background image

Description

Cct Ref

Parts Number

Description

Cct Ref

Parts Number

S.M.CARB

R3002 ERJ6GEYJ471

0.1W

5%

470

S.M.CARB

R3003 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3004 ERJ6GEYJ153

0.1W

5%

15K

S.M.CARB

R3005 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3006 ERJ6GEYJ471

0.1W

5%

470

S.M.CARB

R3007 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3008 ERJ6GEYJ153

0.1W

5%

15K

S.M.CARB

R3009 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3010 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3011 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3012 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3013 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3014 ERJ6GEYJ471

0.1W

5%

470

S.M.CARB

R3015 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3016 ERJ6GEYJ153

0.1W

5%

15K

S.M.CARB

R3017 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3018 ERJ6GEYJ471

0.1W

5%

470

S.M.CARB

R3019 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3020 ERJ6GEYJ153

0.1W

5%

15K

S.M.CARB

R3021 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3022 ERJ6GEYJ102

0.1W

5%

1K

S.M.CARB

R3023 ERJ6GEYJ123

0.1W

5%

12K

S.M.CARB

R3024 ERJ6GEYJ472

0.1W

5%

4K7

S.M.CARB

R3025 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3026 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3044 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3046 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3047 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3048 ERJ6GEYJ103

0.1W

5%

10K

S.M.CARB

R3049 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3050 ERJ6GEYJ103

0.1W

5%

10K

S.M.CARB

R3057 ERJ6GEYJ750

0.1W

5%

75

CARBON  

R3101 ERDS1TJ151  

0.5W

5%

150

CARBON  

R3102 ERDS1TJ151  

0.5W

5%

150

METAL   

R3103 

ERG2FJ221   

2W

5%

220

METAL   

R3104 

ERG2FJ221   

2W

5%

220

S.M.CARB

R3105 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3106 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3107 ERJ6GEYJ153

0.1W

5%

15K

S.M.CARB

R3108 ERJ6GEYJ153

0.1W

5%

15K

S.M.CARB

R3402 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3403 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3404 ERJ6GEYJ242 

0.1W

5%

2K4

S.M.CARB

R3405 ERJ6GEYJ104

0.1W

5%

100K

S.M.CARB

R3406 ERJ6GEYJ301 

0.1W

5%

300

S.M.CARB

R3407 ERJ6GEYJ123

0.1W

5%

12K

S.M.CARB

R3408 ERJ6GEYJ472

0.1W

5%

4K7

S.M.CARB

R3409 ERJ6GEYJ750

0.1W

5%

75

S.M.CARB

R3601 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3602 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3603 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3604 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3605 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3606 ERJ6GEYJ101

0.1W

5%

100

S.M.CARB

R3607 ERJ6GEYJ472

0.1W

5%

4K7

S.M.CARB

R3608 ERJ6GEYJ752 

0.1W

5%

7K5

S.M.CARB

R3609 ERJ6GEY0R00

0.1W

5%

0

S.M.CARB

R3610 ERJ6GEYJ102

0.1W

5%

1K

CAPACITORS

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  

ECA1CM221GB

16V

220µF

S.M. CAP

C121  

ECUV1H561KBX

50V

560pF

S.M. CAP

C122  

ECUV1H102KBX

50V

1nF

S.M. CAP

C123  

ECUV1H102KBX

50V

1nF

S.M. CAP

C124  

ECUV1H220JCX

50V

22pF

S.M. CAP

C125  

ECUV1H100DCX

50V

10pF

ELECT   

C251  

ECA1EM100GB 

  25V

   

10pF

S.M. CAP

C252  

ECUV1H223KBX

50V

   

22nF

ELECT   

C253  

ECA1HM4R7GB

50V

4.7µF

FILM    

C254  

ECQM1H184J  

  50V

   

4.7µF

ELECT   

C255  

ECA1EM101GB 

25V

   

100µF

S.M. CAP

C256  

ECUV1H223KBX

50V

   

22nF

ELECT   

C257  

ECA1HM4R7GB

50V

4.7µF

ELECT   

C258  

ECA1EM100GB 

  25V

   

4.7µF

FILM    

C259  

ECQM1H184J  

  50V

   

4.7µF

ELECT   

C260  

ECA1VM102GB

35V

1nF

ELECT   

C261  

ECA1VM102GB

35V

1nF

FILM

C262  

ECQM1H474J

50V

470nF

ELECT   

C263  

ECA1HM010GB

50V

1µF

ELECT

C264  

ECA1HHG222E 

50V

   

1µF

FILM

C265  

ECQM1H474J

50V

470nF

ELECT   

C266  

ECA1HM010GB

50V

1µF

ELECT

C267  

ECJ2VB1H104K

350V

   

100nF

ELECT

C268  

ECJ2VB1H104K

350V

   

100nF

ELECT

C270  

ECJ2VB1H104K

350V

   

100nF

ELECT

C301  

ECJ2VB1C104K

350V

   

100nF

ELECT

C302  

ECJ2VB1C104K

350V

   

100nF

ELECT

C303  

ECJ2VB1C104K

350V

   

100nF

ELECT   

C304  

ECA1CM100GB

16V

10µF

FILM

C354  

ECQM2104KZ

250V

100nF

S.M. CAP

C355  

ECUV1H471JCX

50V

470pF

S.M. CAP

C356  

ECUV1H471JCX

50V

470pF

S.M. CAP

C357  

ECUV1H471JCX

50V

470pF

FILM

C358  

ECQM1H224J

50V

220nF

CERAMIC 

C360  

ECKC3D152J

2KV

1.5nF

ELECT   

C361  

ECA1HMR47GB

50V

1.5nF

ELECT   

C363  

ECA1VM471GB 

35V

   

470µF

S.M. CAP

C364  

ECUV1H103ZFX

50V

10nF

ELECT   

C366  

ECA1CM100GB

16V

10µF

S.M. CAP

C451  

ECUV1H102JX 

  50V

   

10µF

S.M. CAP

C453  

ECUV1H152KBX

  50V

   

10µF

S.M. CAP

C454  

ECUV1H223KBM

  50V

   

10µF

ELECT   

C455  

ECA1HM100GB

50V

10µF

ELECT

C456  

ECA1HHG221B 

50V

   

220µF

FILM

C458  

ECQB1222JF3 

100V

   

2.2nF

FILM    

C459  

222236516154

 160V

   

2.2nF

CERAMIC 

C461  

ECCR2H270J

500V

27pF

FILM

C508  

ECQV1H105JZ

50V

1µF

ELECT   

C509  

ECEA1HU101

50V

100µF

S.M. CAP

C510  

ECUV1H104KBX

  50V

   

100µF

FILM

C511  

ECQM2683JZ

250V

68nF

FILM

C552  

ECWH15H102J

1500V

1nF

FILM    

C554  

ECWF2H514J  

 500V

   

1nF

FILM

C555  

ECWH15H103J 

1500V

   

10nF

FILM    

C556  

ECQM4333JC  

400V

   

33nF

CERAMIC 

C557  

ECKC2H471J

500V

470pF

ELECT

C558  

ECA1HHG471E 

50V

   

470µF

FILM    

C559  

ECWF2H684J  

 500V

   

470µF

ELECT

C560  

ECA2GHG2R2B 

400V

   

470µF

ELECT

C561  

ECA1EHG102B 

25V

   

470µF

CERAMIC 

C562  

ECKC2H101J

500V

100pF

ELECT

C563  

ECA2EHG220B 

250V

   

20µF

18

Summary of Contents for TX-28LD4P

Page 1: ...C 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...

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

Page 3: ...500mV rms 1k AV1 IN Video 21 pin 1V p p 75 Audio 21 pin 500mV rms 10k RGB 21 pin AV1 OUT Video 21 pin 1V p p 75 Audio 21 pin 500mV rms 1k AV2 IN Video 21 pin 1V p p 75 Audio 21 pin 500mV rms 10k S Vid...

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 W...

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: ...h 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 Al...

Page 7: ...s 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 wi...

Page 8: ...75mV 64 S 64 S 3V H Out IC601 Pin 50 Vert Out IC601 Pin 31 20mS 0 7V 13 S 3 7V SCL IC1201 Pin 3 R Out E8 Pin 5 64 S 4 6V HFLB IC601 Pin 13 64 S 6 2V R Out IC601 Pin 37 64 S 275mV G Out IC601 Pin 38 27...

Page 9: ...l 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 changin...

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 Q9...

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 HEA...

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...

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 PROCESS...

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: ...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 REGUL...

Page 16: ...OR 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 TRANSISTO...

Page 17: ...RJ6GEY0R00 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...

Page 18: ...3 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 8...

Page 19: ...03 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...

Page 20: ...ORS 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 10 F S M CAP C109 ECUV1H102JC...

Page 21: ...0V 1 5nF CERAMIC C850 ECKC3D471JB 2KV 470pF ELECT C851 ECA2CM221E 160V 220 F ELECT C852 ECA2CHG101E 160V 100 F CERAMIC C853 ECKC2H471J 500V 470pF ELECT C854 ECA1EM102GB 25V 100 F CERAMIC C855 ECKC2H47...

Page 22: ...UV1H222JCX 50V 2 2nF ELECT C3017 ECA1CM470GB 16V 47 F 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 2n...

Page 23: ...ber 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...

Page 24: ...ng 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 c...

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 E...

Page 30: ...54 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...

Reviews: