Panasonic KX-TGA20B Service Manual Download Page 108

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108

KX-TG7841/KX-TG7842/KX-TG7843/KX-TG7844/KX-TG7845/KX-TG365SK/KX-TG7871/KX-TG7872/KX-TG7873/KX-TG7874/KX-TG7875/KX-TG385SK/KX-TGA680

16.5.2.2. Main P.C. Board Parts

Note:

(*1) Reconfirm the model No. written on the handset's name
plate when replacing PCB100. Because the model No. of
the optional handset may differ from the included handset.
(*2) When replacing IC3 or X1, make the adjustment
using PNZZTG7871M. Refer to

Handset

(P.65) of Things

to Do after Replacing IC or X'tal.
(*3) When replacing the handset LCD, See

How to

Replace the Handset LCD

(P.56).

116

PNQT2006Z

LABEL, ATTENTION

117

PNQT2629Z LABEL, BATTERY

118

PNHS1466Z

SPACER, BATTERY

119

PNKK1076Z1

LID, BATTERY

ABS-HB

120

PNYNTGA680BR

LID, BATTERY ASS'Y

ABS-HB

121

PNHR1644Z

SPACER PS-HB

Safety

Ref.

No.

Part No.

Part Name & Description

Remarks

PCB100 PNWP1TGA680R

MAIN

P.C.BOARD

ASS'Y

(RTL) (*1)

(ICs)

IC1

C2HBCY000124

IC3

PNWITGA680R

IC(EEPROM)(*2)

IC4

C0DBZYY00357

(TRANSISTORS)

B1ADCF000040

TRANSISTOR(SI)

B1ABGE000011

TRANSISTOR(SI)

B1ADCF000040

TRANSISTOR(SI)

DRC9113Z0L

TRANSISTOR(SI)

2SC6054JSL

TRANSISTOR(SI) S

Q10

B1ADNB000003

TRANSISTOR(SI)

Q11

2SC6054JSL

TRANSISTOR(SI) S

Q12

B1ADCF000040

TRANSISTOR(SI)

(DIODES)

D13

B0BC4R3A0006

DIODE(SI)

D14

B0BC4R3A0006

DIODE(SI)

(LEDS)

LED1

B3ACB0000190

LED

LED2

B3ACB0000190

LED

LED3

B3ACB0000190

LED

LED4

B3ACB0000190

LED

LED5

B3ACB0000190

LED

LED6

B3ACB0000190

LED

LED20

B3AFB0000561

LED

(COIL)

L801

G1C2N7Z00009

COIL

(RESISTOR ARRAYS)

RA2

D1H83314A013

RESISTOR ARRAY

RA3

EXB24V331J

RESISTOR ARRAY

RA4

EXB24V332JX

RESISTOR ARRAY

RA5

EXB28V332JX

RESISTOR ARRAY

(IC FILTER)

J0JDC0000045

IC FILTER

(RESISTORS)

D0GA303JA021

30k

D0GA152JA021

1.5k

D0GA473JA021

47k

D0GA103JA021

10k

D0GA104JA021

100k

ERJ8GEYJ4R3V

4.3

D0GA303JA021

30k

R10

ERJ3GEYJ1R0

R11

D0GA681JA021

680

R12

D0GA183JA015

18k

R13

D0GA103JA021

10k

R19

ERJ2RKF2003X

200k S

R20

ERJ2RKF1003X

100k S

R21

D0GA104JA021

100k

R22

D0GA332JA015

3.3k

Safety

Ref.

No.

Part No.

Part Name & Description

Remarks

R23

ERJ2GEYJ391

390

R24

ERJ2GEJ100

R25

D0GA222JA021

2.2k

R26

D0GA332JA015

3.3k

R27

D0GA222JA021

2.2k

R28

D0GA222JA021

2.2k

R31

ERJ2RKF1003X

100k S

R32

D0GA104JA021

100k

R33

ERJ2RKF1003X

100k S

R34

ERJ2GEYJ391

390

R45

D0GBR10JA113

0.1

R66

D0GA103JA021

10k

R67

D0GA103JA021

10k

R68

D0GA103JA021

10k

R69

D0GA103JA021

10k

R70

D0GA101JA021

100

R72

ERJ2GE0R00

ERJ2GEJ100

(CAPACITORS)

F1J0J2260002

ECUE1A104KBQ

0.1

ECUE1A104KBQ

0.1

C11

ECUE1A104KBQ

0.1

C12

ECJ1VB0G106M

C13

ECUE1A104KBQ

0.1

C14

ECUV1C393KBV

0.039

C15

ECUE1H390JCQ

39p

C16

F1J0J2260002

C17

ECUE1H100DCQ

10p

C18

ECUE1H100DCQ

10p

C20

ECJ1VB0G106M

C21

ECUE0J105KBQ

C22

ECUE1A104KBQ

0.1

C23

ECUE1A104KBQ

0.1

C24

ECUE0J105KBQ

C25

ECUV1A225KBV

2.2

C26

ECJ1VB0G106M

C27

ECUE1H102KBQ

0.001

C29

ECUE0J105KBQ

C30

ECUE0J105KBQ

C31

ECJ1VB0G106M

C32

ECUE0J105KBQ

C33

ECUE1A104KBQ

0.1

C34

ECUE1H390JCQ

39p

C36

ECUE1A104KBQ

0.1

C37

ECJ1VB0G106M

C40

ECUE1A104KBQ

0.1

C41

ECUE1A104KBQ

0.1

C43

ECUE1A104KBQ

0.1

C44

ECUE0J105KBQ

C45

ECUE1A104KBQ

0.1

C46

ECUE1H100DCQ

10p S

C51

ECJ1VB0G106M

C52

ECUE1H100DCQ

10p

C53

ECUE1H120JCQ

12p

C56

ECUE0J105KBQ

C57

ECUE0J105KBQ

C58

ECUE0J105KBQ

C68

ECUE0J105KBQ

C69

ECUE1A104KBQ

0.1

C70

ECUE1H680JCQ

68p

C71

ECUE1H680JCQ

68p

C79

ECUE1H101JCQ

100p

C80

ECUV1C393KBV

0.039

C90

ECUE1A104KBQ

0.1

C91

ECUV1C105KBV

C92

ECUE0J105KBQ

C96

ECUE1H100DCQ

10p

C97

ECUE1H100DCQ

10p

C801

F1G1H2R0A765

C802

ECUE1H100DCQ

10p

C807

F1G1H2R0A765

Safety

Ref.

No.

Part No.

Part Name & Description

Remarks

Summary of Contents for KX-TGA20B

Page 1: ...arger Unit Model No Base Unit Handset Charger Unit Expandable KX TG7841 1 TG7841 1 TGA680 Up to 6 KX TG7842 1 TG7841 2 TGA680 1 Up to 6 KX TG7843 1 TG7841 3 TGA680 2 Up to 6 KX TG7844 1 TG7841 4 TGA680 3 Up to 6 KX TG7845 1 TG7841 5 TGA680 4 Up to 6 KX TG365 1 TG7841 5 TGA680 4 Up to 6 KX TG7871 1 TG7871 1 TGA680 Up to 6 KX TG7872 1 TG7871 2 TGA680 1 Up to 6 KX TG7873 1 TG7871 3 TGA680 2 Up to 6 K...

Page 2: ...fety These parts are marked by in the Schematic Diagrams 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 w...

Page 3: ...ord 36 10 1 3 Check Playback 39 10 1 4 Check Battery Charge 39 10 1 5 Check Link 40 10 1 6 Check the RF part 42 10 1 7 Registering a Handset to the Base Unit 46 10 1 8 Deregistering a Handset 46 10 1 9 Check Handset Transmission 47 10 1 10 Check Handset Reception 47 10 1 11 Check Caller ID 47 10 1 12 Check BT Communication 48 11 Disassembly and Assembly Instructions 50 11 1 Disassembly Instruction...

Page 4: ...t and Electrical Parts Base Unit 89 16 2 Cabinet and Electrical Parts Handset 90 16 3 Cabinet and Electrical Parts Charger Unit 91 16 4 Accessories and Packing Materials 92 16 4 1 KX TG7841S 92 16 4 2 KX TG7842S 93 16 4 3 KX TG7843S 94 16 4 4 KX TG7844S 95 16 4 5 KX TG7845S 96 16 4 6 KX TG365SK 97 16 4 7 KX TG7871S 98 16 4 8 KX TG7872S 99 16 4 9 KX TG7873S 100 16 4 10 KX TG7874S 101 16 4 11 KX TG7...

Page 5: ...ide battery that is recyclable powers the product 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 sol...

Page 6: ...nd 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 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 in...

Page 7: ...imum Approx 4 5 W 1 Maximum Approx 8 5 W 2 0 C 40 C 32 F 104 F 20 80 relative air humidity dry Approx 178 mm 115 mm 101 mm Approx 350 g Rechargeable Ni MH battery AAA R03 size 1 2 V 400 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 24 digits Phonebook 8 days at Standby 10 hours at Talk 0 C 40 C 32 F...

Page 8: ...f transmission and reception are transferred by PCM BBIC on DECT side controls the cordless telephone system which makes control data communication with BT_IC on BT Module in serial data DECT6 0 Bluetooth Headset Bluetooth Devices Cellular Phone For Link to Cell communication TGA680 Handset PSTN DC 5 5V BBIC FLASH IC601 TAM EEPROM IC611 Data TEL I F POWER QSPI FLASH IC502 Program Main PCB Audio si...

Page 9: ...te where duplex communication is performed 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...

Page 10: ...IF signal from RX signal and demodulates it to digital data RXDATA BBIC IC1 converts RXDATA into a voice signal and outputs it to speaker Transmission Handset 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 Base unit As for a base unit RF RF signal is receive...

Page 11: ...7875 385 BLOCK DIAGRAM Base Unit_Main SIDE_TONE CIRCUIT Crystal 10 368MHz TR_RLY TIP RING TEL_JACK VRF VPA RF_Block IC501 BBIC DC5 5V GND DC_JACK CHARGE 3 4 2 1 D101 CHARGE DETECT Q701 Q141 Q161 REGULATOR IC302 Power Down DET Power supply at AC failure KEY PAD LED VBAT PDN_DET CHARGE_DET IC611 LCD IC502 IC751 IC601 IC721 BT Module Q301 1 8V 3 0V AVD VDD QSPI CIDINp CIDINn P3_6 MICh LSRp RF_VDD Q30...

Page 12: ...G7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 4 4 Tel Interface Circuit TX AMP SIDE TONE RX AMP CONTROL CIRCUIT CALLER ID DETECT BELL DETECT P101 R141 R142 3 4 2 1 C101 D101 Q141 C102 R101 C103 R102 SA101 TIP RING REGULATOR C104 C105 C106 R103 R105 C107 R104 C108 R106 ...

Page 13: ...KX TG385SK KX TGA680 4 5 Block Diagram Base Unit_RF Part KX TG7841 7842 7843 7844 7845 365 7871 7872 7873 7874 7875 385 BLOCK DIAGRAM Base Unit_RF Part 10 368 MHz IC501 RF block TXDATA ANT1 ANT1 RF_TXp RF_TXn RF_RXp RF_RXn ANT2 ANT2 Control Logic RXDATA Mixer Demodulator D802 PLL 3856 3843MHz 3859 3845MHz Modulator ...

Page 14: ...ed 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 transmitted to the Telephone line etc Th...

Page 15: ... IC302 And 3 0V for peripherals and analog part is insulated from VBAT by Doubler of BBIC Circuit Operation 5 5V 5 5V 3 0V 3 0V 1 8V 3 0V_CP IC501 IC302 IC502 BBIC AC Adaptor 3 0V REGULATOR QSPI FLASH VDD3 VDD1 VDD4 3 0V_CP2 IC601 TAM FLASH IC611 D610 VDD5 EEPROM LCD RF Part LEDs Q301 Bluetooth unit 2 4V VDD2 Q302 IC721 Q661 LCD BLT LCD_BLT pin59_IC501 Startmonitor IC501 57pin VDDC 1 2 V VBAT Rese...

Page 16: ...X TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 4 6 6 1 Charge Circuit The voltage from the AC adaptor is supplied to the charge circuits D361 R372 D362 R371 CHARGE R373 C351 F301 DCP CHARGE 5 5V DCM K A ...

Page 17: ...1 Q141 Q161 R163 D101 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 19 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 signal feed back from Q1...

Page 18: ...onnection detection when on hook When on hook the voltage is monitored at pin 32 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 17 of IC501 the presence absence of a parallel connection is determined by detecti...

Page 19: ...lephone exchange is a modem signal which is modulated 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 numb...

Page 20: ... data and MARK data pass the following route Telephone Line P101 C105 C106 R105 R106 RA101 IC501 23 21 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...

Page 21: ... HSMIP HEADSET_DET SPOUTP SPOUTN CKM STM CKM STM BBIC RESET CHG_CTL BATTERY_ON CHG_DET WP CLK DATA KEYSTOROBE_A E KEYIN_1 5 CHARGE MIC Receiver Headset Jack CN431 Monitor SP LCD CHARGE PUMP IC4 KEYS RF part ANT1 X1 13 824 MHz EEPROM 3V BATTERY LED LCD RSTN VBAT VBAT 3V 4 0V VBAT RXn RXp TXp TXn KX TGA680 BLOCK DIAGRAM Handset KEY_LED CP_OFF Q6 LED KEY 4V CHARGE CONTROL POWER SUPPLY CONTROL ...

Page 22: ...KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 4 8 Block Diagram Handset_RF Part KX TGA680 BLOCK DIAGRAM Handset_RF Part RXp RXn ANT TXp TXn ...

Page 23: ...arge EEPROM LCD EEPROM IC3 Setting data is stored e g ID user setting 4 9 2 Power Supply Circuit Reset Circuit Circuit Operation When powering 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 Start monitor 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 ...

Page 24: ...is controlled by switching Q9 of Handset Refer to Fig 101 in Power Supply Circuit Reset Circuit P 15 4 9 4 Battery Low Power Down Detector Circuit Operation Battery Low and Power Down are detected by BBIC which 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 ...

Page 25: ...ssible to use the units during the power failure supplying power to VBAT of base unit from battery of handset through Q10 CHG terminal and Q351 4 11 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 23 The route for this is as follows DC pin of J1 CHARGE pad Handset C...

Page 26: ...7 C184 Q161 Q141 D101 P101 T R TEL LINE T R TEL LINE P101 D101 Q141 R165 C173 R178 IC501 25 94 95 BASE_UNIT_RF_TX_ROUTE ANT ANT HANDSET_RF_RX_ROUTE IC1 28 27 C16 L8 HEADSET_JACK 5 4 HANDSET SPEAKER HEADSET_JACK 2 C14 R22 IC1 25 HANDSET_RF_TX_ROUTE ANT ANT BASE_UNIT_RF_RX_ROUTE IC501 2 3 27 C184 Q161 Q141 D101 P101 T R TEL LINE T R TEL LINE P101 D101 Q141 R165 C173 R178 IC501 25 94 95 BASE_UNIT_RF_...

Page 27: ...1 C105 C106 R105 R106 RA101 IC501 23 21 T R TEL LINE C105 R105 R110 R111 R112 IC501 18 ANT BASE_UNIT_RF_RX_ROUTE IC501 2 3 69 70 IC601 HANDSET MIC C11 13 RA4 IC1 22 23 HANDSET_RF_TX_ROUTE ANT ANT BASE_UNIT_RF_RX_ROUTE IC501 2 3 41 43 SPEAKER MIC C457 C458 RA452 IC501 37 38 94 95 BASE_UNIT_RF_TX_ROUTE ANT ANT HANDSET_RF_RX_ROUTE IC1 28 27 C16 L8 HEADSET_JACK 5 4 HANDSET SPEAKER INTERCOM HANDSET TO ...

Page 28: ...ons Note You can download and refer to the Operating Instructions Instruction book on TSN Server 6 Installation Instructions Refer to the Operating Instructions Note You can download and refer to the Operating Instructions Instruction book on TSN Server 7 Operating Instructions Refer to the Operating Instructions Note You can download and refer to the Operating Instructions Instruction book on TSN...

Page 29: ...ss SELECT or H S key operation H S LCD V 3 Enter 7 2 6 2 7 6 6 4 Note 7262 7664 PANA SONI see letters printed on dial keys See next page 5 Enter ٨ ٨ ٨ ٨ Address 1 6 Enter 㧖㧖 New Data 1 4 Select Write EEP using or then press SELECT or V Default Data Phonebook V V Initial setting V Set tel line V Set dial mode Select Set tel line using or then press SELECT or V Service Mode Read EEP Write EEP Set A...

Page 30: ...mputer 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 7 Press OK a long confirmation beep will be heard 8 Press to return to standby mode After that turn the base unit power off and then power on Note To enter Set dial mode press SELECT or at Set tel line It is necessary to turn o...

Page 31: ...rs printed on dial keys 5 Enter ٨ ٨ ٨ ٨ Address 1 7 Press OK a long confirmation 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 SELECT or V OFF Default Data New Data V Service Mode Read EEP Write EEP Set Addr _ _ _ ...

Page 32: ...2 Use these items in a READ ONLY mode to confirm the 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 Flas...

Page 33: ... KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 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 34: ...oming messages can be recorded this symptom can not reappear 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 37 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 ...

Page 35: ...cuit P 23 Is the AC Adaptor inserted into AC outlet 1 Is output voltage of AC adaptor 5 5 V YES Check AC Adaptor Check VDD1 1 8V Test point VDD1 OK Check Power Supply Circuit NO NO NO NO RSTN Reset High YES Check Reset Circuit Check Xtal CLK 10 368MHz YES Check X501 Check BBIC Check Power Supply Circuit Reset Circuit Check X1 C52 C53 Is the voltage of TP 3 0 V about 3 0 V Is the voltage of TP VBAT...

Page 36: ...phone Line Interface P 17 Parallel Connection Detect Circuit Auto Disconnect Circuit P 18 Note Flash Memory is IC601 BBIC is IC501 Check Bell signal OK Check Telephone Line Interface Bell Does the unit catch line YES Check Telephone Line Interface OFF HOOK Check Line In Pin 25 of BBIC Check ICM Recording in Signal Route NO OK Check Auto Disconnect Circuit OK Check Parallel Connection Detection Cir...

Page 37: ...nect activation through the procedures below 1 Press 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 Service ready LCD H S last digit 0 Auto disconnect CPC enable 㨇default㨉 1 1 Auto disco...

Page 38: ...ect a small voice caller by raising the sensitivity of VOX level Therefore the recording of TAM is not turned off during 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 last digit 0 default setting normal 1 6dB up CLEAR ...

Page 39: ... 8V Test point VDD1 OK Check Power Supply Circuit Check output of BBIC Pin 41 43 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 ...

Page 40: ...e frequency of X501 To see the frequency execute the command SFR then check the TP_CKM IC501 57pin To adjust frequency send command SFR until the frequency counter becomes10 368 MHZ 55HZ Check around Power Supply Circuit Does Base Unit connect to the properly working Handset Check around X501 and RF module and adjust clock frequency NO NO NO NO YES YES Is the voltage of VDD3 about 3 0V Check the R...

Page 41: ... command SFR then check the TP_CKM IC1 57pin To adjust frequency send command SFR until the frequency counter becomes13 824 MHz 55HZ Check around Power Supply Circuit Reset Circuit Does Handset link with Base Unit Properly 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...

Page 42: ...ase Unit 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 Re register handset to be checked to regular BU Normal mode If this operation fails in some ways the handset is defective Base unit is defective Handset is defective START Registration of Regular HS to base unit Registr...

Page 43: ...art corresponds to Check Table for RF part P 44 Please refer to the each item Note 1 Refer to Check Link P 40 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: ...nfirmation HS BU Mode Adjustment Check X tal Frequency 10 368 MHz 100Hz Check X tal Frequency 13 824 MHz 100 Hz 3 TX confirmation HS Mode HS_Burst Mode 1 BS Mode BS_Burst Mode 1 1 Remove wire antenna 2 and connect spectrum analyzer to TP 2 2 Confirm TX power whether spec is satisfied Power 13 5dBm 1 Connect spectrum analyzer to TP 3 2 Confirm TX power whether satisfied spec Power 16 0dBm 4 Range C...

Page 45: ...S and the Regular BU according to CHART1 3 At distance of about 20m between HS and BU Link OK TX Power of the HS is OK No Link TX Power of the HS is NG Range Confirmation RX TEST RX sensitivity check HS BU setting Checked unit High TX power 1 Regular unit Low TX power 1 1 Register Regular HS to BU to be checked 2 Set TX Power of the BU and the Regular HS according to CHART1 3 At distance of about ...

Page 46: ...d handsets start ringing press LOCATOR again to stop then repeat this step The next step must be completed 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 ...

Page 47: ...hone Line Interface P 17 Calling Line Identification Caller ID Call Waiting Caller ID P 19 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...

Page 48: ... BT_Headset Check Voice Transmission of the BT_Headset Check Voice Reception of the BT_Headset Check ph book transfer from cell Check the circuit of around PCM communication of main board and BT module Refer to Troubleshooting Guide in the Operationg Instructions Check the circuit of around RF parts of BT Module YES YES OK OK NO NG NG NG NO Unplug plug in the AC power source again Check the Check_...

Page 49: ... BT Module Check the circuit of around UART communication 1 of main board and BT module AC power on PIO01 㻍 1 5s 㻍 1 95s 㻍0 05s 㻍㪋㪅㪇s Case1 OK Case2 NG1 fail to reset BT_IC AC power on PIO01 㻍 1 5s If BT_IC does not work 1st and 2nd signals does not appear Case3 NG2 fail to receive of UART signals AC power on PIO01 㻍 1 5s If BT_IC fails to receive of UART 2nd signal does not turn to HIGH Case4 NG3...

Page 50: ...KX TG7875 KX TG385SK KX TGA680 11 Disassembly and Assembly Instructions 11 1 Disassembly Instructions 11 1 1 Base Unit Cabinet cover Solders 5 screws Main P C board Pararell wire Ԙ Remove the 5 screws to remove the cabinet cover ԙ Remove the solders Ԛ Remove the pararell wire to remove the main P C board ...

Page 51: ...G7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 2 screws Jack holder Operational P C B board 4 screws ԛ Remove the 2 screws to remove the Jack holder Ԝ Remove the 4 screws to remove the operational P C B board ...

Page 52: ...etween the cabinet body and the cabinet cover then pull it along the gap to open the cabinet Likewise open the other side of the cabinet Remove the cabinet cover by pushing it upward Remove the solders Remove the solders to remove the 2 charge terminals Remove the screw to remove the main P C board Cabinet cover Cabinet body Cabinet cover 2 screws Screw Solders Main P C board 2 charge terminals ...

Page 53: ... TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 11 1 3 Charger Unit 2 charge terminals Ԙ Unhook the click of one side ԙ Then unhook the other one ...

Page 54: ... 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 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 ...

Page 55: ...5 KX TG7841 KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 Ԛ ԛ Attach the LCD and fix by hook A two points Solder the wires A A ...

Page 56: ...re to ensure that the foil on the P C board is not damaged Fit the heatseal of a new LCD Heatweld with the tip of the soldering iron about 5 to 8 seconds in case of 60W soldering iron 0 2 mm 0 2 mm P C board New LCD Tip of Soldering Iron Part No PQZZ430PIR Rubber of Soldering Iron Part No PQZZ430PRB If interval tolerance between center lines is less than 0 2 mm it is o k Horizontal Interval Tolera...

Page 57: ...pment may be useful in order to precisely adjust like 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 PNZZTG7871M 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 c...

Page 58: ... 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 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 ...

Page 59: ...EADID then press the Enter key 䊶If any error messages 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 PNZZT...

Page 60: ...hook mode on Base Type hookoff hookon On hook mode on Base Type hookon getchk Base unit Read checksum Type getchk How to use of getchk in Handset 1 rdeeprom Read EEPROM Type RdEeprom 03 7D 04 and the data from address 03 7D to 03 80 is read out This command gets 4 byte WW XX YY ZZ Please NEVER forget these 4 byte data 2 sendchar epw Write EEPROM Type sendchar epw 03 7D 04 FF FF FF FF 3 sendchar RS...

Page 61: ... IC611 JTAG Q155 Q731 Q732 Q351 Q352 Q353 Q354 R101 R102 R103 R104 R105 R106 R111 R112 R502 R311 R312 R507 R701 D472 R702 D473 R511 A N T 2_ T P R321 R322 C103 C104 C105 R142 C106 C107 R144 C108 R145 VDD1 VDD2 VDD3 VDD4 C301 VDD5 C111 BT_SOT C113 R155 R731 C501 R732 R156 R157 ANT_TP BT BT_URX R735 C311 R736 L1R C312 L1T R738 R351 C509 R352 R354 R355 R356 RA601 C514 C321 C515 C322 C518 C519 5 5V RA...

Page 62: ... C96 C97 C98 C99 C1 C4 C5 C90 C9 TCK TDI F1 TDO SP PHONE_SPEAKER ANT Short D13 D14 L3 L4 L8 IC3 IC4 TMS R21 R22 R23 R24 R25 R26 Q2 R27 Q3 R28 Q4 Q6 Q9 R31 R32 R33 R1 R2 R3 R4 CKM STM R6 R7 R8 R9 R45 R66 R67 R68 R69 R70 CN4 X1 C10 C11 C13 C14 C15 C16 C17 C18 BAT BAT RESET RSTN ATSTN ATSTP CD OTP CS VDDC SCL VBAT_MON CHG_CUR SID CHG_DET CHG_CTRL SPM SPP URX UTX MIC MIC VBAT GND C803 C804 L802 Q10 Q1...

Page 63: ...mory vary depending on country version 1 Wait more than 15 seconds after connecting the JIG Cable 2 Execute the command VPDL2011 AA ZZZ bin 1 writing time approx 1 min 115200 bps FLASH2 IC502 Program D L 1 Make sure to connect the JIG cable and disconnect the DC Power in order to download the data 2 Execute the command flw441 hex 3 Connect the DC Power 4 Press the PC Enter key once 5 After a few m...

Page 64: ... 3 Connect the DC Power 4 Press the PC Enter key once 5 After a few minutes Successful upgrade is displayed on the PC indicating downloading has finished 6 Detach the JIG cable then disconnect the DC Power 7 Connect the DC Power 8 Connect the JIG cable again and execute the command getchk then confirm the checksum value is correct If the downloading fails start again from step 1 9 Default batch fi...

Page 65: ... data is stored in memory country version batch file default batch file etc 1 Default batch file Execute the command default bat 2 Default batch file remaining Execute the command TGA680US_DEF_RevXXX_YYY bat 2 3 Country version batch file Execute the command TGA680US_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 an...

Page 66: ... TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 12 6 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: ... 2439 70 2472 5 2407 38 2440 71 2473 6 2408 39 2441 72 2474 7 2409 40 2442 73 2475 8 2410 41 2443 74 2476 9 2411 42 2444 75 2477 10 2412 43 2445 76 2478 11 2413 44 2446 77 2479 12 2414 45 2447 78 2480 13 2415 46 2448 14 2416 47 2449 15 2417 48 2450 16 2418 49 2451 17 2419 50 2452 18 2420 51 2453 19 2421 52 2454 20 2422 53 2455 21 2423 54 2456 22 2424 55 2457 23 2425 56 2458 24 2426 57 2459 25 2427...

Page 68: ... 320 C 20 C 13 1 2 Caution To replace the IC efficiently 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...

Page 69: ...ins are to be attached then place the IC Note When 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 ...

Page 70: ...meone with less experience could overheat and damage 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 5 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 cutt...

Page 71: ...C soldering the two marked pins Check the accuracy of the IC setting with the corresponding soldering foil 2 Apply flux to all pins of the FLAT PACKAGE IC 3 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 bel...

Page 72: ...00003 2SC6054JSL B1ADCF000040 B1GBCFGA0021 2SA1576S B1GBCFYY0020 1 4 8 5 PNWI1TG7841H 1 PNWI1TG7871H 2 PNWI2TG7871H PNWI3TG7871H C1CB00003663 DSC7003S0L Cathode Anode B0ECKM000008 B0BC4R3A0006 B0EDER000009 Cathode Anode B0DDCD000001 3 2 1 4 C0DBEYY00102 ψ ψ B1ACGP000008 DA2J10100L DY2J25000L B0JCDD000001 Anode Cathode B3AAB0000347 Cathode Anode 49 25 48 73 96 72 24 1 1 Reverse View 1 3 2 4 5 6 1 4...

Page 73: ...age line 2 The schematic diagrams may be modified at any time with the development of new technology 14 1 2 Handset Schematic Diagram Handset_Main Notes 1 DC voltage measurements are taken with an oscilloscope or a tester with a ground 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 chara...

Page 74: ...RGE_CTRL 40 P1_7 CHARGE 41 DP1 PAOUTp P3_1 42 VDD_PA 43 DP0 PAOUTn P3_0 44 P4_5 45 P4_6 46 P4_7 47 CP_VBAT1 48 CP_C1x 49 CP_C2x 50 CP_C1y 51 CP_VBAT2 52 CP_C2y 53 CP_VOUT1 54 CP_VOUT2 55 PON P1_6 56 VDD2 57 P2_7 BXTAL 58 P1_5 INT5 RDI VDDE 59 P1_4 INT4 TDOD 60 P1_3 INT3 SIO 61 P1_2 INT2 SK 62 P1_1 INT1 LE 63 P2_6 WTF_IN 64 P5_0 65 P5_1 66 P5_2 67 P5_3 68 P5_4 69 P0_7 SPI_DI PWM1 70 P0_6 SPI_DO 71 ...

Page 75: ...UT RINGING P3_5 19 RINGn P3_6 20 RINGp P3_7 21 CIDINp P3_2 22 VREFp 23 CIDINn MICp 24 CIDOUT MICn 25 MICh 26 VREFm 27 LSRp 28 LSRn 29 ONE_CELL 30 AVD 31 LDO_CTRL 32 ADC0 P3_3 89 VDD3 90 LDORF_CTRL 91 RFP0n 92 RF_SUPPLY2 93 RF_SUPPLY_PA 94 RF_TXn 95 RF_TXp 96 RFP2 133 VSS GND IC501 109 DC_CTRL 108 DC_I 111 DC_CTRLN 107 DC_SENSE 100 P4_2 SPI2_DO 101 P4_3 SPI_DI 129 P5_6 130 P5_7 125 QSPI_CS 122 VDDI...

Page 76: ...62 2p C860 1 8p C861 1 8p open stub SL W 2 0mm L 10 8mm SL W 0 2mm L 20 0mm W 0 15mm L 22 4mm 1st or 4th layer TX balun SL W 0 3mm L 39 0mm RX balun SL W 0 175mm L 2 7mm S 0 125mm open stub SL W 2 2mm L 5 0mm open stub SL W 0 6mm L 20 0mm Pre matching 4layer GND MSL W 0 25mm L 2mm 50 ohm line total L 4mm 50 ohm line L 4mm SL W 0 3mm L 6 95mm open stub SL W 2 9mm L 2 8mm MSL W 0 25mm L 2mm LPF open...

Page 77: ... K LED904 RED A K C912 10p C902 1u 16V R906 33 CELL2 SOFT_C SOFT_R CELL1 SOFT_L 1 6 8 9 3 0 5 2 4 7 HOLD SP PHONE REDIAL LOCAT STOP FLASH S N A E S A R E LCD_SIO LCD_VDD LCD_GND LCD_BLT LCD_SCL LCD_CD LCD_RST LCD_CS ANS_LED MEG_LED SP_LED MICN MICP CELL1_LED G CELL2_LED G KEYS_F KEYIN2 KEYIN3 KEYS_B KEYS_A KEYS_C KEYIN4 KEYIN1 KEYIN5 KEYIN6 KEYS_D KEYS_E VLED MIC 1 2 1 1 15 13 13 13pin TG6841 TG78...

Page 78: ...SB Charge 14 6 Schematic Diagram Base Unit_LED NC No Components KX TG7841 7842 7843 7844 7845 365 7871 7872 7873 7874 7875 385 SCHEMATIC DIAGRAM Base Unit_USB Charge PCB R1002 22k R1004 22k R1001 33k R1003 33k USB_ 5V USB_GND GND F1001 3 0A CN1001 4 3 2 1 6 5 FOR TG7871H LED KX TG7841 7842 7843 7844 7845 365 7871 7872 7873 7874 7875 385 SCHEMATIC DIAGRAM Base Unit_LED ...

Page 79: ...79 KX TG7841 KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 Memo ...

Page 80: ... 10k Q12 GND GND Q11 Q10 Battery_ON R19 200k CHG R20 100k Battery_ON C30 1u C29 1u TALK OFF NR CN3_C 5 A0 CN3_C 3 CS1 CN3_C 9 VDDA CN3_C 1 GND CN3_C 10 VSS CP3V CN3_C 11 V0 CN3_C 4 RES CN3_C 7 SI GND C91 K1u 16V C92 K1u CN3_C 8 VDD CN3_C 2 OTP_PWR CN3_C 6 SCL CN3_C 12 GND TCK TDO TDI GND_J TMS GND UTX GND URX VBAT BAT BAT VBAT C10 NC RA3 330 CHG_CTRL SOFT_A SOFT_C RTCK ATSTN ATSTP CD CHG_CUR CHG_D...

Page 81: ...2 7n VBAT TXp ANT1 GND C802 10p GND RXp GND TXn RXn ANT Short STAR5 STAR7 STAR8 STAR9 GND L802 NC GND C803 NC C804 NC C806 NC C805 NC GND SHORT1 ANT Short GND R81 NC SHORT2 GND GND GND GND SHORT3 C807 2p C808 1 3p GND GND C72 NC C73 NC C71 68p C70 68p GND GND C809 1 5p C810 15p C801 2p R34 390 C12 10u 1608 MIC POWER RECEIVER RECEIVER Speakerphone_SP Speakerphone_SP MIC MIC RF BLOCK Headset_RECEIVE...

Page 82: ...82 KX TG7841 KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 Memo ...

Page 83: ...KEYS_B KEYS_C KEYS_D KEYS_E KEYS_F LED_VDD KEYIN1 KEYIN2 KEYIN3 KEYIN4 KEYIN5 KEYIN6 MICP MICP MICN MICN Q161 CELL2_LED G CELL2_LED G R109 R110 R115 R501 R505 R121 R123 R125 ANT_BT LCD_RST LCD_RST R131 R133 C101 C102 GAP R141 C109 C110 C112 R151 C115 R152 R153 C502 C503 C504 R159 C505 C506 C507 C508 C123 R160 C124 R161 C125 R162 R163 R164 C510 R165 X501 C511 R166 C512 C513 R168 C516 HAK_CL1 TP9 C1...

Page 84: ...01 Q142 IC611 JTAG Q155 Q731 Q732 Q351 Q352 Q353 Q354 R101 R102 R103 R104 R105 R106 R111 R112 R502 R311 R312 R507 R701 D472 R702 D473 R511 R321 R322 C103 C104 C105 R142 C106 C107 R144 C108 R145 VDD1 VDD2 VDD3 VDD4 C301 VDD5 KX TG7841 7842 7843 7844 7845 365 7871 7872 7873 7874 7875 385 CIRCUIT BOARD Base Unit_Main Bottom View C111 BT_SOT C113 R155 R731 C501 R732 R156 R157 ANT_TP BT BT_URX R735 C31...

Page 85: ...e Unit_Operation A LCD REDIAL 0 1 4 7 2 5 8 3 6 9 LOCAT MSG SP PHONE LED901 LED902 LED904 DOWN CELL1 CELL2 R906 STOP C901 C902 FLASH RPT ERASE SKIP HOLD UP MIC SOFT_C SOFT_L SOFT_R ANS LED911 LED912 C912 KX TG7841 7842 7843 7844 7845 365 7871 7872 7873 7874 7875 385 CIRCUIT BOARD Base Unit_Operation Component View PNLB2165Z ޓ IG TG787xH㧛TG784xH TG684xH PbF ...

Page 86: ...uit Board Base Unit_USB Charge 15 4 Circuit Board Base Unit_LED A PNLB2177Z ޓ IG R1002 R1001 F1001 R1004 R1003 PbF KX TG7841 7842 7843 7844 7845 365 7871 7872 7873 7874 7875 385 CIRCUIT BOARD Base Unit_USB Component View A KX TG7841 7842 7843 7844 7845 365 7871 7872 7873 7874 7875 385 CIRCUIT BOARD Base Unit_LED Component View PNLB1964Z PbF IG ...

Page 87: ...K TDI F1 TDO SP PHONE_SPEAKER ANT Short D13 D14 L3 L4 L8 IC3 IC4 TMS R21 R22 R23 R24 R25 R26 Q2 R27 Q3 R28 Q4 Q6 Q9 R31 R32 R33 R1 R2 R3 R4 CKM STM R6 R7 R8 R9 R45 R66 R67 R68 R69 R70 CN4 X1 C10 C11 C13 C14 C15 C16 C17 C18 BAT BAT RESET RSTN ATSTN ATSTP CD OTP CS VDDC SCL VBAT_MON CHG_CUR SID CHG_DET CHG_CTRL SPM SPP URX UTX MIC MIC VBAT GND C803 C804 L802 Q10 Q11 Q12 C 8 0 5 C 8 0 6 C2 C3 R10 R11...

Page 88: ...G7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 15 5 2 Bottom View CN3_C 0 1 3 2 4 AST 5 6 7 8 9 LED1 LED3 LED2 LED4 LED5 LED6 L E D 2 0 LEFT DOWN FLASH RIGHT NR SP OFF SHARP UP MIC SOFT_A SOFT_C TALK KX TGA680 CIRCUIT BOARD Handset_Main Bottom View A ...

Page 89: ...nd Electrical Parts Base Unit Note 1 This cable is fixed by heat sealing Refer to How to Replace the Base unit LCD P 54 2 KX TG7841 KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK 3 KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK Ref No Figure A 2 6 x 8mm 1 18 A 19 3 20 2 3 4 5 6 A A 11 7 13 15 12 8 9 10 16 PCB2 PCB3 3 PCB1 17 A 22 23 25 24 23 A E1 1 E2 E4 E3 A MIC1 21 26 2 14 ...

Page 90: ...D P 56 2 The rechargeable Ni MH battery HHR 4DPA is available through sales route of Panasonic 3 Attach the SPACER No 118 to the exact location described above Ref No 2 8 mm B Figure CUSHION RUBBER STICK IT WITHIN THE FRAMEWORK ON P C B 105 101 105 106 107 E101 1 E102 E104 E105 121 B E103 E106 E107 102 103 104 MIC100 E108 PCB100 108 112 113 109 110 111 116 114 115 118 3 117 2 119 120 B Spacer No 1...

Page 91: ... KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 3 Cabinet and Electrical Parts Charger Unit 200 200 1 200 2 200 3 200 4 200 2 200 5 201 ...

Page 92: ...KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 Accessories and Packing Materials 16 4 1 KX TG7841S A3 A4 P2 P2 P2 P2 P2 P2 A2 A1 A5 P1 ...

Page 93: ...X TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 2 KX TG7842S A103 A104 P102 P102 A101 1 A102 A105 P101 P102 Note 1 This pad is a piece of Ref No P101 GIFT BOX ...

Page 94: ...7841 KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 3 KX TG7843S A201 A202 P201 A205 A203 A204 P202 P202 P202 P202 P202 P202 P202 ...

Page 95: ...41 KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 4 KX TG7844S A303 A304 P302 P302 P302 A302 A301 A305 P301 P302 P302 P302 P302 P302 ...

Page 96: ... TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 5 KX TG7845S A401 P401 P402 P402 A402 A405 A403 A404 P402 P402 P402 P402 P402 P402 P402 P402 ...

Page 97: ...97 KX TG7841 KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 6 KX TG365SK A501 A502 A503 A504 A505 ...

Page 98: ... TG7841 KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 7 KX TG7871S A603 A604 P602 P602 P602 P602 P602 P602 A602 A601 A605 P601 ...

Page 99: ... TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 8 KX TG7872S A703 A704 1 P702 P702 A701 A702 A705 P701 1 P702 Note 1 This pad is a piece of Ref No P701 GIFT BOX ...

Page 100: ...X TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 9 KX TG7873S A801 A802 P801 A805 A803 A804 P802 P802 1 P802 P802 P802 P802 P802 Note 1 This pad is a piece of Ref No P801 GIFT BOX ...

Page 101: ...843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 10 KX TG7874S A903 A904 1 P902 A902 A901 A905 P901 P902 P902 P902 P902 Note 1 This pad is a piece of Ref No P901 GIFT BOX ...

Page 102: ...45 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 11 KX TG7875S P1001 P1002 P1002 A1002 P1002 A1005 A1003 A1004 P1002 P1002 P1002 P1002 P1002 P1002 1 P1002 A1001 Note 1 This pad is a piece of Ref No P1001 GIFT BOX ...

Page 103: ...103 KX TG7841 KX TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 12 KX TG385SK A1101 A1102 A1103 A1104 A1105 ...

Page 104: ...X TG7842 KX TG7843 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 16 4 13 KX TGA680S Note 1 This pad is a piece of Ref No P1201 GIFT BOX P1201 P1202 1 A1202 A1201 ...

Page 105: ... 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 1C 16V 1E 25 25V 1V 35V 50 1H 50V 1J 16V 2A 100V 0F 3 15V 1A 10V 1V 35V 0J 6 3V Others 1H 50V 2A 100V 2E 250V 2H 500V 4 PQHR11082Z GUIDE SPEAKER POM HB 5 PN...

Page 106: ...COIL C781 G1C4N7Z00006 COIL RESISTOR ARRAYS RA101 EXB24V102JX RESISTOR ARRAY RA451 EXB24V222J RESISTOR ARRAY RA452 EXB24V272J RESISTOR ARRAY RA601 EXB28V561JX RESISTOR ARRAY RA611 EXB28V332JX RESISTOR ARRAY RA651 D1H810240004 RESISTOR ARRAY S RA652 D1H810240004 RESISTOR ARRAY S RA653 D1H810240004 RESISTOR ARRAY S RA654 D1H810240004 RESISTOR ARRAY S RA655 EXB28V473JX RESISTOR ARRAY RA656 EXB28V473J...

Page 107: ...ECUE1A104KBQ 0 1 C731 ECUE1A104KBQ 0 1 C851 ECUE1H100DCQ 10p C853 ECUE1H100DCQ 10p C855 ECUE1H100DCQ 10p C857 ECUE1H100DCQ 10p C859 ECUE1H100DCQ 10p C860 F1G1H1R8A765 1 8p C861 F1G1H1R8A765 1 8p C862 F1G1H2R0A765 2p OTHERS E1 L5DYAYY00004 LIQUID CRYSTAL DISPLAY 2 E2 PNHR1762Z TRANSPARENT PLATE LCD PMMA HB Safety Ref No Part No Part Name Description Remarks E3 PNHX1617Z COVER REFLECTOR SHEET E4 PNH...

Page 108: ... 10k R7 D0GA104JA021 100k R8 ERJ8GEYJ4R3V 4 3 S R9 D0GA303JA021 30k R10 ERJ3GEYJ1R0 1 S R11 D0GA681JA021 680 R12 D0GA183JA015 18k R13 D0GA103JA021 10k R19 ERJ2RKF2003X 200k S R20 ERJ2RKF1003X 100k S R21 D0GA104JA021 100k R22 D0GA332JA015 3 3k Safety Ref No Part No Part Name Description Remarks R23 ERJ2GEYJ391 390 S R24 ERJ2GEJ100 10 S R25 D0GA222JA021 2 2k R26 D0GA332JA015 3 3k R27 D0GA222JA021 2 ...

Page 109: ...764Z INSTRUCTION BOOK 1 A104 PNQW3431Z LEAFLET QUICK GUIDE A105 PNKE1268Z1 HANGER BELT CLIP ABS HB P101 PNPK3634002Z GIFT BOX P102 PNPD1711Z CUSHION Safety Ref No Part No Part Name Description Remarks A201 PNLV226Z AC ADAPTOR A202 PQJA10075Z CORD TELEPHONE A203 PNQX5764Z INSTRUCTION BOOK 1 Safety Ref No Part No Part Name Description Remarks A204 PNQW3431Z LEAFLET QUICK GUIDE A205 PNKE1268Z1 HANGER...

Page 110: ...LIP ABS HB P901 PNPK3685001Z GIFT BOX P902 PNPD1739Z CUSHION Safety Ref No Part No Part Name Description Remarks A1001 PNLV234Z AC ADAPTOR A1002 PQJA10075Z CORD TELEPHONE A1003 PNQX5764Z INSTRUCTION BOOK 1 A1004 PNQW3431Z LEAFLET QUICK GUIDE A1005 PNKE1268Z1 HANGER BELT CLIP ABS HB P1001 PNPK3686001Z GIFT BOX P1002 PNPD1740Z CUSHION Safety Ref No Part No Part Name Description Remarks A1101 PNLV234...

Page 111: ...TG7872S KX TG7873S KX TG7874S KX TG7875S KX TG385SK KX TGA680S KX TGA20B Link to Cell Cellular Convergence Solution B Black Version S Silver Version for U S A Supplement 1 Please file and use this supplement manual together with the service manual for Model No KX TG7841S KX TG7842S KX TG7843S KX TG7844S KX TG7845S KX TG365SK KX TG7871S KX TG7872S KX TG7873S KX TG7874S KX TG7875S KX TG385SK KX TGA6...

Page 112: ...3 KX TG7844 KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 KX TGA20 TABLE OF CONTENTS PAGE 1 REPLACEMENT PARTS LIST 3 1 1 REFERENCE CHART 3 1 2 ORIGINAL AND NEW PARTS COMPARISON LISTS 3 ...

Page 113: ...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 Unit 25 PNGT7152Z PNGT7732Z NAME PLATE for KX TG7841S TG7842S TG7843S TG7844S TG7845S TG365SK 1 m 8 V 25 PNGT7261Z PNGT7677Z NAME PLATE for KX TG7871S TG7872S TG7873S TG7874S TG7875S TG385SK Made in China 1 m ...

Page 114: ...KX TG7845 KX TG365SK KX TG7871 KX TG7872 KX TG7873 KX TG7874 KX TG7875 KX TG385SK KX TGA680 KX TGA20 OY KXTG7841S KXTG7842S KXTG7843S KXTG7844S KXTG7845S KXTG365SK KXTG7871S KXTG7872S KXTG7873S KXTG7874S KXTG7875S KXTG385SK KXTGA680S KX TGA20B ...

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Summary of Contents for KX-TGA20B

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Panasonic KX-TGA20B, Service Manual

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Summary of Contents for KX-TGA20B

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