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Panasonic TX-25LD4P, Service Manual

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Panasonic TX-25LD4P Service Manual Download Page 21

Description

Cct Ref

Parts Number

Description

Cct Ref

Parts Number

ELECT   

C564  

ECEA2AU2R2  

 100V

   

20µF

FILM    

C565  

ECQP1H273J  

 100V

   

20µF

CERAMIC 

C566  

ECKC2H471J

500V

470pF

ELECT

C567  

ECA1EHG102B 

25V

   

470pF

CERAMIC 

C568  

ECKC2H471J

500V

470pF

CERAMIC 

C569  

ECKC2H102J

500V

1nF

S.M. CAP

C601  

ECUV1H104KBX

  50V

   

1nF

ELECT   

C602  

ECA1HM101GB

50V

100µF

S.M. CAP

C603  

ECUV1H102JCX

50V

1nF

ELECT

C604  

ECJ2VF1H223Z

350V

   

22nF

ELECT   

C605  

ECA1HM101GB

50V

100µF

ELECT   

C606  

ECA1HM3R3GB

50V

3.3µF

ELECT

C607  

ECJ2VF1H104Z

350V

   

100nF

S.M. CAP

C608  

ECUV1H153KBX

50V

   

15nF

S.M. CAP

C609  

ECUV1H153KBX

50V

   

15nF

S.M. CAP

C610  

ECUV1H153KBX

50V

   

15nF

S.M. CAP

C611  

ECUV1H153KBX

50V

   

15nF

S.M. CAP

C612  

ECUV1H153KBX

50V

   

15nF

S.M. CAP

C613  

ECUV1H153KBX

50V

   

15nF

S.M. CAP

C614  

ECUV1H050CCX

50V

50pF

S.M. CAP

C615  

ECUV1H050CCX

50V

50pF

ELECT   

C616  

ECA1CM100GB

16V

10µF

S.M. CAP

C617  

ECUV1H223KBX

50V

   

22nF

ELECT   

C618  

ECA1CM221GB

16V

220µF

ELECT

C619  

ECJ2VB1H473K

350V

   

47nF

ELECT   

C620  

ECA1HM101GB

50V

100µF

ELECT

C621  

ECJ2VB1C104K

350V

   

100nF

S.M. CAP

C622  

ECUV1H683KBX

50V

   

68nF

S.M. CAP

C623  

ECUV1H102JCX

50V

1nF

ELECT

C624  

ECJ3VB1C474K

3.5KV

   

470nF

ELECT

C625  

ECJ3VB1C474K

3.5KV

   

470nF

ELECT

C626  

ECJ3VB1C474K

3.5KV

   

470nF

ELECT

C627  

ECJ3VB1C474K

3.5KV

   

470nF

ELECT   

C628  

ECA1CM100GB

16V

10µF

S.M. CAP

C629  

ECUV1H104KBX

  50V

   

10µF

S.M. CAP

C630  

ECUV1H100DCX

50V

10pF

S.M. CAP

C631  

ECUV1H683ZFX

50V

68nF

S.M. CAP

C632  

ECUV1H270JCX

50V

27pF

S.M. CAP

C633  

ECUV1H271JCX

50V

270pF

S.M. CAP

C634  

ECUV1H271JCX

50V

270pF

S.M. CAP

C635  

ECUV1H180JCX

50V

18pF

S.M. CAP

C636  

ECUV1H271JCX

50V

270pF

S.M. CAP

C637  

ECUV1H101JCX

50V

100pF

S.M. CAP

C638  

ECUV1H471JCX

50V

470pF

S.M. CAP

C639  

ECUV1H332KBM

  50V

   

470pF

ELECT   

C701  

ECA1HHG101B

50V

100µF

S.M. CAP

C702  

ECUV1H103KBX

50V

10nF

ELECT   

C703  

ECEA1HGE100 

50V

   

10µF

FILM

C704  

ECQB1H223K

50V

22nF

FILM

C705  

ECQB1H222J

50V

2.2nF

FILM

C804  

ECQE2A474MWB

100V

470nF

CERAMIC

C806  

ECKWNA101MBC

400V

   

100µF

CERAMIC 

C807  

ECKC2H472J

500V

4.7nF

CERAMIC 

C808  

ECKC2H472J

500V

4.7nF

CERAMIC 

C809  

ECKC2H472J

500V

4.7nF

CERAMIC 

C810  

ECKC2H472J

500V

4.7nF

ELECT   

C811  

ECOS2GG181NG

400V

180µF

CERAMIC 

C814  

ECKC3D102J

2KV

1nF

CERAMIC

C815  

ECKC1H471J  

50V

   

470pF

ELECT   

C816  

ECA1EM101GB 

25V

   

100µF

FILM

C817  

ECQE6104K

600V

100nF

CERAMIC 

C818  

ECKWNA332MEC

250V

   

3.3nF

FILM

C819  

ECQB1H152K

50V

1.5nF

CERAMIC 

C850  

ECKC3D471JB

2KV

470pF

ELECT

C851  

ECA2CM221E  

160V

   

220µF

ELECT

C852  

ECA2CHG101E 

160V

   

100µF

CERAMIC 

C853  

ECKC2H471J

500V

470pF

ELECT   

C854  

ECA1EM102GB 

25V

   

100µF

CERAMIC 

C855  

ECKC2H471J

500V

470pF

ELECT

C856  

ECA1AHG222B 

10V

   

470pF

CERAMIC 

C857  

ECKC2H471J

500V

470pF

ELECT   

C858  

ECEA1HGE102 

  50V

   

470pF

ELECT

C859  

ECJ2VF1H104Z

350V

   

100nF

ELECT   

C860  

ECA1HM101GB

50V

100µF

ELECT

C862  

ECJ2VF1H104Z

350V

   

100nF

ELECT   

C863  

ECA1HM101GB

50V

100µF

ELECT

C866  

ECJ2VF1H104Z

350V

   

100nF

ELECT   

C867  

ECA1CM100GB

16V

10µF

ELECT   

C868  

ECA1CM100GB

16V

10µF

ELECT   

C869  

ECA1EM101GB 

25V

   

100µF

ELECT   

C870  

ECA1EM471GB

25V

470µF

ELECT

C871  

ECA1CM102B  

16V

   

470µF

ELECT   

C872  

ECA1CM471GB

16V

470µF

ELECT   

C873  

ECA1CM100GB

16V

10µF

ELECT

C875  

ECA2CM4R7B  

160V

   

10µF

ELECT

C876  

ECA1AHG471E 

10V

   

470pF

ELECT   

C902  

ECA1VM101GB

35V

100µF

S.M. CAP

C903  

ECUV1H472KBX

50V

4.7nF

S.M. CAP

C904  

ECUV1H472KBX

50V

4.7nF

S.M. CAP

C906  

ECUV1H471KBX

50V

470pF

S.M. CAP

C908  

ECUV1H151JCX

50V

150pF

CERAMIC 

C909  

ECKC2H472J

500V

4.7nF

CERAMIC 

C910  

ECKC2H472J

500V

4.7nF

S.M. CAP

C911  

ECUV1H151JCX

50V

150pF

ELECT   

C912  

ECEA2CU100  

160V

   

10µF

ELECT   

C913  

ECA1HM101GB

50V

100µF

ELECT   

C914  

ECA1HM101GB

50V

100µF

ELECT

C916  

ECEA2CGE100 

160V

   

10µF

ELECT

C950  

ECJ2VB1C104K

350V

   

100nF

S.M. CAP

C1051 ECUV1H103KBX

50V

10nF

ELECT   

C1052 ECA1HM101GB

50V

100µF

S.M. CAP

C1053 ECUV1H331JCX

50V

330pF

S.M. CAP

C1071 ECUV1H331JCX

50V

330pF

S.M. CAP

C1072 ECUV1H103KBX

50V

10nF

ELECT   

C1073 ECA1HM101GB

50V

100µF

ELECT

C1101 

ECJ2VF1H104Z

350V

   

100nF

ELECT

C1102 ECA0JM101G

6.3V

100µF

S.M. CAP

C1103 ECUV1H220JCX

50V

22pF

S.M. CAP

C1104 ECUV1H220JCX

50V

22pF

S.M. CAP

C1105 ECUV1H101JCX

50V

100pF

ELECT

C1108 ECJ2VB1H333K

350V

   

33nF

ELECT   

C1111 ECA1CM100GB

16V

10µF

S.M. CAP

C1112 ECUV1H103KBX

50V

10nF

ELECT

C1115 

ECJ3VB1C474K

3.5KV

   

470nF

S.M. CAP

C1116 ECUV1H472KBX

50V

4.7nF

ELECT

C1117 

ECJ2VF1H104Z

350V

   

100nF

S.M. CAP

C1118 ECUV1H103KBX

50V

10nF

S.M. CAP

C1119 ECUV1H221JCX

50V

220pF

ELECT

C1120 ECJ2VF1H104Z

350V

   

100nF

S.M. CAP

C1121 ECUV1H221JCX

50V

220pF

S.M. CAP

C1123 ECUV1H101JCX

50V

100pF

S.M. CAP

C1124 ECUV1H101JCX

50V

100pF

S.M. CAP

C1125 ECUV1H101JCX

50V

100pF

S.M. CAP

C1126 ECUV1H101JCX

50V

100pF

S.M. CAP

C1127 ECUV1H221JCX

50V

220pF

S.M. CAP

C1128 

ECUV1H223KBX

50V

   

22nF

S.M. CAP

C1129 ECUV1H270JCX

50V

27pF

S.M. CAP

C2101 ECUV1H102JCX

50V

1nF

S.M. CAP

C2102 ECUV1H102JCX

50V

1nF

S.M. CAP

C2103 ECUV1H102JCX

50V

1nF

S.M. CAP

C2104 ECUV1H102JCX

50V

1nF

S.M. CAP

C2105 ECUV1H102JCX

50V

1nF

19

Summary of Contents for TX-25LD4P

Page 1: ...PC to allow a number of diagnostic and control functions to be performed For more details contact your local Panasonic company BACK EXIT TX 28 25LD4P Service Manual Safety Specifications Block Diagrams Schematic Diagrams PCB Views Self Check Service Information Parts List Service Hints Disassembly Location of Controls Waveforms Mechanical View Adjustments ...

Page 2: ...BACK BACK BACK E Schematic N Schematic H Schematic Y Schematic E PCB Y PCB Audio Power supply Control Video ...

Page 3: ...rms 1kΩ AV1 IN Video 21 pin 1V p p 75Ω Audio 21 pin 500mV rms 10kΩ RGB 21 pin AV1 OUT Video 21 pin 1V p p 75Ω Audio 21 pin 500mV rms 1kΩ AV2 IN Video 21 pin 1V p p 75Ω Audio 21 pin 500mV rms 10kΩ S Video IN Y 1V p p 75Ω 21 pin C 0 3V p p 75Ω AV2 OUT Video 21 pin 1Vp p 75Ω Audio 21 pin 500mV rms 1kΩ Selectable output 21 pin AV3 IN Audio RCAx2 500mV rms 10kΩ Video RCAx1 1V p p 75Ω High Voltage 28 5k...

Page 4: ...abinet part on the receiver such as screw heads aerials connectors control shafts etc When the exposed metallic part has a return path to the chassis the reading should be between 4M ohm and 20M ohm When the exposed metal does not have a return path to the chassis the reading must be infinite LEAKAGE CURRENT HOT CHECK 1 Plug the AC cord directly into the AC outlet Do not use an isolation transform...

Page 5: ...SERVICE HINTS HOW TO REMOVE THE REAR COVER 1 Remove the 12 screws as shown in Fig 2 LOCATION OF CONTROLS 3 SCREWS Fig 2 Fig 3 N Board E Board Y Board Focus Screen H Board ...

Page 6: ...ch the TV on 2 Go into Service Mode as explained above The screen will show 3 Press the BLUE button on the remote control The screen will show 4 Press the STR button on the TV The screen will show 5 All the tuning information stored inside the TV will now be transferred to the Memory Pack This process will take 2 3 minutes to complete and when finished the screen will show Memory Pack to TV proces...

Page 7: ...ls at the front of the set at the same time pressing the STATUS button on the remote control and the screen will show If the CCU ports have been checked and found to be incorrect or not located then will appear in place of O K Service Aids To aid in the service of our current chassis there are a number of Service Aids which have been made available LUCI interface kit Linked Utility Computer Interf...

Page 8: ...275mV 64µS 64µS 3V H Out IC601 Pin 50 Vert Out IC601 Pin 31 20mS 0 7V 13µS 3 7V SCL IC1201 Pin 3 R Out E8 Pin 5 64µS 4 6V HFLB IC601 Pin 13 64µS 6 2V R Out IC601 Pin 37 64µS 275mV G Out IC601 Pin 38 275mV 64µS Vert Drive IC451 Pin 2 20mS 57V HFLB IC701 Pin 8 64µS 1 5V G Out E8 Pin 3 64µS 4 4V SVM Out IC601 Pin 34 88mV 64µS H Out IC701 Pin 5 30mV 64µS ...

Page 9: ...al Linearity V Lin 006 Optimum setting Vertical Symmetry V Sym 002 Optimum setting DVCO DVCO 005 Receive a PAL Colour Bar Pattern For DVCO alignment press Blue button wait until the colours are changing slowly and press STR Cut off DC Cut off 0171 Ug2 Test Ug2 055 O K To adjust Cutoff connect an oscilloscope to the blue cathode adjust cutoff value using the Yellow and Blue buttons until the black ...

Page 10: ... OUT 39 Q305 Q303 Q301 E8 4 3 5 Q353 Q352 Q351 CRT 3 2 1 7 8 9 Y2 4 3 5 IC351 TUNER Q104 5HG OXH UHHQ 9LGHR Q 9 9LGHR 2XW G OUT 38 R OUT 37 G IN 46 R IN 45 Q306 Q304 Q302 Q354 7 7 VM COILS Q905 Q907 Q909 Q908 Q906 SVM OUT 34 Q950 Q951 Q3001 G 38 B 39 Y BOARD E BOARD RGB OUTPUT VIDEO PROCESSOR MICRO PROCESSOR H3 E61 E15 1 6 8 H1 1 6 8 IC3401 8 6 5 H BOARD VIDEO SWITCHING Q3402 8 ...

Page 11: ... OUT 3 L OUT 1 R OUT 3 L OUT 2 R IN 6 L IN 2 R IN 6 L IN 47 ANA_IN1 44 MONO IN DACM_L 25 SC3_IN_R 38 SC1_IN_R 42 SC1_IN_L 41 SC2_OUT_R 27 SC2_OUT_L 28 SC2_IN_R 40 SC2_IN_L 39 Q252 Q251 2 L L 11 4 L HEADPHONE 7 R 5 L E6 1 E7 3 Q2304 Q2302 21 DACA_R 22 DACA_L E BOARD AUDIO PROCESSOR AUDIO OUTPUT AUDIO MONITOR OUT Q2303 Q2301 Q103 49 ANA_IN2 9 ...

Page 12: ... 60 Q854 52 Q853 74 IC1071 81 AV2 8 10 AV1 8 10 12 Q856 75 Q851 Q1106 Q1105 Q1107 Q1104 51 72 73 AV LINK SLOW 2 SLOW 1 SCL 1 SDA 1 59 58 Q3006 Q3007 55 VPROT KEYSCAN ON OFF R C L E D PROT 1 SLOW 2 OUT IN SLOW 1 SERVICE SCL SDA H BOARD E BOARD VIDEO SWITCHING IC2101 8 7 4 AUDIO PROCESSOR MICRO PROCESSOR VIDEO PROCESSOR EAROM REMOTE CONTROL RECEIVER N BOARD 4 E19 4 8 8 N1 Q1051 Q1052 D1071 Q3401 10 ...

Page 13: ... B1 P2 P1 S5 S2 S7 10 9 6 8 5 6 2 6 3 1 6 12V 200V 33V 14V 14V 27V 150V 29V 7V 15V 5V D867 Q852 Q854 Q855 1 D805 R805 R814 IC850 1 2 D862 R854 33V 16 REMOTE CONTROL RECEIVER N BOARD RESET MICRO PROCESSOR AUDIO PROCESSOR VIDEO PROCESSOR EPROM EAROM RESET REG REG REG IC3401 7 VIDEO SWITCHING EW CORRECTION POWER SUPPLY RGB OUTPUT V OUTPUT AUDIO OUTPUT D801 E BOARD Y BOARD E3 2 Y3 2 N1 2 E19 2 E1 4 1 ...

Page 14: ...PARTS LOCATION 12 19 20 16 12 14 15 4 5 7 11 3 18 13 6 17 8 1 9 2 10 NOTE The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List ...

Page 15: ...Q N3 VERTICAL OUTPUT IC451 LA7845N VIDEO PROCESSOR IC601 VDP3108BPPB1 HORIZONTAL OUTPUT IC701 TEA2031A POWER SUPPLY IC801 STRF6654LF51 ERROR AMPLIFER IC850 SE140N 12V REGULATOR IC851 L78M12MRB 8V REGULATOR IC853 AN78L08TA LED RECEIVER IC1051 RPM 637CBRL LED RECEIVER IC1071 RPM6937 V4 MICRO PROCESSOR IC1101 SDA5450C47 EPROM IC1102 27C2001 G01 DIODE IC1104 MN1381 R TA DIODE IC1105 MN1381 T TA AUDIO ...

Page 16: ...TOR Q351 2SA1767 TRANSISTOR Q352 2SA1767 TRANSISTOR Q353 2SA1767 TRANSISTOR Q354 BC857B TRANSISTOR Q451 BC857B TRANSISTOR Q503 2SD2398 M2 TRANSISTOR Q551 BU2508AXLB TRANSISTOR Q552 2SC1473 RN TRANSISTOR Q701 BC857B TRANSISTOR Q850 2SD1273PLB TRANSISTOR Q851 BC857B TRANSISTOR Q852 2SC1383 S TRANSISTOR Q853 BC847B TRANSISTOR Q854 BC847B TRANSISTOR Q855 BC847B TRANSISTOR Q856 BC847B TRANSISTOR Q857 2...

Page 17: ...ERJ6GEY0R00 0 1W 5 0 S M CARB JSE5 ERJ6GEY0R00 0 1W 5 0 S M CARB JA54 ERJ6GEY0R00 0 1W 5 0 S M CARB JA52 ERJ6GEY0R00 0 1W 5 0 S M CARB JSH001 ERJ6GEY0R00 0 1W 5 0 S M CARB JSE3 ERJ6GEY0R00 0 1W 5 0 S M CARB JA2 ERJ8GEY0R00 125W 5 0 S M CARB JA21 ERJ8GEY0R00 125W 5 0 S M CARB JA23 ERJ8GEY0R00 125W 5 0 S M CARB JA1 ERJ8GEY0R00 125W 5 0 S M CARB JA46 ERJ8GEY0R00 125W 5 0 S M CARB JA29 ERJ8GEY0R00 125...

Page 18: ...63 ERJ6GEYJ474 0 1W 5 470K S M CARB R564 ERJ6GEYJ623 0 1W 5 62K S M CARB R566 ERJ6GEYJ563 0 1W 5 56K WOUND R567 ERF7ZK1R0 7W 10 1 S M CARB R601 ERJ6GEYJ101 0 1W 5 100 S M CARB R602 ERJ6GEYJ821 0 1W 5 820 S M CARB R603 ERJ8GEYJ103 125W 5 10K S M CARB R604 ERJ6GEYJ101 0 1W 5 100 CARBON R605 ERD25TJ331 0 25W 5 330 CARBON R606 ERD25TJ331 0 25W 5 330 S M CARB R607 ERJ6GEYJ821 0 1W 5 820 S M CARB R608 E...

Page 19: ...103 0 1W 5 10K S M CARB R1131 ERJ6GEYJ103 0 1W 5 10K S M CARB R1132 ERJ6GEYJ101 0 1W 5 100 S M CARB R1133 ERJ6GEYJ273 0 1W 5 27K S M CARB R1136 ERJ6GEYJ823 0 1W 5 82K S M CARB R1137 ERJ6GEY0R00 0 1W 5 0 S M CARB R1138 ERJ6GEYJ474 0 1W 5 470K S M CARB R1139 ERJ6GEYJ471 0 1W 5 470 S M CARB R1140 ERJ6GEYJ471 0 1W 5 470 S M CARB R1141 ERJ6GEYJ471 0 1W 5 470 S M CARB R1145 ERJ6GEYJ101 0 1W 5 100 S M CA...

Page 20: ...TORS S M CAP C102 ECUV1H103ZFX 50V 10nF ELECT C103 ECJ2VF1H104Z 350V 100nF S M CAP C106 ECUV1H560JCX 50V 56pF ELECT C107 ECJ2VF1H104Z 350V 100nF ELECT C108 ECA1CM100GB 16V 10µF S M CAP C109 ECUV1H102JCX 50V 1nF S M CAP C110 ECUV1H103ZFX 50V 10nF ELECT C111 ECA1HMR33GB 50V 10nF S M CAP C117 ECUV1H103ZFX 50V 10nF ELECT C118 ECJ2VF1H104Z 350V 100nF ELECT C119 ECA1CM221GB 16V 220µF ELECT C120 ECA1CM22...

Page 21: ...50V 1 5nF CERAMIC C850 ECKC3D471JB 2KV 470pF ELECT C851 ECA2CM221E 160V 220µF ELECT C852 ECA2CHG101E 160V 100µF CERAMIC C853 ECKC2H471J 500V 470pF ELECT C854 ECA1EM102GB 25V 100µF CERAMIC C855 ECKC2H471J 500V 470pF ELECT C856 ECA1AHG222B 10V 470pF CERAMIC C857 ECKC2H471J 500V 470pF ELECT C858 ECEA1HGE102 50V 470pF ELECT C859 ECJ2VF1H104Z 350V 100nF ELECT C860 ECA1HM101GB 50V 100µF ELECT C862 ECJ2V...

Page 22: ...CUV1H222JCX 50V 2 2nF ELECT C3017 ECA1CM470GB 16V 47µF S M CAP C3019 ECUV1H561JCX 50V 560pF ELECT C3020 ECJ3VB1C474K 3 5KV 470nF S M CAP C3021 ECUV1H222JCX 50V 2 2nF S M CAP C3022 ECUV1H222JCX 50V 2 2nF S M CAP C3023 ECUV1H222JCX 50V 2 2nF ELECT C3024 ECA1CM470GB 16V 47µF S M CAP C3026 ECUV1H561JCX 50V 560pF ELECT C3027 ECJ3VB1C474K 3 5KV 470nF S M CAP C3028 ECUV1H222JCX 50V 2 2nF ELECT C3029 ECA1...

Page 23: ...mber Description Cct Ref Parts Number Y P C B 20 TNP8EY012AF MISCELLANEOUS COMPONENTS OUTER CARTON TPC8E4659 TOP CUSHION TPD8E655 BOTTOM CUSHION TPD8E656 I C s EAROM IC1103 XGL2 01AP CAPACITORS CERAMIC C551 ECKC3D122J 2KV 1 2nF 21 ...

Page 24: ...nting and are subject to change without notice REMARKS a Do not touch the hot part or the hot and cold parts at the same time as you are liable to a shock hazard b Do not short circuit the hot and cold circuits as electrical components may be damaged c Do not connect an instrument such as an oscilloscope to the hot and cold circuits simultaneously as this may cause fuse failure Connect the earth o...

Page 25: ......

Page 26: ......

Page 27: ......

Page 28: ......

Page 29: ... Q856 F9 D865 I9 IC1104 C9 Q855 J5 D864 I10 IC1103 F8 Q854 B4 D863 G9 IC1102 D10 Q853 B4 D862 N10 IC1101 D8 Q852 B5 D861 J9 IC1051 A10 Q850 F5 D860 I10 IC852 I10 Q701 J5 D859 H5 IC851 G5 Q552 N3 D858 E5 IC850 H4 Q551 K1 D857 E5 IC801 G2 Q503 I2 D855 F4 IC701 K5 Q451 F8 D854 G4 IC601 L7 Q394 K9 D853 H3 IC451 L5 Q305 K9 D852 I4 IC251 D6 Q303 K9 D851 I4 TP S Q302 J9 D850 H4 TPE14 M5 Q301 K9 D806 G2 T...

Page 30: ...354 A7 Q353 G6 Q352 F6 Q351 F6 DIODES D906 F1 D905 G4 D904 D3 D902 G4 D901 G3 D364 C9 D363 C8 D362 B9 D361 B7 D360 D8 D359 G6 D358 E7 D357 F7 D356 G7 D355 F7 D354 G7 TEST POINTS TPY6 B8 TPY5 D5 TPY4 E5 TPY3 F6 TPY2 E7 TPY1 G6 IC S IC351 E8 H G F E D C B A 1 2 3 4 5 6 7 8 9 ...

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