Panasonic KX-TGA405B, Service Manual

Page 1: ...B KX TGA405B Digital Cordless Answering System B Black Version for U S A Handset KX TGA470B Charger Unit Model No Base Unit Handset Charger Unit Range Extender Expandable KX TG4753 1 TG4731 3 TGA470 2 1 Up to 6 KX TGA470 1 TGA470 1 Configuration for each model Range Extender KX TGA470 is also an optional accessory which contains a handset and a charger KX TG4731B Base Unit ...

Page 2: ...agrams Circuit Board Diagrams Exploded Views and Replacement Parts List It is essential that these critical parts should be replaced with manufacturer s specified parts to prevent shock fire or other hazards Do not modify the original design without permission of manufacturer IMPORTANT INFORMATION ABOUT LEAD FREE PbF SOLDERING If lead free solder was used in the manufacture of this product the pri...

Page 3: ...ts 56 12 1 Equipment Required 56 12 2 The Setting Method of JIG 56 12 3 Adjustment Standard Base Unit 60 12 4 Adjustment Standard Charger Unit 61 12 5 Adjustment Standard Range Extender 62 12 6 Adjustment Standard Handset 63 12 7 Things to Do after Replacing IC or X tal 64 12 8 Frequency Table 66 13 Miscellaneous 67 13 1 How to Replace the LLP Leadless Leadframe Package IC 67 13 2 How to Replace t...

Page 4: ...you have purchased Please call 1 800 8 BATTERY 1 800 822 8837 for information on how to recycle this battery 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 contains lead We will use PbF solder when discussing the lead free solder used in our manufacturing process which is mad...

Page 5: ...lease check the manufacturer s specific instructions for the melting points of their products and any precautions for using their product with other materials The following lead free PbF solder wire sizes are recommended for service of this product 0 3 mm 0 6 mm and 1 0 mm 2 3 Discarding of P C Board When discarding P C Board delete all personal information such as telephone directory and caller l...

Page 6: ... 550 mAh Super Heterodyne PLL synthesizer Quadrature Discriminator 13 824 MHz 100 Hz Frequency Modulation 40 bit Tone DTMF Pulse Up to 48 digits Up to 32 digits Phonebook 11 days at Standby 13 hours at Talk 0 C 40 C 32 F 104 F 20 80 relative air humidity dry Approx 54 mm 34 mm 174 mm Approx 150 g Base Unit Handset Charger AC Adaptor PNLV226Z 120 V AC 60 Hz Standby Approx 0 1 W Maximum Approx 2 0 W...

Page 7: ...ormed Handset doesn t make up duplex in no free RF channels because of interference 1 Dummy Bearer Base unit sends Dummy data to the all stand by state handsets Handsets receive that data for synchronization and monitoring request from the base unit Base unit doesn t send Dummy bearer in no free RF channels because of interference 1 Note 1 It is a feature under FCC 15 regulation and for interferen...

Page 8: ...tal data RXDATA BBIC IC1 converts RXDATA into a voice signal and outputs it to speaker Transmission Base unit A voice signal from microphone is encoded to digital data and converted into a 1 9GHz modulated radio signal by BBIC IC1 The RF signal after which is amplified in BBIC is fed to an antenna Handset As for a base unit RF RF signal is received in two antennas BBIC IC501 compares RF signal lev...

Page 9: ...USE DETECT 2 INUSE DETECT 1 RECEIVE AMP DCIN 1 DCIN 2 IC302 VCCPA VBAT_APU VBAT VCC_FE VCC_IF VCC_VCO PDN DET CHARGE_DET 3 0V DOUBOUT SCL SDA WP VDD ANS_LED SP_LED IC601 FLASH MEMORY IC611 EEPROM MEMORY KEYS LCD R151 R152 R131 R133 Q171 VBAT DL CS MSG_LED LCD_BLT KEY 1 MIP MIN 6 KEY A E CS_CDSID SCL_RST SPOUTN SPOUTP 3 0 V REGULATOR CLK DO STM CKM R371 R372 Q701 Q702 CHARGE DETECT VCCA VCC KX TG47...

Page 10: ...10 KX TG4753B KX TG470B KX TGA405B 4 3 Block Diagram Base Unit_RF Part KX TG4753 BLOCK DIAGRAM Base Unit_RF Part DA801 ANT2 ANT1 TXON RXON RXp RXn ANT2 ANT1 TXp TXn ...

Page 11: ...ge The BBIC implements synthesized Voice utilizing the built in speech detector and a Flash Memory which stored the vocabulary Caller ID demodulation The BBIC implements monitor and demodulate the FSK DTMF signals that provide CID information from the Central Office Digital Switching The voice signal from telephone line is transmitted to the handset or the voice signal from the handset is transmit...

Page 12: ... part is insulated from VBAT by Doubler of BBIC Circuit Operation 5 5V VBAT RSTN Reset pin 54 VBAT pin 10 pin 57 pin 9 pin 15 IC501 IC302 IC601 BBIC DOUBLER OUT For peripherals VDDC 1 2V AC Adaptor 3 0V REGULATOR FLASH IC611 EEPROM 3 0V STM CKM Receive Amp RF Part LCD BLT ANS LED MSG LED SP LED Startmonitor IC501 57pin VDDC 1 2 V VBAT Reset RSTN IC501_54 pin BBIC chip initialize CKM STM ...

Page 13: ...13 KX TG4753B KX TG470B KX TGA405B 4 4 4 1 Charge Circuit The voltage from the AC adaptor is supplied to the charge circuits D362 R372 R371 D361 CHARGE F301 DCP CHARGE C306 5 5V DCM ...

Page 14: ...flow T L101 D101 Q141 Q161 R163 R167 D101 L102 P101 R ON HOOK Circuit Q141 is open Q141 is connected as to cut the DC loop current and to cut the voice signal The unit is consequently in an on hook condition Pulse Dial Circuit Pin 6 of BBIC turns Q141 ON OFF to make the pulse dialing Side Tone Circuit Basically this circuit prevents the TX signal from feeding back to RX signal As for this unit TX ...

Page 15: ...is monitored at pin 17 of IC501 There is no parallel connection if the voltage is 0 54 V or higher while a parallel connection is deemed to exist if the voltage is lower Parallel connection detection when off hook When off hook the voltage is monitored at pin 18 of IC501 the presence absence of a parallel connection is determined by detecting the voltage changes If the Auto disconnect function is ...

Page 16: ...ted in an FSK Frequency Shift Keying format Data 1 is a 1200 Hz sine wave and data 0 is a 2200 Hz sine wave There are two types of the message format which can be received i e the single message format and plural message format The plural message format allows to transmit the name and data code information in addition to the time and telephone number data Also the telephone exchange service provid...

Page 17: ...K data pass the following route Telephone Line P101 L101 L102 C121 C122 R121 R122 IC501 25 24 If the unit deems that a telephone connected in parallel is in use ACK is not returned even if CAS is received and the information for the second and subsequent callers is not displayed on the portable handset display CAS CAS CPE Alerting Signal Dual Tone of 2130 Hz 2750 Hz 15 dBm 900 ohm load 80 5 ms MAR...

Page 18: ... STM CKM STM BBIC RESET CHG_CTL CHG_DET WP CLK DATA KEYSTOROBE_A E KEYIN_1 5 CHARGE Q3 MIC Receiver Headset Jack CN431 LED Monitor SP LCD CHARGE PUMP IC4 KEYS RF part ANT1 X1 13 824 MHz EEPROM VBAT BATTERY Q5 LED LCD RSTN BELL VBAT VBAT 3V 4 0V VBAT RXn RXp RXON TXp TXn TXON KX TGA470 BLOCK DIAGRAM Handset KEY_LED CP_OFF Q6 LED KEY 4V ...

Page 19: ...19 KX TG4753B KX TG470B KX TGA405B 4 6 Block Diagram Handset_RF Part KX TGA470 BLOCK DIAGRAM Handset_RF Part DA801 TXON RXON RXp RXn ANT TXp TXn ...

Page 20: ...D user setting 4 7 2 Power Supply Circuit Reset Circuit Circuit Operation When power on the Handset the voltage is as follows BATTERY 2 2 V 2 6 V BATT F1 BBC1 IC1 10 pin The Reset signal generates IC1 54 pin and 1 8 V Startmonitor IC1 57pin VDDC 1 2 V VBAT Reset RSTN IC1_54 pin BBIC chip initialize CKM STM GND BATTERY 2CELL BBIC 3 0V 3 0V DOUBLER OUT Charge Pump For all peripherals 3 0V 3 0V EEPRO...

Page 21: ...h check the voltage from battery The detected voltage is as follows Battery Low Battery voltage V Batt 2 35 V 50 mV The BBIC detects this level and starts flashing Power Down Battery voltage V Batt 2 0 V 50 mV The BBIC detects this level and power down 4 7 5 Speakerphone The hands free loudspeaker at SP and SP is used to generate the ring alarm 4 8 Circuit Operation Charger Unit Charge control is ...

Page 22: ...n ANT2 ANT1 SW1 RF_PART IC501 BBIC VBAT_APU VBAT VCC_FE VCC_IF VCC_VCO SCL SDA WP STATUS RED STATUS GREEN ANT ID RED ANT ID GREEN IC611 EEPROM MEMORY VBAT SW STM CKM VCCA VCC ANT2 ANT1 RXp RXn RXON TXp TXn TXON RESET RSTN IC302 3 0 V REGULATOR DCP DCM DC JACK KX TGA405 BLOCK DIAGRAM Range Extender_RF Part DA801 ANT2 ANT1 TXON RXON RXp RXn ANT2 ANT1 TXp TXn ...

Page 23: ...a host processor The host processor provides activation and control of all that functions as follows 4 11 1 BBIC Base Band IC IC501 Block Interface Circuit RF part LED Key scan 4 11 2 EEPROM IC611 Following information data is stored Settings ex ID codes parameters for adequate performance RF part Host CPU BBIC IC501 TDD TDMA with FHSS Processor Keys LEDs EEPROM IC611 ...

Page 24: ... 3 0 V in IC302 VBAT is used for BBIC and all peripherals Circuit Operation 6 5V VBAT RSTN Reset pin 54 VBAT pin 10 pin 57 pin 9 IC501 IC302 IC611 BBIC VDDC 1 2V AC Adaptor 3 0V REGULATOR STM CKM RF Part EEPROM ANT ID LED STATUS LED Startmonitor IC501 57pin VDDC 1 2 V VBAT Reset RSTN IC501_54 pin BBIC chip initialize CKM STM ...

Page 25: ...SET TX HEADSET RX HANDSET SP Phone TX HANDSET SP Phone RX SIGNAL ROUTE IN 㸢㩷 ROUTE 㸢㩷 OUT GREETING RECORDING GREETING PLAY TO TEL LINE ICM RECORDING ICM PLAY TO SPEAKER DTMF SIGNAL TO TEL LINE CALLER ID BELL DETECTION HANDSET MIC R73 74 C11 13 RA4 IC1 22 23 HANDSET_RF_TX_ROUTE ANT IC601 IC501 73 74 28 C184 Q161 Q141 D101 L101 L102 P101 T R TEL LINE T R TEL LINE L101 P101 L102 D101 Q141 R165 R177 C...

Page 26: ...RF RX_ROUTE IC1 44 45 L809 C812 DA801 C803 C801 ANT ANT C801 C803 DA801 C826 IC1 46 47 IC501 44 45 C812 L809 DA801 C895 DA802 C894 C893 ANT1 ANT2 ANT1 ANT2 C894 C893 DA802 C895 DA801 C826 IC501 46 47 Note inside of Handset SIGNAL ROUTE IN 㸢㩷 ROUTE 㸢㩷 OUT RANGEEXTENDERRF RX_TX_ROUTE ANT1 ANT2 C893 C894 DA802 C895 DA801 C826 IC501 46 47 44 45 C812 L809 DA801 C895 DA802 C893 C894 ANT1 ANT2 ...

Page 27: ...ng 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 Note You can download and refer to the Operating Instructions Instruction book on TSN Server ...

Page 28: ... mode After that turn the base unit power off and then power on Note To enter Set dial mode press or at Set tel line It is necessary to turn on the power of base unit 6 Enter 㧖 㧖 New Data 1 4 Select Write EEP using or then press or V Default Data New Data INT Caller List V V Initial setting BACK V Set tel line BACK BACK BACK CLEAR V Set dial mode Select Set tel line using or then press or V Servic...

Page 29: ...s 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 cause serious damage to the computer system ID 00 02 00 06 Given value Desired Number hex Input Keys Desired Number hex Input Keys 0 0 A Flash 0 1 1 B Flash 1 C Flash 2 D Flash 3 E Flash 4 9 9 F Flash 5 ...

Page 30: ...beep will be heard 8 Press to return to standby mode After that remove and reinsert the batteries Press the Power button for about 1 second if the power is not turned on 6 Enter 㧖 㧖 New Data 1 4 Select Write EEP using or then press or V OFF Default Data New Data M Caller List V V Initial setting V Service Mode Read EEP Write EEP Set Addr _ _ _ _ _ _ Set Addr Set Addr Ringer setting M INT INT BACK ...

Page 31: ...he contents Careless rewriting may cause serious damage to the handset Items Address Default Data New Data Possible Adjusted Value MAX hex Possible Adjusted Value MIN hex Remarks Battery Low 00 12 00 13 00 00 2 Frequency 00 07 00 08 00 01 ID 00 02 00 06 Given value Desired Number hex Input Keys Desired Number hex Input Keys 0 0 A Flash 0 1 1 B Flash 1 C Flash 2 D Flash 3 E Flash 4 9 9 F Flash 5 ...

Page 32: ...B 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 The contents of user setting are reset to factory default Usage time is not cleared ...

Page 33: ...e recorded this symptom can not be reappeared with TEL simulator in the service center In this case try to change the Auto disconnect activation time and Vox level How to change the Auto Disconnect activation time and VOX level P 36 item A and B Power ON Base Unit OK FLOW CHART Check Power OK Playback Pre Message Check Playback Record OK Check Record Range Check the RF part Handset Voice Transmiss...

Page 34: ...ender P 93 Note BBIC is IC501 1 Refer to Specifications P 6 for part number and supply voltage of AC adaptor 2 Refer to Circuit Board Base Unit_Main P 85 Power ON Range Extender OK Check Power OK Link Check Link Range Check the RF part Not Link Power ON with pressing 1 6 and of Handset NG Not working Is the AC Adaptor inserted into AC outlet 1 Is output voltage of AC adaptor 5 5 V YES Check AC Ada...

Page 35: ...e voltage of TP 3 0 V about 3 0 V Is the voltage of TP VBAT 2 3 V more Check the battery and around BATT and BATT are not shorted Is the battery inserted to BATT and BATT Does BBIC IC1 86 oscillate at 13 824 MHz YES YES YES NO NO NO Is the voltage of TP VDDC about 1 2 V NO YES Check BBIC IC1 YES Check Bell signal OK Check Telephone Line Interface Bell Does the unit catch line YES Check Telephone L...

Page 36: ...ss MENU key at standby Mode and key Note The set must power on and be linked 2 Press 9 0 0 0 3 Press 7 3 1 4 Then enter the below last digit 5 Back to standby mode automatically after step 4 You can hear beep sound which is a confirmation tone Service ready 7 3 1 CLEAR Service ready BACK LCD H S last digit 0 Auto disconnect CPC enable 㨇default㨉 1 1 Auto disconnect CPC disable 2 1 2 Auto disconnect...

Page 37: ... 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 4 Then enter the below last digit 5 Back to standby mode automatically after step 4 You can hear beep sound which is a confirmation tone Service ready 5 1 1 CLEAR last digit 0 default setting normal 1 6dB up ...

Page 38: ... Check output of BBIC Pin 29 31 OK Check BBIC and Flash Memory Check Speaker and its surroundings NO NO Check Charge Circuit of Base Unit Check Handset Plug in the AC Power source Charge Handset on Base Unit Is the voltage of two charge contacts about 3 V or more OK NO Check Charge Contacts at Base Unit from mechanical point of view YES Is BBIC IC1 34 high at charge state Check Charge Circuit Chec...

Page 39: ...n check the TP_CKM IC501 57pin To adjust frequency send command SFR until the frequency counter becomes13 824 MHZ 55HZ Check around Power Supply Circuit Adjust 3 0V voltage to 3 0 V Does Base Unit make link with normal working Handset Check around X501 and RF module and adjust clock frequency NO NO NO NO YES YES Is the voltage of VBAT about 3 0 V Check the RF part Does the RF clock CLK oscillate a...

Page 40: ...adjust frequency send command SFR until the frequency counter becomes13 824 MHz 55HZ Check around Power Supply Circuit Reset Circuit Adjust 3 0V Vottage to 3 0V Does Handset make link with Base Unit Correct working unit Check around X1 and RF module and adjust clock frequency NO NO NO NO Is the voltage of TP VBAT about 2 2 2 8 V Is the voltage of TP VDDC about 1 2 V YES YES YES YES Is the voltage ...

Page 41: ... adjust frequency send command SFR until the frequency counter becomes13 824 MHZ 55HZ Check around Power Supply Circuit Adjust 3 0V voltage to 3 0 V Does Range Extender make link with normal working Base Unit and Handset Check around X501 and RF module and adjust clock frequency NO NO NO NO YES YES Is the voltage of VBAT about 3 0 V Check the RF part Does the RF clock CLK oscillate at 13 824 MHz i...

Page 42: ...ar RE 3 Handset is Power ON with 1 6 and Note 1 HS Handset 2 BU Base Unit 3 RE Range Extender START other checkings Registration of Handset and Range Extender to Base Unit checked ones Registration of Regular HS and Regular RE to Regular BU Use Regular HS HS is defective OK NG Use Regular BU BU is defective OK NG Use Regular RE RE is defective OK ...

Page 43: ...ease refer to the each item Note 1 Refer to Check Link P 39 Start Link confirmation Normal 1 Control signal confirmation X tal Frequency confirmation TX confirmation Range confirmation Normal TEST RANGE Check Check BBIC interface parts RF Block BBIC on BU HS P C B Adjust X tal Frequency 1 Check TX Block GOOD 5 2 3 4 OK OK OK NG NG NG NG NG OK OK ...

Page 44: ...ress Talk key of the Regular HS to establish link 3 Compare the range of the BU being checked with that of the Regular BU 1 Register HS to be checked to Regular BU 2 Press Talk key of the HS to establish link 3 Compare the range of the HS being checked with that of the Regular HS No Item RE Range Extender Check 1 Link Confirmation HS Mode Test Mode 1 Register Regular HS and RE to be checked to Reg...

Page 45: ...nsitivity of the BU is OK No Link RX Sensitivity of the BU is NG 1 Register HS to be checked to Regular BU 2 Set TX Power of the Checking HS and the Reg ular BU according to CHART1 3 At distance of about 20m between HS and BU Link OK RX Sensitivity of the HS is OK No Link RX Sensitivity of the HS is NG BU to be checked Regular_HS TX Power TX Power BU Base Unit TX Power Check Low High BU Base Unit ...

Page 46: ...within 90 seconds 3 Handset Press OK then wait until a long beep sounds Note While registering Base in registering is displayed on all registered handsets When you purchase an additional handset refer to the additional handset s installation manual for registration L OFF A handset can cancel its own registration to the base unit or other handsets registered to the same base unit This allows the ha...

Page 47: ...on Caller ID Call Waiting Caller ID P 16 Note Make sure the format of the Caller ID service of the Telephone company that the customer subscribes to It is also recommended to confirm that the customer is really a subscriber of the service Check MIC of handset Check handset Tx in Signal Route Check speaker of handset Check handset Rx in Signal Route YES Did bell ring Message indicator blinks Check ...

Page 48: ... Instructions 11 1 Disassembly Instructions 11 1 1 Base Unit Ԙ Remove the 4 screws to remove the cabinet cover ԙ Remove the solders Ԛ Remove the screw and pararell wire to remove the main P C board Solders ԙ Cabinet cover Ԙ 4 screws Main P C board Pararell wire Ԛ ...

Page 49: ...49 KX TG4753B KX TG470B KX TGA405B ԛ Remove the 2 screws to remove the Jack holder Ԝ Remove the 2 screws to remove the operational P C B board Jack holder Ԝ 2 screws Operational P C B board ԛ 2 screws ...

Page 50: ... solders and tape Remove the 2 screws to remove the 2 charge terminals ԝ Ԟ Remove the screw to remove the main P C board Main P C board Ԝ Ԝ Screw Ԟ 2 charge terminals ԝ ԝ 2 screws Cabinet cover Cabinet body Cabinet cover 2 screws Ԙ Solders Tape 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 ...

Page 51: ...KX TG4753B KX TG470B KX TGA405B 11 1 3 Charger Unit Ԙ Remove the screw to remove the cabinet cover ԙ Remove the solders to remove the 2 charge terminals Ԙ Screw ԙ Solders Main P C board 2 charge terminals ...

Page 52: ...52 KX TG4753B KX TG470B KX TGA405B 11 1 4 Range Extender 2 screws Solders Main P C board Cabinet cover Remove the 2 screws to remove the cabinet cover Remove the solders to remove the main P C board ...

Page 53: ... soldering iron Operational P C B 0 2mm 0 2mm If interval tolerance between center lines is less than 0 2 mm it is o k Horizontal Interval Tolerance Vertical Interval Tolerance OK NG NG NG Horizontal interval tolerance is more than 0 2 mm Vertical interval tolerance is more than 0 2 mm Inclined New LCD Rubber of Soldering Iron Part No PQZZ430PRB Tip of Soldering Iron Part No PQZZ430PIR ...

Page 54: ...54 KX TG4753B KX TG470B KX TGA405B Ԛ Attach the LCD and fix by hook A two points A ...

Page 55: ... damaged Fit the heatseal of a new LCD Rubber of Soldering Iron Part No PQZZ430PRB Tip of Soldering Iron Part No PQZZ430PIR Heatweld with the tip of the soldering iron about 5 to 8 seconds in case of 60W soldering iron New LCD 0 2 mm 0 2 mm P C board If interval tolerance between center lines is less than 0 2 mm it is o k Horizontal Interval Tolerance Vertical Interval Tolerance OK NG NG NG Horizo...

Page 56: ...ike a mass production 12 2 The Setting Method of JIG Preparation Serial JIG cable PQZZ1CD300E PC which runs in DOS mode Batch file CD ROM for setting PNZZTG4741M Note If you have the JIG Cable for TCD500 series PQZZ1CD505E change the following values of resistance Then you can use it as a JIG Cable for both TCD300 and TCD500 series It is an upper compatible JIG Cable 12 2 1 Connections Base Unit C...

Page 57: ...our PC calls it 12 2 3 Connections Range Extender Connect the AC adaptor Connect the JIG Cable GND black Connect the JIG Cable RX red and TX yellow Note COM port names may vary depending on what your PC calls it DC Power or Battery 2 GND black 3 To Serial Port com port 1 JIG Cable PC URX red 3 UTX yellow Handset P C board 1 BATT BATT GND UTX URX Range Extender P C board 2 GND black 3 To Serial Por...

Page 58: ...ges appear change the port number or 䇭check the cable connection 䊶If any value appear go to next step 7 Type DOSKEY then press the Enter key Example C Documents and Settings D D CD PNZZTG D PNZZTG SET_COM X D PNZZTG READID 00 52 4F A8 A8 D PNZZTG DOSKEY D PNZZTG Example error happens C Documents and Settings D D CD PNZZTG D PNZZTG SET_COM X D PNZZTG READID ޓ CreateFile error ERROR 10 Can t open se...

Page 59: ... wreeprom Write the data of EEPROM Type wreeprom 01 23 45 01 23 is address and 45 is data to be written bs_burst Base unit outputs RF power in burst test mode on antenna 2 Type bs_burst tx_high Keep TX power high Type tx_high tx_low Keep TX power low Type tx_low Command name Function Example rdeeprom Read the data of EEPROM Type rdeeprom 00 00 FF and the data from address 00 00 to FF is read out r...

Page 60: ...7 C458 R113 R121 R112 R152 R114 R166 R177 R178 R601 R612 R606 R605 R136 RA504 D113 D153 D133 R451 C451 RA451 C452 Q171 R171 C115 C121 C112 SPP SPN C122 C163 C176 C175 C173 C132 C351 C601 C456 C301 F301 C461 C120 C123 C124 C666 C455 C454 MIN MIP C472 C473 C475 C510 C530 C513 C512 C514 C331 R111 R115 R122 R176 R175 R172 R133 R131 L1T L1R ANT1 ANT2 R506 R653 TMS TCK TDI TDO RSTN STM CKM P15 R505 Q652...

Page 61: ...A405B 12 4 Adjustment Standard Charger Unit When connecting the simulator equipment for checking please refer to below 12 4 1 Bottom View D1 R1 F1 R2 A PNLB2081Z IG PbF Charge Charge 12 2 W Digital Volt Meter DC POWER DC 5 5 V GND ...

Page 62: ... C512 C301 ANT1 CL1 ANT2 CL2 RTCK R654 R653 R652 R651 RSTN R371 R304 JJ302 IC301 STM CKM P15 TCK TDO TDI TMS RA502 R612 GPIO26 RA504 DCDC_OUT DCP DCM DC D371 D372 Q652 Q651 GND 6 5V SCV URX C511 C611 R606 R505 R506 R605 R502 C513 C307 C309 C310 C303 3 0A F301 SW1 JJ371 R301 R302 R305 R307 IC611 RED BLK UTX VCCA VDDC 3 0V VBG VREF VBAT DC 6 5V Frequency Counter Oscilloscope 1 Send command SFR then ...

Page 63: ... 8 1 1 L 8 0 9 R806 C825 IC1 C826 D A 8 0 1 C863 C46 C803 ANT_TP ANT_Short GND ANT_Short C897 R69 R66 C69 E_SDA E_SCL E_WP R68 RTCK ATSTN TEST C44 C43 R1 C52 L9 R24 C1 C7 F1 L6 R8 R4 C35 Q9 CHG_CTRL R6 R9 D3 R73 D4 R74 C89 R34 C88 C96 C97 C39 RA4 C51 L3 C34 C17 C98 C68 C814 C24 C812 C810 C806 C822 C45 ATSTP CKM STM GND_J TMS TCK R67 TDI RSTN R807 C805 C802 C93 LED12 LED10 LED11 C91 C92 SID SCL CD ...

Page 64: ...nload the data 2 Default batch file Execute the command default bat 3 Country version batch file Execute the command TG4731US_US_RevXXX_YYY bat 1 4 Clock adjustment X tal X1 System clock Clock adjustment data is in EEPROM adjust the data again after replacing it 1 Apply 5 5V between DCP ad DCM with DC power 2 Input Command sendchar sfr then you can confirm the current value 3 Check X tal Frequency...

Page 65: ...file default batch file etc 1 Default batch file Execute the command default bat 2 Default batch file remaining Execute the command TGA470US_DEF_RevXXX_YYY bat 2 3 Country version batch file Execute the command TGA470US_US_RevXXX_YYY bat 2 4 Clock adjustment 5 2 35 V setting and battery low detection X tal X1 System clock 1 Apply 2 6V between BATT and BATT with DC power 2 Input Command sendchar sf...

Page 66: ...66 KX TG4753B KX TG470B KX TGA405B 12 8 Frequency Table Ch hex TX RX Frequency MHz Channel 0 00 1928 448 Channel 1 01 1926 720 Channel 2 02 1924 992 Channel 3 03 1923 264 Channel 4 04 1921 536 ...

Page 67: ...ciently choose the right sized nozzle of the hot air desoldering tool that matches the IC package Be careful about the temperature of the hot air desoldering tool not to damage the PCB and or IC 13 1 3 How to Remove the IC 1 Heat the IC with a hot air desoldering tool through the P C Board 2 Pick up the IC with tweezers etc when the solder is melted completely Note Be careful not to touch the peri...

Page 68: ... placing the IC the positioning should be done very carefully 3 Heat the IC with a hot air desoldering tool through the P C Board until the solder on IC bottom is melted Note Be sure to place it precisely controlling the air volume of the hot air desoldering tool 4 After soldering confirm there are no short and open circuits with visual inspection Solder Soldering Iron P C Board Land IC Solder Sol...

Page 69: ...ge the PCB foil Flux Recommended Flux Specific Gravity 0 82 Type RMA lower residue non cleaning type Note See About Lead Free Solder PbF Pb free P 4 13 2 2 How to Remove the IC 1 Put plenty of solder on the IC pins so that the pins can be completely covered Note If the IC pins are not soldered enough you may give pressure to the P C board when cutting the pins with a cutter 2 Make a few cuts into ...

Page 70: ... of the IC setting with the corresponding soldering foil 2 Apply flux to all pins of the FLAT PACKAGE IC 3 Solder the pins sliding the soldering iron in the direction of the arrow 13 2 4 How to Remove a Solder Bridge 1 Lightly resolder the bridged portion 2 Remove the remaining solder along the pins using a soldering iron as shown in the figure below ...

Page 71: ... Cathode Anode B0DDCD000001 3 2 1 4 C0DBEYY00102 PSVTUMG11NTR 1 3 2 5 4 1 88 67 23 44 22 66 45 Reverse View PQVDPTZT2530 B1ACGP000008 DA2J10100L Anode Cathode B3AAB0000347 LNJ237W82RA Cathode Anode 1 3 2 4 5 6 1 4 8 5 PNWITGA470BR Anode Cathode B0BC4R3A0006 C0DBZYY00357 C B E B1ADCF000040 DRC9113Z0L 2SC6054JSL C2HBCY000081 Anode Cathode B0DDCD000001 1 88 67 23 44 22 66 45 Reverse View B1ABGE000011...

Page 72: ...KX TGA405B 13 3 4 Range Extender 1 4 8 5 PNWITG405BR 1 3 5 4 B1GFCFEN0011 Cathode Anode B0DDCD000001 3 2 1 4 C0CBAYG00016 1 88 67 23 44 22 66 45 Reverse View C2HBCY000046 φ φ Cathode Anode LNJ308G8JRA LNJ237W82RA Cathode Anode ...

Page 73: ...ms may be modified at any time with the development of new technology 14 1 3 Charger Unit Schematic Diagram Charger Unit 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 Important Safety Notice Components identified by mark have special characteristics important for sa...

Page 74: ...667 NC SPP C863 1 5p GND C810 2 4p WBX01 AP1 10pin PARALLEL WIRE R502 33 URX ANT2 TMS C811 10p GND GND C516 0 1u LCD_CS LCD_RST LCD_CD LCD_SCL LCD_SID LCD_GND ANS_LED MSG_LED LCD_BLT LCD_VDD KEYIN6 KEYS_A KEYS_B MICN KEYIN3 KEYS_C MICP SP_LED NC KEYIN1 KEYIN5 KEYIN4 LED_VDD KEYS_E KEYIN2 KEYS_D C653 NC C654 NC C655 NC C656 NC C659 NC C657 NC C658 NC L661 NC L662 NC L663 NC L664 NC L665 NC 3 0V R51...

Page 75: ...12 0 047u C321 1u 5 5V C501 0 1u C510 K1u R178 1k C520 0 1u C164 NC C451 NC VDDC HAK_CL1 CHG R331 68k C322 NC VBG R136 100k GND R115 NC R322 100 R321 140 C306 NC R702 NC 3 IN 2 OUT1 1 ADJ 4 OUT2 D142 30V A K D361 NC A K C502 10u C503 10u C50510u C511 10u Q701 NC D362 A K C701 NC C178 0 022u C343 10p Q142 B C E 64K EEPROM 1 A0 2 A1 6 SCL 7 WP 3 A2 8 VCC 4 VSS 5 SDA R332 33k Q161 B C E RA651 100 1 2...

Page 76: ...1_LED R KEYS_E LCD_VDD KEYS_C MSG4 1 2 C901 1u 16V NC3 KEYS_D MSG2 1 2 GND MEG_LED LOCAT INT 1 2 GND LED908 GND LED912 NC A K LCD_CD LED916 NC A K DOWN 1 2 CN901 1 2 3 4 5 6 7 8 9 10 11 12 LCD_BLT LED906 LCD_CS C903 1u 6 3V C902 1u 25V LED901 RED A K LED902 RED A K LED911 NC A K LED915 NC A K LED913 NC A K R901 270 R902 270 R903 270 R904 270 FOR TG773x TG473x VDD2 V0 1 13 GND SDA 13 VSS XV0 1 VG S...

Page 77: ...77 KX TG4753B KX TG470B KX TGA405B Memo ...

Page 78: ... 5 GPIO 24 6 GPIO 25 7 GPIO 26 8 VDDC2 24 HSMIN 25 HSMIP 26 MPWR 27 HSSPOUTP 28 LOUT 29 SPOUTN 30 VCCPA 45 TXp 46 RXp 47 RXn 48 GND_RF 49 TRSW_p 50 ANT_n 51 ATST_n 52 ATST_p 81 GPIO 13 82 GPIO 14 83 GPIO 15 84 GPIO 16 85 GPIO 17 86 VDDIO2 87 GPIO 18 88 GPIO 19 89 GND 9 COREOUT 10 VBAT 11 DOUBCAPN1 12 DOUBCAPN 13 DOUBCAPP 14 DOUBCAPP1 15 DOUBOUT 16 DCIN0 LIN0 17 DCIN1 18 DCIN2 19 DCIN3 LIN1 20 VREF...

Page 79: ...C GND GND C804 1 8p C805 2 4p C806 2 4p C810 2 5p C813 1 6p C812 8 2n L809 1p C811 100p C822 10p C826 10p C825 10p C897 24p C37 10u 1608 X1 13 824M C73 10p C72 10p GND GND L4 180n L5 NC C16 22u L9 0 R28 2 2k GND ANT_TP MIC AP1 1 2 ANT Short GND ANT Short D21 4 3V D14 4 3V D13 4 3V D22 4 3V GNDA1 CN4 Headset Jack 1 4 2 3 5 R80 100 GNDA1 GNDA1 C83 D10p L75 L10 GNDA L1 GNDA1 C82 K470p GNDA C84 K1000p...

Page 80: ...80 KX TG4753B KX TG470B KX TGA405B 14 5 Schematic Diagram Handset_LED LED KX TGA470 SCHEMATIC DIAGRAM Handset_LED ...

Page 81: ...81 KX TG4753B KX TG470B KX TGA405B 14 6 Schematic Diagram Charger Unit J1 2 1 G A K TP1 TP2 F1 R1 1 0 5W R2 D1 1 0 5W SCHEMATIC DIAGRAM Charger Unit ...

Page 82: ...1 2 NC2 3 NC3 4 VSS 5 SDA 6 SCL 7 WC 8 VCC GND RTCK ZA1 NC 1 2 6 7 9 11 3 4 5 8 10 12 C863 1 5p ANT1 C813 2p C811 10p TXp GND ANT2 GND VBAT R892 470 GND GND R891 470 CL1 C810 2 4p TXON C825 10p C859 2 2p GND GND C891 5p RXp C822 10p DA801 1 2 3 C805 2 7p GND ANT2 R807 470 ANT1 C806 2 7p RXn C820 1 5p GND GND GND GND GND RXON C896 2 2p GND C826 10p CL2 GND C895 1 2p R806 470 GND GND GND DA802 1 2 3...

Page 83: ...53 680 C509 12p X501 13 824M R661 1k R662 0 C309 NC C310 NC R305 NC SCV L301 NC IC501 1 GPIO 20 2 GPIO 21 23 MIP 3 GPIO 22 4 GPIO 23 5 GPIO 24 6 GPIO 25 7 GPIO 26 8 VDDC2 24 HSMIN 25 HSMIP 26 MPWR 27 HSSPOUTP 28 LOUT 29 SPOUTN 30 VCCPA 45 TXp 46 RXp 47 RXn 48 GND_RF 49 TRSW_p 50 ANT_n 51 ATST_n 52 ATST_p 81 GPIO 13 82 GPIO 14 83 GPIO 15 84 GPIO 16 85 GPIO 17 86 VDDIO2 87 GPIO 18 88 GPIO 19 89 GND ...

Page 84: ...84 KX TG4753B KX TG470B KX TGA405B Memo ...

Page 85: ...2 R165 R502 R511 L101 L102 L501 IC302 IC501 D143 D142 DA801 RA652 RA651 Q141 C652 C659 C654 R668 C651 C658 C653 C655 C165 C164 SA101 SA103 SA102 C894 P101 C508 C509 C505 C506 C172 C503 C501 C810 C322 C321 C893 C805 C813 C812 C859 C896 C519 C518 C516 C515 C826 X501 R652 R651 R807 R161 R164 R145 R151 C701 R892 R510 R160 R703 R701 R373 Q701 Q702 R501 R509 R322 R321 C657 R657 R655 R654 Q653 Q651 C656 ...

Page 86: ...177 R178 R601 R612 R606 R605 R136 RA504 D113 D153 D133 R451 C451 RA451 C452 Q171 R171 C115 C121 C112 SPP SPN C122 C163 C176 C175 C173 C132 C351 C601 C456 C301 F301 C461 C120 C123 C124 C666 C455 C454 MIN MIP C472 C473 C475 C510 C530 C513 C512 C514 C331 R111 R115 R122 R176 R175 R172 R133 R131 L1T L1R ANT1 ANT2 R506 R653 TMS TCK TDI TDO RSTN STM CKM P15 R505 Q652 R503 VCCA VREF VBAT VBG 3 0V VDDC RTC...

Page 87: ...PT MSG1 MSG3 MSG2 MSG4 STOP ERASE ANS LOCAT INT DOWN SKIP UP LED915 KX TG4753 CIRCUIT BOARD Base Unit_Operation Component View TG773xH TG473xH A PNLB2049Z PbF IG LED916 LED911 LED912 LED913 LED914 LED908 LED906 LED905 R901 R903 R904 R902 C902 C903 LCD C901 LED901 LED902 LED907 ...

Page 88: ...88 KX TG4753B KX TG470B KX TGA405B Memo ...

Page 89: ... IC1 C826 D A 8 0 1 C863 C46 C803 ANT_TP ANT_Short GND ANT_Short C897 R69 R66 C69 E_SDA E_SCL E_WP R68 RTCK ATSTN TEST C44 C43 R1 C52 L9 R24 C1 C7 F1 L6 R8 R4 C35 Q9 CHG_CTRL R6 R9 D3 R73 D4 R74 C89 R34 C88 C96 C97 C39 RA4 C51 L3 C34 C17 C98 C68 C814 C24 C812 C810 C806 C822 C45 ATSTP CKM STM GND_J TMS TCK R67 TDI RSTN R807 C805 C802 C93 LED12 LED10 LED11 C91 C92 SID SCL CD CS RESET OTP C801 C804 C...

Page 90: ... 3 2 Bottom View VOL_UP CN3_C VOL_DW LED7 LED1 TALK 1 4 7 8 9 0 A 5 6 2 3 SP FLASH OFF LED3 LED5 LED6 MIC LED21 LED20 LED4 LED2 LED9 LED9 SOFT_A SOFT_B UP DOWN LEFT RIGHT SOFT_C PNLB2012Z PA KX TGA470 CIRCUIT BOARD Handset_Main Bottom View ...

Page 91: ...91 KX TG4753B KX TG470B KX TGA405B 15 4 Circuit Board Handset_LED A KX TGA470 CIRCUIT BOARD Handset_LED Component View PNLB1964Z PbF IG ...

Page 92: ...G470B KX TGA405B 15 5 Circuit Board Charger Unit 15 5 1 Component View 15 5 2 Bottom View J1 CIRCUIT BOARD Charger Unit Component View PNLB2081Z IG A CIRCUIT BOARD Charger Unit Bottom View PNLB2081Z IG D1 R1 F1 R2 A PbF ...

Page 93: ...822 C894 C895 C820 C813 C811 R322 R661 LED654 LED653 LED652 LED651 R321 L301 IC501 DA801 DA802 Q301 C371 C321 C305 C304 C898 C341 C859 C896 C812 C509 C508 C805 C897 C515 C518 C519 C520 C516 C503 C506 C505 X501 JJ301 R662 R372 R806 R501 HAK_CL1 R503 R891 R892 R807 R509 L809 IC302 RA501 PWM0 DCINS PWM1 KX A405 22 1 1 1 KX TGA405 A PNLB1754Z PbF ANT1 ANT2 KX TGA405 CIRCUIT BOARD Range Extender Compon...

Page 94: ...510 C514 C512 C301 ANT1 CL1 ANT2 CL2 RTCK R654 R653 R652 R651 RSTN R371 R304 JJ302 IC301 STM CKM P15 TCK TDO TDI TMS RA502 R612 GPIO26 RA504 DCDC_OUT DCP DCM DC D371 D372 Q652 Q651 GND 6 5V SCV URX C511 C611 R606 R505 R506 R605 R502 C513 C307 C309 C310 C303 3 0A F301 SW1 JJ371 R301 R302 R305 R307 IC611 RED BLK UTX VCCA VDDC 3 0V VBG VREF VBAT ...

Page 95: ...Replacement Parts List 16 1 Cabinet and Electrical Parts Base Unit Note 1 This cable is fixed by welding Refer to How to Replace the Base Unit LCD P 53 E2 17 18 15 14 PCB1 PCB2 9 12 E1 1 E3 8 10 11 4 5 2 3 6 A 13 A A A 16 1 7 12 Ref No Figure A 2 6 x 8mm 22 ...

Page 96: ...vailable through sales route of Panasonic 3 Attach the SPACER No 121 to the exact location described above 110 B 109 102 103 105 E105 E106 E104 E101 1 113 114 108 122 123 121 3 101 107 E103 E102 B E107 MIC100 PCB100 106 116 115 112 Ref No Ǿ2 8 mm B Figure 117 118 119 111 B 120 2 Spacer No 121 Battery cover Put it in the center Stick it between ribs CUSHION RUBBER STICK IT WITHIN THE FRAMEWORK ON P...

Page 97: ...97 KX TG4753B KX TG470B KX TGA405B 16 3 Cabinet and Electrical Parts Charger Unit B 200 200 1 200 3 201 200 4 200 2 PCB200 Ref No φ2 8 mm B Figure ...

Page 98: ...98 KX TG4753B KX TG470B KX TGA405B 16 4 Cabinet and Electrical Parts Range Extender Ref No Figure A 2 6 x 8mm 300 1 300 4 300 3 300 5 300 2 PCB1 A 301 300 ...

Page 99: ...99 KX TG4753B KX TG470B KX TGA405B 16 5 Accessories and Packing Materials 16 5 1 KX TG4753B A4 A5 A6 A8 P1 A3 P2 P2 P3 1 P2 P3 1 A2 Note 1 These pads are pieces of Ref No P1 GIFT BOX A1 A7 ...

Page 100: ...100 KX TG4753B KX TG470B KX TGA405B 16 5 2 KX TGA470B Note 1 This pad is a piece of Ref No P101 GIFT BOX A102 P101 A103 P102 1 A101 ...

Page 101: ...Oxide ER0 Metal Film PQ4R Chip ERS Fusible Resistor ERF Cement Resistor Type ECFD Semi Conductor ECQS Styrol ECUV PQCUV ECUE Chip ECQMS Mica ECCD ECKD ECBT F1K ECUV Ceramic ECQE ECQV ECQG Polyester ECEA ECST EEE Electlytic ECQP Polypropylene Wattage Type Voltage Of Capacitor 10 16 1 8W 14 25 1 4W 12 1 2W 1 1W 2 2W 3 3W Voltage ECQ Type ECQG ECQV Type 05 50V 1 100V 2 200V ECSZ Type 0J 6 3V 1A 10V 1...

Page 102: ...0 S C503 ECJ1VB0G106M 10 S C504 ECUE0J105KBQ 1 C505 ECJ1VB0G106M 10 S C506 ECUV1A105KBV 1 C507 ECUV1A225KBV 2 2 S C508 ECUE1H100DCQ 10p S C509 ECUE1H120JCQ 12p S C510 ECUV1A105KBV 1 C511 ECJ1VB0G106M 10 S Safety Ref No Part No Part Name Description Remarks C512 ECUE1A104KBQ 0 1 C513 ECUV1A225KBV 2 2 S C514 ECUE1A104KBQ 0 1 C515 ECUV1A105KBV 1 C516 ECUE1A104KBQ 0 1 C517 ECUE1A104KBQ 0 1 C518 ECUE1A...

Page 103: ...6 DIODE SI D14 B0BC4R3A0006 DIODE SI D21 B0BC4R3A0006 DIODE SI D22 B0BC4R3A0006 DIODE SI DA801 B0DDCD000001 DIODE SI LEDS LED1 B3ACB0000190 LED LED2 B3ACB0000190 LED LED3 B3ACB0000190 LED LED4 B3ACB0000190 LED LED5 B3ACB0000190 LED LED6 B3ACB0000190 LED LED11 B3ACB0000190 LED LED12 B3ACB0000190 LED COILS C812 PQLQR4C8N2J COIL S L4 G1CR18J00004 COIL RESISTOR ARRAYS RA2 D1H83314A013 RESISTOR ARRAY S...

Page 104: ...5 F1G1H2R4A480 2 4p C806 F1G1H2R4A480 2 4p C810 F1G1H2R5A480 2 5p C811 ECUE1H101JCQ 100p S C813 F1G1H1R6A480 1 6p C820 F1G1H1R8A480 1 8p C822 ECUE1H100DCQ 10p S C825 ECUE1H100DCQ 10p S C826 ECUE1H100DCQ 10p S C863 F1G1H1R8A480 1 8p C897 F1G1H240A557 24p L809 F1G1H1R0A480 1p OTHERS MIC100 L0CBAY000053 MICROPHONE E101 L5DYBYY00043 LIQUID CRYSTAL DISPLAY 3 E102 PNHX1569Z COVER DIFFUSION SHEET E103 PN...

Page 105: ...J1VB0G106M 10 C503 ECUV1C104KBV 0 1 C504 ECUE1C103KBQ 0 01 S C508 ECUE1H100DCQ 10p S C509 ECUE1H120JCQ 12p S C510 ECUV1A105KBV 1 C511 ECJ1VB0G106M 10 C512 ECUE1A104KBQ 0 1 C513 ECUV1A225KBV 2 2 S C514 ECUE1A104KBQ 0 1 C515 ECUV1A105KBV 1 C516 ECUE1A104KBQ 0 1 C517 ECUE1A104KBQ 0 1 C518 ECUE1A104KBQ 0 1 C519 ECUE1A104KBQ 0 1 C520 ECUE1A104KBQ 0 1 C530 ECUE1H100DCQ 10p S C611 ECUE1A104KBQ 0 1 C805 F...

Page 106: ...KX TGA405B T I N KXTG4753B KXTGA470B KXTGA405B Safety Ref No Part No Part Name Description Remarks PQZZ1CD300E JIG CABLE 1 PNZZTG4741M BATCH FILE CD ROM 1 PQZZ430PIR TIP OF SOLDERING IRON 2 PQZZ430PRB RUBBER OF SOLDERING IRON 2 ...

Page 107: ...753B KX TGA470B KX TGA405B Digital Cordless Answering System B Black Version for U S A TABLE OF CONTENTS PAGE 1 REPLACEMENT PARTS LIST 2 1 1 REFERENCE CHART 2 1 2 ORIGINAL AND NEW PARTS COMPARISON LISTS 2 Supplement 1 Please file and use this supplement manual together with the service manual for Model No KX TG4753B KX TGA470B KX TGA405B Order No KM41201527CE ...

Page 108: ... each part in ORIGINAL AND NEW PARTS COMPARISON LISTS 1 Improve performance Remarks c To share the parts with other models 2 Change of material or dimension 3 To meet approved specification 4 Standardization 5 Addition 6 Deletion 7 Correction 8 Other Ref No Part No Part Name Description Pcs Set Remarks Notes Time of Change Original Old New Suffix Main P C Board Parts Handset C1 EEE0JA221WP CAPACIT...

Page 109: ...753B KX TGA470B KX TGA405B Digital Cordless Answering System B Black Version for U S A TABLE OF CONTENTS PAGE 1 REPLACEMENT PARTS LIST 2 1 1 REFERENCE CHART 2 1 2 ORIGINAL AND NEW PARTS COMPARISON LISTS 2 Supplement 1 Please file and use this supplement manual together with the service manual for Model No KX TG4753B KX TGA470B KX TGA405B Order No KM41201527CE ...

Page 110: ... the Notes column for each part in ORIGINAL AND NEW PARTS COMPARISON LISTS 1 Improve performance Remarks j To meet the standards 2 Change of material or dimension 3 To meet approved specification 4 Standardization 5 Addition 6 Deletion 7 Correction 8 Other Ref No Part No Part Name Description Pcs Set Remarks Notes Time of Change Original Old New Suffix Cabinet and Electrical Parts Handset 104 PNGT...

Page 111: ...753B KX TGA470B KX TGA405B Digital Cordless Answering System B Black Version for U S A TABLE OF CONTENTS PAGE 1 REPLACEMENT PARTS LIST 2 1 1 REFERENCE CHART 2 1 2 ORIGINAL AND NEW PARTS COMPARISON LISTS 2 Supplement 3 Please file and use this supplement manual together with the service manual for Model No KX TG4753B KX TGA470B KX TGA405B Order No KM41201527CE ...

Page 112: ...column for each part in ORIGINAL AND NEW PARTS COMPARISON LISTS 1 Improve performance Remarks m Discontinued To be replaced with a new part 2 Change of material or dimension 3 To meet approved specification 4 Standardization 5 Addition 6 Deletion 7 Correction 8 Other Ref No Part No Part Name Description Pcs Set Remarks Notes Time of Change Original Old New Suffix Cabinet and Electrical Parts Base ...