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Panasonic TX-28LD4P, Service Manual

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Page: 16 / 30

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Description

Cct Ref

Parts Number

Description

Cct Ref

Parts Number

DIODE

D803

1SR124-4AT82

DIODE

D804

1SR124-4AT82

PHOTO COUPLER

D805

TLP621GR-LF2

DIODE

D806

1SR124-4AT82

DIODE

D850

RU4BLF-L1

DIODE

D851

MTZJT776.2B

DIODE

D852

MA165TA5

DIODE

D853

MA2180BLFS

DIODE

D854

TVSRU2AMLFA5

DIODE

D855

FML22SLF610

DIODE

D856

RU4AMLF-M1

DIODE

D857

MTZJT-775.1C

DIODE

D858

MA165TA5

DIODE

D859

MA165TA5

DIODE

D861

MA165TA5

DIODE

D862

MTZJT-7736A

DIODE

D863

MA165TA5

DIODE

D865

MA165TA5

DIODE

D866

MA165TA5

DIODE

D867

EK06-V0

DIODE

D868

1N4150T-77

DIODE

D869

1N4150T-77

DIODE

D870

MA165TA5

DIODE

D871

1N4150T-77

DIODE

D873

MTZJT-775.6C

DIODE

D874

1SR124-4AT82

DIODE

D875

BZX79A75A26A

DIODE

D901

MA165TA5

DIODE

D902

MA165TA5

DIODE

D904

MA165TA5

DIODE

D905

MA165TA5

DIODE

D906

RLS72TE-11

LED

D1051 SLR56UR3FLF

LED

D1071 SLR56UR3FS

DIODE

D1072 MTZJT-778.2C

DIODE

D1101 MA165TA5

DIODE

D1102 MA165TA5

DIODE

D2101 MA723TA5

DIODE

D2102 MA723TA5

DIODE

D2103 MA723TA5

DIODE

D2104 MA723TA5

DIODE

D2105 MTZJT-778.2C

DIODE

D2303 MA723TA5

DIODE

D2304 MA723TA5

DIODE

D3101 MTZJT-778.2C

DIODE

D3102 MTZJT-778.2C

TRANSISTORS

TRANSISTOR

Q101

BC847B

TRANSISTOR

Q102

BC847B

TRANSISTOR

Q104

BC847B

TRANSISTOR

Q105

BC847B

TRANSISTOR

Q251

2SD1328STX

TRANSISTOR

Q252

2SD1328STX

TRANSISTOR

Q253

BC847B

TRANSISTOR

Q254

BC847B

TRANSISTOR

Q301

BC847B

TRANSISTOR

Q302

FMY4T148

TRANSISTOR

Q303

BC847B

TRANSISTOR

Q304

FMY4T148

TRANSISTOR

Q305

BC847B

TRANSISTOR

Q306

FMY4T148

TRANSISTOR

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

2SA1018QTA

TRANSISTOR

Q905

BC847B

TRANSISTOR

Q906

BC847B

TRANSISTOR

Q907

BC857B

TRANSISTOR

Q908

2SA1535ARLB

TRANSISTOR

Q909

2SC3944ARLB

TRANSISTOR

Q950

BC847B

TRANSISTOR

Q951

FMY4T148

TRANSISTOR

Q1051 BC847B

TRANSISTOR

Q1052 BC847B

TRANSISTOR

Q1101 BC847B

TRANSISTOR

Q1104 BC847B

TRANSISTOR

Q1105 BC847B

TRANSISTOR

Q1106 BC847B

TRANSISTOR

Q1107 BC847B

TRANSISTOR

Q1108 BC847B

TRANSISTOR

Q2101

BC857B

TRANSISTOR

Q2102

BC857B

TRANSISTOR

Q2103

BC857B

TRANSISTOR

Q2301 BC847B

TRANSISTOR

Q2302

BC857B

TRANSISTOR

Q2303 BC847B

TRANSISTOR

Q2304

BC857B

TRANSISTOR

Q3001 BC847B

TRANSISTOR

Q3006 BC847B

TRANSISTOR

Q3007 BC847B

TRANSISTOR

Q3401 BC847B

TRANSISTOR

Q3402 BC847B

TRANSISTOR

Q3601 BC847B

TRANSFORMERS

TRANSFORMER

T501

ETH19Y173AY

F.B.T.

T551

ZTFL94002A

TRANSFORMER

T801

ETS39AG1J7AD

TRANSFORMER

T802

ETP35KAN619U

COILS

COIL

L104

EXCELSA35T

COIL

L106

TLTACT100K

COIL

L107

TLTACT6R8K

COIL

L301

TLTACT4R7K

COIL

L302

TLTACT4R7K

COIL

L451

EXCELSA35T

COIL

L501

EXCELSA35T

COIL

L552

ELH5L4105

COIL

L553

ELC08D682E

COIL

L554

ELC18B102L

COIL

L601

TLTACT4R7K

COIL

L602

TLTACT4R7K

COIL

L603

TLTACT4R7K

COIL

L604

TLTACT4R7K

COIL

L606

TLTACT4R7K

COIL

L607

ELJFC2R2KF

COIL

L701

ELC10D822E

COIL

L850

EXCELSA35T

COIL

L851

EXCELSA35T

COIL

L852

ELEIN470KA

14

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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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