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Description

Cct Ref

Parts Number

Description

Cct Ref

Parts Number

S.M. CAP

C2106 ECUV1H102JCX

50V

1nF

S.M. CAP

C2107 ECUV1H102JCX

50V

1nF

S.M. CAP

C2108 ECUV1H102JCX

50V

1nF

S.M. CAP

C2109 ECUV1H102JCX

50V

1nF

S.M. CAP

C2110 ECUV1H102JCX

50V

1nF

ELECT   

C2111 ECA1CM100GB

16V

10µF

ELECT   

C2112 ECA1CM100GB

16V

10µF

ELECT   

C2113 ECA1HM3R3GB

50V

3.3µF

ELECT

C2114 

ECJ2VF1H104Z

350V

   

100nF

S.M. CAP

C2115 ECUV1H221JCX

50V

220pF

S.M. CAP

C2116 ECUV1H221JCX

50V

220pF

S.M. CAP

C2117 ECUV1H221JCX

50V

220pF

S.M. CAP

C2118 ECUV1H221JCX

50V

220pF

S.M. CAP

C2119 ECUV1H221JCX

50V

220pF

S.M. CAP

C2120 ECUV1H221JCX

50V

220pF

ELECT   

C2121 ECA1CM100GB

16V

10µF

ELECT

C2122 

ECJ2VF1H104Z

350V

   

100nF

S.M. CAP

C2123 ECUV1H221JCX

50V

220pF

S.M. CAP

C2124 ECUV1H070DTX

50V

70pF

S.M. CAP

C2125 ECUV1H470JCX

50V

47pF

S.M. CAP

C2126 ECUV1H070DTX

50V

70pF

S.M. CAP

C2127 ECUV1H010CCX

50V

1pF

S.M. CAP

C2128 ECUV1H010CCX

50V

1pF

ELECT

C2129 

ECA1CM102B  

16V

   

1pF

ELECT   

C2130 ECA1CM331B

16V

330µF

S.M. CAP

C2131 ECUV1H103ZFX

50V

10nF

S.M. CAP

C2132 ECUV1H103ZFX

50V

10nF

S.M. CAP

C2134 ECUV1H103ZFX

50V

10nF

ELECT   

C2135 ECA1HM101GB

50V

100µF

ELECT

C2136 

ECJ2VF1H104Z

350V

   

100nF

ELECT   

C2137 ECA1CM100GB

16V

10µF

S.M. CAP

C2138 ECUV1H471KBX

50V

470pF

S.M. CAP

C2139 ECUV1H221JCX

50V

220pF

ELECT   

C2140 ECA1HM101GB

50V

100µF

S.M. CAP

C2141 ECUV1H152JCX

50V

1.5pF

S.M. CAP

C2301 ECUV1H222JCX

50V

2.2nF

ELECT   

C2302 ECA1CM470GB

16V

47µF

S.M. CAP

C2303 ECUV1H222JCX

50V

2.2nF

ELECT   

C2304 ECA1CM470GB

16V

47µF

S.M. CAP

C3001 ECUV1H222JCX

50V

2.2nF

S.M. CAP

C3002 ECUV1H222JCX

50V

2.2nF

ELECT   

C3003 ECA1CM470GB

16V

47µF

S.M. CAP

C3005 ECUV1H561JCX

50V

560pF

ELECT

C3006 

ECJ3VB1C474K

3.5KV

   

470nF

S.M. CAP

C3007 ECUV1H222JCX

50V

2.2nF

S.M. CAP

C3008 ECUV1H222JCX

50V

2.2nF

S.M. CAP

C3009 ECUV1H222JCX

50V

2.2nF

ELECT   

C3010 ECA1CM470GB

16V

47µF

S.M. CAP

C3012 ECUV1H561JCX

50V

560pF

ELECT

C3013 

ECJ3VB1C474K

3.5KV

   

470nF

S.M. CAP

C3014 ECUV1H222JCX

50V

2.2nF

S.M. CAP

C3015 ECUV1H222JCX

50V

2.2nF

S.M. CAP

C3016 ECUV1H222JCX

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 ECA1HM101GB

50V

100µF

S.M. CAP

C3032 ECUV1H271JCX

50V

270pF

S.M. CAP

C3033 ECUV1H271JCX

50V

270pF

S.M. CAP

C3034 ECUV1H271JCX

50V

270pF

S.M. CAP

C3035 ECUV1H271JCX

50V

270pF

S.M. CAP

C3101 

ECUV1H104KBX

  50V

   

270pF

S.M. CAP

C3102 

ECUV1H104KBX

  50V

   

270pF

S.M. CAP

C3103 ECUV1H561JCX

50V

560pF

S.M. CAP

C3104 ECUV1H561JCX

50V

560pF

S.M. CAP

C3105 ECUV1H561JCX

50V

560pF

S.M. CAP

C3106 ECUV1H561JCX

50V

560pF

ELECT 

  

C3107 ECA1HM470GB

50V

47µF

ELECT   

C3108 ECA1HM470GB

50V

47µF

S.M. CAP

C3111 ECUV1H391JCX

50V

390pF

S.M. CAP

C3112 ECUV1H271JCX

50V

270pF

FILM

C3401 ECQM1H224J

50V

220nF

S.M. CAP

C3402 ECUV1H101JCX

50V

100pF

ELECT 

  

C3403 ECA1HM101GB

50V

100µF

FILM

C3404 ECQM1H224J

50V

220nF

S.M. CAP

C3405 ECUV1H180JCX

50V

18pF

S.M. CAP

C3406 ECUV1H271JCX

50V

270pF

S.M. CAP

C3407 ECUV1H271JCX

50V

270pF

ELECT 

  

C3408 ECA1HM101GB

50V

100µF

ELECT   

C3601 ECA1HM101GB

50V

100µF

S.M. CAP

JSE28 

ECUV1H104KBX

  50V

   

100µF

TERMINALS AND LINKS

RCA / HEADPHONE JACK  

JK2301

JPJ841101320

A.V. TERMINAL    

JK3101

TJB16673    

SWITCHES

SWITCH               

S801  

ESB92S11B   

SWITCH

S1201 EVQ23405R

SWITCH

S1202 EVQ23405R

SWITCH

S1203 EVQ23405R

SWITCH

S1204 EVQ23405R

SWITCH

S1205 EVQ23405R

DIFFERENCES FOR MODEL  TX-25LD4P    

MECHANICAL PARTS

BACK COVER    

    13

TKU8E00310  

C.R.T.             

    14

A59ECF50X41 

CABINET              

    15

TKY8E210    

DEGAUSS COIL        

    16

TLK8E05138  

E P.C.B.             

    17

TNP8EE009AW 

MODEL LABEL      

    18

TQF8E2664   

POWER CORD        

    19

TSX8E0028   

Y P.C.B.             

    20

TNP8EY012AA 

MISCELLANEOUS COMPONENTS

OUTER CARTON        

      

TPC8E4660-1 

TOP CUSHION        

      

TPD8E657    

BOTTOM CUSHION     

      

TPD8E658    

I.C.s

EAROM *          

IC1103

XGL2-01P    

CAPACITORS

CERAMIC 

C551  

ECKC3D152J

2KV

1.5nF

DIFFERENCES FOR MODEL  TX-28LD4P    

MECHANICAL PARTS

BACK COVER    

    13

TKU8E00320  

C.R.T.             

    14

A66ECF50X41 

CABINET              

    15

TKY8E300    

DEGAUSS COIL        

    16

TLK8E05140  

E P.C.B.             

    17

TNP8EE009AV 

MODEL LABEL      

    18

TQF8E2662   

POWER CORD        

    19

TSX8E0027   

20

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...

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