Panasonic KX-T7603X Service Manual Download

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D3V

4MHz

Z0.01

R10

100K

D3V

6.3V 100u

Z0.1

IC1

P12

P11

P10

P47

P46

P45

P44

P43

P42

P41

P40

P31

IC0

Vsso

Vddo

XT2

XT1

RESET

P30

P27

P26

P25

P24

BUSY

RXD

TXD

SCLK

P07

P06

P05

P04

P03

P02

P01

P00

Vdd1

Vss1

P17

P16

P15

P14

P13

R12

100

D3V

CN1

D3V

SCLK

RxD

TxD

BUSY

Rx_RDY

Tx_EN

OSX

OSR

OSYNC

OCK2M

RESET

SIDE_CONNECT

GND

D3V

R15

10k

R16

56k

R17

R14

100

R11

100

R13

100

TP12

TP2

TP13

TP14

TP15

TP11

TP31

TP27

TP26

TP25

TP24

TP23

TP22

TP34

TP33

TP32

TP28

TP35

TP5

TP29

TP4

TP30

TP1

TP21

(3.3V)

(1)

(2)

(3)

(4)

(5)

(6)
(7)
(8)
(9)

(10)
(11)
(12)
(13)
(14)
(15)
(16)

KX-T7603X : MAIN BOARD (2/2)

(1)

(2)

Summary of Contents for KX-T7603X

Page 1: ...669C8 Add on Key Module KX T7603X for Asia MiddleNear East Africa Oceania Latin America Russia Europe 2003 Panasonic Communications Co Ltd All rights reserved Unauthorized copying and distribution is a violation of law ...

Page 2: ...pper Cu This model and others like it manufactured using lead free solder will have PbF stamped on the PCB For service and repair work we suggest using the same type of solder although with some precautions standard Pb solder can also be used Caution PbF solder has a melting point that is 50 70 F 30 40 C higher than Pb solder Please use a soldering iron with temperature control and adjust it to 70...

Page 3: ...terials The following lead free PbF solder wire sizes are recommended for service of this product 0 3mm 0 6mm and 1 0mm 1 2 HOW TO RECOGNIZE THAT Pb FREE SOLDER IS USED PbF is stamped to show that Pb free solder is used See the figure below 2 FOR SERVICE TECHNICIANS ICs and LSIs are vulnerable to static electricity When repairing the following precautions will help prevent recurring malfunctions 1...

Page 4: ...ate 47 W mm 178 H mm 213 D mm Base Weight 210g Design and specifications are subject to change without notice 4 INSTALLING For KX T7633 KX T7636 The Add on Key Module has 12 CO buttons These buttons are used to seize an outside line make a call using One touch Dialing or access certain features ...

Page 5: ...1 Open the cover 2 Attach the KX T7603 to your telephone with screws 3 Insert the flat cable into the connector ...

Page 6: ...4 Close the cover 5 DISASSEMBLY INSTRUCTIONS 1 Remove Two Screws A 2 Remove the Connect Plate 3 Remove Screw A 4 Remove the Bottom Cabinet and Top Cabinet Base ...

Page 7: ...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 Flux Recommended Flux Specific Gravity 0 82 Type RMA lower residue non cleaning type Note See ABOUT LEAD FREE SOLDER PbF Pb free ...

Page 8: ... of the pins on the IC 3 Being careful to not unsolder the tack points slide the soldering iron along the tips of the pins while feeding enough solder to the tip so that it flows under the pins as they are heated 6 3 REMOVING SOLDER FROM BETWEEN PINS 1 Add a small amount of solder to the bridged pins 2 With a hot iron use a sweeping motion along the flat part of the pin to draw the solder from bet...

Page 9: ...7 TROUBLESHOOTING GUIDE CROSS REFERENCE WAVEFORM 8 BLOCK DIAGRAM 9 CIRCUIT OPERATIONS ...

Page 10: ...t by IC1 That signal goes through the drive digital transistor and connects the key button and LED cathode By pressing the key the drive pulse wave is input to Pin9 Pin11 In order to light the appropriate LED the LED control port is turned ON That result LED is lit by the pulse Driver 10 IC DATA ...

Page 11: ...n 13 IC0 I Vpp 14 X2 O OSC 4MHz 15 X1 I OSC 4MHz 16 Vss0 Vss 17 Vdd0 Vdd 18 XT2 Not used Open 19 XT1 I Not used Vss Connection 20 RESET I Reset 21 P30 TO90 I Not used Vss Connection 22 P27 TI80 TO80 I Not used Vss Connection 23 P26 INTP2 CPT90 I Not used Vss Connection 24 P25 INTP1 I Not used Vss Connection 25 P24 INTP0 I Not used Vss Connection 26 P23 SS20 I Rx RDY 27 P22 SI20 RxD20 I RxD 28 P21 ...

Page 12: ... I Not used Vss Connection 36 P01 I Not used Vdd Connection 37 P00 I Not used Vdd Connection 38 Vdd1 Vdd 39 Vss1 Vss 40 P17 O LED K1 41 P16 O LED K2 42 P15 O LED K3 43 P14 O LED K4 44 P13 O LED K5 11 TERMINAL GUIDE OF ICs TRANSISTORS AND DIODES 12 CABINET AND ELECTRICAL PARTS LOCATION ...

Page 13: ...13 ACCESSORIES AND PACKING MATERIALS ...

Page 14: ...le for a specific period of time The retention period of availability is dependent on the type of assembly and in accordance with the laws governing parts and product retention After the end of this period the assembly will no longer be available 2 Important safety notice Components identified by mark have special characteristics important for safety When replacing any of these components use only...

Page 15: ...Resistor 14 1 CABINET AND ELECTRICAL PARTS Ref No Part No Part Name Description Remarks 1 PSHR1253Z TRANSPARENT PLATE 2 PSGD1064Z TEL CARD 3 PSKM1087Z1 CABINET BODY APRON ABS HB 4 PSKK1041Z2 DOOR LID SHAFT COVER ABS HB 5 PSKM1086Z1 CABINET BODY UPPER ABS HB 6 PSBX1090Z1 PUSH BUTTON CO KEY ABS HB 7 PSSX1020Z KEYBOARD SWITCH 8 PSKF1056Z1 CABINET COVER LOWER ABS HB 9 PSJE1033Z LEAD WIRE 10 PSKM1088Z1...

Page 16: ...NSISTOR SI Q4 B1HBGBA00001 TRANSISTOR SI Q5 B1HBGBA00001 TRANSISTOR SI DIODES D1 D12 PQVDBRPY1204 LED S CONNECTOR CN1 PSJS18A74Z CONNECTOR 18 PIN COMPONENT PARTS RA1 D1H81224A010 RESISTOR ARRAY 1 2k CRYSTAL OSCILLATOR X1 PQVBCST400MG CRYSTAL OSCILLATOR S RESISTORS R1 ERJ3GEYJ220 22 R2 ERJ3GEYJ151 150 R3 ERJ3GEYJ220 22 R4 ERJ3GEYJ151 150 R5 ERJ3GEYJ220 22 R6 ERJ3GEYJ151 150 R10 ERJ3GEYJ104 100k R11...

Page 17: ...age measurements are taken with an oscilloscope or a tester with a ground 2 The schematic diagrams and circuit board may be modified at any time with the development of new technology 16 SCHEMATIC DIAGRAM 17 WAVEFORM 18 PRINTED CIRCUIT BOARD 18 1 COMPONENT VIEW 18 2 BOTTOM VIEW Y KXT7603X ...

Page 18: ...B5 A3 A4 A1 A2 B4 B3 Q4 Q3 Q2 Q5 E2 E1 R15 E3 11 1 44 IC1 34 12 D X1 RA1 R4 R3 R2 R1 B6 Q1 B1 R6 R5 R7 18 2 1 CN1 DG C4 R17 R16 PSUP1378Z PbF 17 D3V C5 C3 R8 R9 R11 R12 R13 R14 R10 C2 C1 B2 Marked PbF ...

Page 19: ...CPU ROM F 16kB RAM F 512B GND CN1 TO DPT SCLK TxD RxD BUSY RESET 56k X1 4MHz Function Key 12 LED drive Q1 3 LED drive Key out Q4 Q5 Key out Key in OPDET TO DPT LED CO1 12 2color 3 3V KX T7603X BLOCK DIAGRAM ...

Page 20: ...SW1 CO1 SW2 CO2 SW3 CO3 SW4 CO4 SW8 CO8 SW7 CO7 SW6 CO6 SW5 CO5 SW9 CO9 SW10 CO10 SW11 CO11 SW12 CO12 Q4 1 6 2 5 3 4 Q5 1 6 2 5 3 4 RA1 1 2K 1 2 3 4 5 6 7 8 DG DG D3V D3V D3V DG A1 A2 A3 A4 B1 B2 B3 B4 B5 B6 E1 E2 E3 TP16 TP3 TP7 TP10 TP6 TP8 TP9 TP17 TP18 TP19 TP20 R G G R G R G R R G G R G R G R G R G R G R G R 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 KX T7603X MAIN BOARD 1 2 ...

Page 21: ...7 31 P06 32 P05 33 P04 34 P03 35 P02 36 P01 37 P00 38 Vdd1 39 Vss1 40 P17 41 P16 42 P15 43 P14 44 P13 R12 100 D3V DG CN1 17 D3V 16 D3V 4 SCLK 5 RxD 6 TxD 3 BUSY 2 Rx_RDY 7 Tx_EN 8 OSX 9 OSR 10 OSYNC 12 OCK2M 14 RESET 15 SIDE_CONNECT 13 GND 11 GND 1 GND 18 D3V R15 10k R16 56k D NC C4 NC R17 R14 100 R11 100 R13 100 NC C5 TP12 TP2 TP13 TP14 TP15 TP11 TP31 TP27 TP26 TP25 TP24 TP23 TP22 TP34 TP33 TP32 ...

Page 22: ...Pin29 of IC1 Pin5 of CN1 Pin6 of CN1 Pin2 of CN1 2 1 Between DPT and T7603 Communication waveform Pin14 of IC1 4 00MHz ...

Page 23: ...4 A1 A2 B4 B3 Q4 Q3 Q2 Q5 E2 E1 R15 E3 11 1 44 IC1 34 12 D X1 RA1 R4 R3 R2 R1 B6 Q1 B1 R6 R5 R7 18 2 1 A CN1 DG C4 R17 R16 PSUP1378Z PbF 17 D3V C5 C3 R8 R9 R11 R12 R13 R14 R10 C2 C1 B2 KX T7603X COMPONENT VIEW ...

Page 24: ...SW12 SW11 SW10 SW9 SW8 SW7 SW6 SW5 SW4 SW3 SW2 SW1 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 KX T7603X BOTTOM VIEW ...

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