendchar PAD sendchar LED 0 sendchar CRX 0 1 sendchar AD1 It assumes that the return value is XX. a) XX: 70: No need to adjust b) XX: 66 ~ 6F: Need to adjust XX: 71 ~ 7A: Need to adjust Write AD value of 2.25 V to VES.
  • Page 49 Audio Check and Link to BASE which is connected to Line Simulator. IC1, C12, C11, Confirmation C13, MIC, R23, Set line voltage to 48 V and line current to 50 mA. RA7, C70, C71, Input -45 dBm (600 Ω)/1 kHz to MIC of Handset. Measure the Level at Line RA4, C68, C69 I/F and distortion level.
  • Page 50 10 Disassembly and Assembly Instructions 10.1 Disassembly Instructions 10.1.1 Base Unit 10.1.1.1 KX-TGC450 Remove the 2 screws to remove the cabinet cover. Remove a screw to remove the jack holder. Screw Unsolder to remove the charge terminals. Jack Holder Solder - 50 -...
  • Page 51 Flip the Main P. C. Board and unsolder to remove the Main P.C Board. Solder Main P. C. Board - 51 -...
  • Page 52 10.1.1.2 KX-TGC460 Remove the 2 screws to remove the cabinet cover. Remove a screw to remove the jack holder. Screw Jack Holder Solders Unsolder to remove the charge terminals and speaker. - 52 -...
  • Page 53 Flip the Main P. C. Board and unsolder to remove the Main P.C Board. Solder Main P. C. Board Remove 2 screws. Remove the Operational P. C. Board Screw Operational P. C. Board - 53 -...
  • Page 54 10.1.2 Handset 2 screws Remove the 2 screws. Cabinet body Insert a plastic card. (Ex. Used SIM card etc.) 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 55: Charger Unit

    10.1.3 Charger Unit Solders Charge Terminals - 55 -...

  • Page 56: How To Replace The Handset Lcd

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

  • Page 57: Measurements And Adjustments

    11 Measurements and Adjustments This chapter explains the measuring equipment, the JIG connection, and the PC setting method necessary for the measurement [9 Troubleshooting Guide] 11.1 Equipment Required • Digital multi-meter (DMM): it must be able to measure voltage and current. • Oscilloscope. •...

  • Page 58: How To Install Batch File Into P.c

    11.2.2 How to install Batch file into P.C. Insert the Batch file CD-ROM into CD-ROM drive and copy PNZZTG**** folder to your PC (example: D drive). <Example for Windows> On your computer, click [Start], select Programs Open an MS-DOS mode window. (All Programs for Windows XP/Windows Server 2003), then click MS-DOS Prompt.

  • Page 59: Adjustment Standard (Base Unit)

    11.3 Adjustment Standard (Base Unit) When connecting the simulator equipment for checking, please refer to below. 11.3.1 Bottom View (H)(I)(J)(K)(L) VBAT (A) DECT Tester CTS60 ANT1 Short A N t 1 _ S h o r t A N T 1 A N T 1 _ S - G N D I C 6 1 1 R S T N S T M / C K M / P 1 5...

  • Page 60: The Setting Method Of Jig (Handset)

    11.4 The Setting Method of JIG (Handset) This section explains the PC setting to use command required in [9.3.1 Check Point (Handset)] (Preparation) • Serial JIG cable: PQZZ1CD300E* • PC which runs in DOS mode • Batch file CD-ROM for setting: Refer to parts list of [15.5.6 Fixtures and Tools] Note: *: If you have the JIG Cable for TCD500 series (PQZZ1CD505E), change the following values of resistance.
  • Page 61 11.4.2 How to install Batch file into P.C. Insert the Batch file CD-ROM into CD-ROM drive and copy PNZZTG**** folder to your PC (example: D drive). <Example for Windows> On your computer, click [Start], select Programs Open an MS-DOS mode window. (All Programs for Windows XP/Windows Server 2003), then click MS-DOS Prompt.

  • Page 62: Adjustment Standard (Handset)

    11.5 Adjustment Standard (Handset) When connecting the simulator equipment for checking, please refer to below. 11.5.1 Component View When measure RF, short "ANT-Short" and "ANT-Short-GND" with copper wire which length 5mm. After measure do not forget to remove the wire. R 8 0 O r a n g e C 7 0 R e d...

  • Page 63: Things To Do After Replacing Ic Or X'tal

    11.6 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. 11.6.1 How to download the data 11.6.1.1 Base Unit First, operate the PC setting according to...
  • Page 64 11.6.1.2 Handset First, operate the PC setting according to [11.2 The Setting Method of JIG] Then download the appropriate data according to the following procedures. Items How to download/Required adjustment FLASH(IC4) Adjusted parameter data is stored in 1) Please be sure to execute the following steps if you have replaced the memory.
  • Page 65 11.6.1.2.1 How to update the BBIC ● Execute COM communicator.exe 1. Initialize COM port.(Only once at first.) Select "Setting" → "Serial Port" → "Initial Settings → "OK". Setting Serial Port Initial Settings Cancel 2. Select serial port COM number. Select "Setting" → “Serial Port" → "Setting".. Fill up the "COM Options"...
  • Page 66 ● Execute COM communicator.exe again <> 1. Select “Addon”→ "ProgramLoader". 2. Select "Setting"→"Config". Fill up the "ConfigSettings". Note: (2) Select Baud Rate as 57600. If write error happens, select slower Baud Rate (example: 19200). - 66 -...
  • Page 67 3. Select download file. 4. Start download. (1) Connect Unit and 3wire jig. (2) Confirm "Turn on power to target and press download." display. (3) Power off the unit, then power on. (4) Press "Download" button again. 5. Finish download. Completed dialog means "Download finished successfully!."...
  • Page 68 11.7 RF Specification 11.7.1 Base Unit Item Value Refer to -. * TX Power 18.5 dBm ~ 25 dBm [9.2.1 Check Point (Base Unit)] Modulation -350 ± 50/+350 ± 50 kHz/div [9.2.1 Check Point (Base Unit)] Frequency Offset <±20 kHz [9.2.1 Check Point (Base Unit)] RX Sensitivity <...

  • Page 69: How To Check The Handset Speaker Or Receiver

    11.8 How to Check the Handset Speaker or Receiver 1. Prepare the digital voltmeter, and set the selector knob to ohm meter. 2. Put the probes at the speaker terminals as shown below. SPEAKER: Is the value between (+) terminal and (–) terminal about 8 ? RECEIVER: Is the value between (+) terminal and (–) terminal about 40 ?

  • Page 70: How To Replace The Flat Package Ic

    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 Preparation •...

  • Page 71: How To Install The Ic

    12.1.3 How to Install the IC 1. Temporarily fix the FLAT PACKAGE IC, soldering the two marked pins. - - - - - Temporary soldering point. *Check the accuracy of the IC setting with the corresponding soldering foil. 2. Apply flux to all pins of the FLAT PACKAGE IC. - - - - - Flux 3.

  • Page 72: How To Replace The Shield Case

    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 73: How To Install The Shield Case

    12.2.4 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. : PNMC1091Z 1. Put the shield case. 2. Solder the surroundings. - 73 -...

  • Page 74: Terminal Guide Of The Ics, Transistors And Diodes

    12.3 Terminal Guide of the ICs, Transistors and Diodes 12.3.1 Base Unit Cathode (Reverse View) PNWIATGC450G (for G) DRC9113Z0L (*2) PNWIATGC420G (for G) Anode 2SC6054JSL (*2) (for G) PNWIBTGC420G B1ABDF000017 (*1) C2HBCY000170 (*1) PNWIATGC420E (for E) B1ABCE000009 C0DBEYY00102 C2HBCY000157 DA2J10100L PNWIBTGC420E (for E) (*2) B1ABDM000001 Cathode...

  • Page 75: For Schematic Diagram

    13 Schematic Diagram 13.1 For Schematic Diagram 13.1.1 Base Unit (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. When replacing any of these components, use only the manufacture's specified parts.

  • Page 76: Base Unit (Main)

    13.2 Base Unit (Main) 13.2.1 KX-TGC450 - 76 -...
  • Page 77 13.2.2 KX-TGC460 - 77 -...

  • Page 78: Base Unit (Operation)

    13.3 Base Unit (Operation) 13.3.1 KX-TGC460 Key Matrix LOCATOR SKIP ANSWER KEYIN1 LOCATOR ERASE VOL_DOWN MESSAGE STOP VOL_UP KEYIN2 REPEAT DOWN SKIP REPEAT ERASE KEYIN3 ANS_LED MSG_LED ANS ON/OFF KEYS_C KEYS_D KEYS_E LOCATOR ERASE REPEAT DOWN SKIP KEYS_E KEYS_C KEYIN1 KEYIN2 KEYIN3 LED901 LED902 KEYS_D...

  • Page 79: Handset (Main)

    13.4 Handset (Main) 13.4.1 Main P. C. Board VBAT VBAT To Battery Charge Current ANT pattern BATT+ BATT+_ ANT-Short K0.1u [for Korea] ANT tuning pattern BATT-_ SOCp BATT- ANT-Short-GND When on Charge ANT1_TP J39p SOCn SHORT2 For Power Failure *Q10 *R10 Function *Q11 *R13 POWER...
  • Page 80 13.4.2 Module P. C. Board - 80 -...

  • Page 81: Printed Circuit Board Diagram

    14 Printed Circuit Board Diagram 14.1 Base Unit (Main) 14.1.1 Component View P N L B 2 5 7 6 Z * C 8 1 1 B L U − C 8 1 9 Z A 1 C 8 6 3 R 5 0 2 R 5 0 3 C 8 0 8 C 8 2 0...

  • Page 82: Bottom View

    14.1.2 Bottom View A N t 1 _ S h o r t A N T 1 A N T 1 _ S - G N D I C 6 1 1 R S T N S T M / C K M / P 1 5 RSTN R 5 0 7 R 5 0 8...
  • Page 83 14.2 Base Unit (Operation) 14.2.1 Component View R E F - 1 LOCATOR ERASE REPEAT DOWN SKIP P b F P N L B 2 5 7 9 Z LED901 LED902 ANSWER ANSWER1 MSG1 KX-TGC460 OPERATION BOARD (Base Unit (Component View)) - 83 -...
  • Page 84 Memo - 84 -...
  • Page 85 14.3 Handset (Main) 14.3.1 Component View R 8 0 O r a n g e C 7 0 R e d C 6 8 C 7 1 C 6 9 G r e e n PNLB2583Y* A N T 1 _ T P B l a c k R E F - 2 A N T 1 _ T P...
  • Page 86 14.3.2 Bottom View PNLB2583Y* E F - 1 LED9 LED8 LED7 SOFT_A SOFT_C RIGHT LEFT TALK LED5 LED4 LED3 LED2 SHARP LED1 LED6 ECO/R CARBON_CL1 KX-TGCA42 MAIN BOARD (Handset (Bottom View)) - 86 -...
  • Page 87 14.4 Handset (Module) 14.4.1 Component View CP4V JTAG C190 C862 P N L B 2 4 3 1 Z * T G D A / T G K A 3 x R 0 KX-TGCA42 MODULE BOARD (Handset (Component View)) 14.4.2 Bottom View P N L B 2 4 3 1 Z * T G D A / T G K A 3 x R 0 KX-TGCA42 MODULE BOARD (Handset (Bottom View)) - 87 -...

  • Page 88: Exploded View And Replacement Parts List

    15 Exploded View and Replacement Parts List 15.1 Cabinet and Electrical Parts (Base Unit) 15.1.1 KX-TGC450 PCB1 Ref.No. Figure 2.6 x 8mm - 88 -...
  • Page 89 15.1.2 KX-TGC460 (*1) (*1) CUSHION/LCD (No. 105) PCB1 PCB2 Ref.No. Figure 2.6 x 8mm Note: (*1) This SPACER is a cut from the excess parts of CUSHION/LCD (No.105).Refer to [15.2 Cabinet and Electrical Parts (Handset)] (*2) For E only. - 89 -...

  • Page 90: Cabinet And Electrical Parts (Handset)

    (*1) This cable is fixed by welding. Refer to [10.2 How to Replace the Handset LCD] (*2) The rechargeable Ni-MH Panasonic Battery is available through sales route of Panasonic. (*3) Attach the SPACER (No. 113) to the exact location described above.

  • Page 91: Cabinet And Electrical Parts (Charger Unit)

    15.3 Cabinet and Electrical Parts (Charger Unit) 200-1 200-3 200-2 200-4 200-5 201(*1) Note: (*1) For E only. - 91 -...

  • Page 92: Accessories And Packing Materials

    15.4 Accessories and Packing Materials 15.4.1 For TGC450G, KX-TGC460G, KX-TGC462G and KX-TGC463G - 92 -...
  • Page 93 15.4.2 For KX-TGC460E A101 A102 P104 P102 (*1) P103 A103, A104 P101 Note: (*1) This pad is a piece of Ref No.P102 (Pad). - 93 -...
  • Page 94 15.4.3 For KX-TGC462E P204 (*1) A201 A203 A202 P202 A204, A205 P203 P205 P201 Note: (*1) This pad is a piece of Ref No.P202 (Pad). - 94 -...
  • Page 95 15.4.4 For KX-TGC463E A303 A302 (*1) A304, A305 A303 P304 P305 (*1) P302 A301 P303 P301 Note: (*1) This pad is a piece of Ref No.P302 (Pad). - 95 -...
  • Page 96 15.4.5 For KX-TGC464E A404, A405 P404 (*1) A402 (*1) A403 P404 A401 A403 (*1) P402 P403 P405 P401 Note: (*1) This pad is a piece of Ref No.P402 (Pad). - 96 -...

  • Page 97: Replacement Parts List

    15.5 Replacement Parts List 15.5.1.1.2 KX-TGC460 Safety Ref. Part No. Part Name & Description Remarks 1. RTL (Retention Time Limited) Note: PNKM1691Z1 CABINET BODY The “RTL” marking indicates that its Retention Time is PNJK1284Y KEYBOARD SWITCH (for G) Limited. PNJK1284Z KEYBOARD SWITCH (for E) When production is discontinued, this item will PNKE2080Z1 CASE, CHARGE...
  • Page 98 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks RA151 EXB24V102JX RESISTOR ARRAY C167 ECUE1H272KBQ 0.0027 RA502 EXB28V101JX RESISTOR ARRAY C171 ECUE1A333KBQ 0.033 RA611 EXB28V332JX RESISTOR ARRAY C173 ECUE1A273KBQ 0.027 (VARISTOR) C175 ECUE1H561KBQ 560p SA101...
  • Page 99 Safety Ref. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks IC611 PNWIATGC420G IC(EEPROM)(*1) (for G) R371 ERJ8GEYJ1R0 IC611 PNWIATGC420E IC(EEPROM)(*1) (for E) R372 ERJ8GEYJ1R0 (TRANSISTORS) R501 ERJ3GEYJ100 Q111 2SC6054JSL TRANSISTOR(SI) R502 ERJ2GEJ103 Q140 B1ABCE000009 TRANSISTOR(SI)
  • Page 100 (*4) Backside of this IC has a ground plate. Refer to [12.1 How Safety Ref. Part No. Part Name & Description Remarks to Replace the Flat Package IC] C810 F1G1H1R0A765 CERAMIC CAPACITOR (*5) Supplied IC is Flat Package Type. C811 F1G1H3R0A765 CERAMIC CAPACITOR Safety Ref.
  • Page 101 Safety Ref. No. Part No. Part Name & Description Remarks Safety Ref. Part No. Part Name & Description Remarks ECUV1C105KBV C860 F1G1H1R2A765 ECUV1C105KBV C862 F1G1H1R5A765 ECUV1C105KBV 1 (for G) C863 F1G1H1R8A765 ECUE0J105KBQ 1 (for E) C865 ECUE1H100DCQ 10p C113 ECUE1H100DCQ 10p C866 ECUE1A104KBQ 0.1 (OTHERS)

  • Page 102: Fixtures And Tools

    15.5.6 Fixtures and Tools 15.5.4.3 KX-TGC462E Note: Safety Ref.No. PartNo. PartName&Description Remarks (*1) See [11.1 Equipment Required], [11.2 The Setting Method A201 PNLV226E0Q AC ADAPTOR (for Base Unit) of JIG] [11.4 The Setting Method of JIG (Handset)] A202 PNJA1191Z CORD TELEPHONE (*2) When replacing the Handset LCD, See [10.2 How to A203 PNLV233EKP...

  • Page 103: Change Information

    Main Revision Contents Change of the Issue suffix Code First Version July, 2020 KX-TGC450G, KX-TGC460G, KX-TGC462G, KX-TGC463G and KX- TGCA42EX. Add the description of new extension November, 2020 KX-TGC460E, KX-TGC462E, KX-TGC463E, KX-TGC464E and KX-TGCA42E. Add UKCA leaflet for models KX-TGC460EB, KX-TGC462EB, KX-TGC463EB, December, 2021 KX-TGC464EB.

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