Panasonic TX-28XD90P Service Manual Download Page 1

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Service Support

Service and repair of

this product is

supported by

Panasonic's LUCI

interface.

This interface provides a

link between the TV and

a standard PC to allow a

number of diagnostic

and control functions to

be performed.

For more details contact

your local Panasonic

company.

BACK

EXIT

TX-28/25XD90P

Service Manual

/A/B

Safety

Specifications

Block Diagrams

Schematic Diagrams

PCB Views

Self Check

Service

Information

Parts List

Service Hints

Disassembly

Location of

Controls

Waveforms

Mechanical

View

Adjustments

Summary of Contents for TX-28XD90P

Page 1: ...o allow a number of diagnostic and control functions to be performed For more details contact your local Panasonic company BACK EXIT TX 28 25XD90P Service Manual A B Safety Specifications Block Diagra...

Page 2: ...BACK BACK BACK M Schematic F Schematic D Schematic Y Schematic H Schematic E Schematic M PCB Y PCB F PCBs H PCB D PCB E PCB Power supply Audio Video Control...

Page 3: ...k 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 Video IN Y 1V...

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 11 screws as shown in Fig 2 LOCATION OF CONTROLS 3 Screws Fig 2 Fig 3 M Board F Board E Board H Board D Board Y Board Focus Screen...

Page 6: ...espective wiring clips and rotate the chassis vertically through 90 clockwise 3 Locate the base of the chassis frame into the hole B shown in Fig 6 4 Clip the chassis frame onto the bead clamper A as...

Page 7: ...lf Check is also used to automatically check the bus lines and hexadecimal code of the TV set If the CCU ports have been checked and found to be incorrect or not located then will appear in place of O...

Page 8: ...n 41 2 2V 32 s Vert Drive IC451 Pin 2 8ms 63V Vert Out IC601 Pin 1 8 6ms 0 6V VFLB IC451 Pin 5 1V 8 6ms Video In IC1101 Pin 68 0 9V 64 s H Out IC601 Pin 8 3 9V 32 s HFLB IC601 Pin 13 32 s 7V 32 s 1V R...

Page 9: ...on Alignment Function Settings Special features Horizontal Position H Pos 020 Optimum setting Vertical Position V Pos 024 Optimum setting Horizontal Amplitude H Amp 049 Optimum setting Vert Amplitude...

Page 10: ...V 3 L Q V 3 3 L Q V 3 L Q V 9 3 6 3 L Q V 3 L Q V 8 3 L Q V 0 H P R U 3 L Q V Q G 3 3 L Q V 3 L Q V 3 L Q V 3 L Q V 3 L Q V 3 L Q V 3 L Q V 3 L Q V 3 L Q V 3 L Q V 4 4 4 4 4 4 4 4 4 9 4 9 0 9 9 5 R X...

Page 11: ...5 6 3 6 6 6 6 6 L Q 5 L Q L Q 6 5 L Q 6 L Q 6 5 L Q 0 R Q R 0 6 3 5 R X W R X W R X W 5 R X W 4 4 L Q 5 L Q 5 R X W R X W 4 4 4 4 7 R 6 3 L Q 5 L Q 5 R X W R X W 4 4 3 9 X G L R 0 R Q L W R U 2 X W 5...

Page 12: ...Q N Q 9 L Q N 2 X W H 6 F D Q 6 O R Z 6 O R Z 9 H W 5 6 7 2 1 6 6 6 5 6 7 6 6 6 6 6 6 4 6 6 4 4 4 4 0 4 4 4 4 9 3 U R W 9 3 U R W 9 3 U R W 0 L F U R S U R F H V V R U 4 6 Z L W F K L Q J 0 D W U L 5...

Page 13: ...32 5 6833 7 21 2 5 0...

Page 14: ...PARTS LOCATION 12 NOTE The numbers on the exploded view below refer to the mechanical section of the Replacement Parts List 12 3 27 18 13 15 16 25 26 23 19 21 11 22 14 17 9 10 20 7 8 4 5 24 6 1 2...

Page 15: ...3 62 3 16758 7 21 22 6 74 01 8 5 1 520 1 1 74 34 32 6 81 5 1 74 58 1 6 17 5 7 5 8 76 8 2 287387 7 4 1 5 287387 7 4 1 5 287387 7 4 1 5 287387 7 30 5 8 725 9 57 287387 7 1 9 2 352 6625 1 32 5 6833 6 1 5...

Page 16: ...16 6725 4 75 16 6725 4 75 16 6725 4 75 16 6725 4 75 16 6725 4 75 16 6725 4 75 16 6725 4 75 16 6725 4 6 5 75 16 6725 4 6 5 75 16 6725 4 75 16 6725 4 75 16 6725 4 75 16 6725 4 75 16 6725 4 75 16 6725 4...

Page 17: ...9 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 5 9 2 7 7 5 2 6 7 2 6 7 2 6 7 2 6 7 2 7 7 5 2 5 9 2 6 7 2 6 7 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7 5 2 7 7...

Page 18: ...0 7 5 5 7 5 21 5 5 7 5 21 5 5 7 5 21 5 5 7 5 21 0 5 5 7 5 21 0 5 5 7 5 21 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6...

Page 19: ...5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0...

Page 20: ...0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 5 6 0 5 5 5 5 6 0 5 5 5 6 0 5 5 5 1 60 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5...

Page 21: ...5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 5 6 0 5 5 5 6 0 5 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6 0 5 5 5 6...

Page 22: ...0 7 9 S 89 6 0 3 9 Q 40 0 9 Q 0 7 9 S 5 0 9 Q 89 6 0 3 9 S 40 0 9 Q 9 7 9 90 7 9 Q 90 7 9 Q 0 7 9 S 0 7 2 8 7 9 0 7 9 Q 4 0 9 89 6 0 3 9 Q 40 0 9 Q 40 0 9 Q 5 0 9 Q 4 0 9 Q 0 7 9 Q 5 0 9 Q 0 7 9 Q 9 0...

Page 23: ...0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 Q 1 8 7 9 89 6 0 3 9 Q 0 7 9 S 89 6 0 3 9 Q 89 6 0 3 9 S 0 7 9 S 89 6 0 3 9 Q 89 6 0 3 9 Q 89 6 0 3 9 S 89 6 0 3 9 Q...

Page 24: ...0 3 9 Q 89 6 0 3 9 S 89 6 0 3 9 Q 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9...

Page 25: ...1 7 9 89 6 0 3 9 Q 0 7 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 89 6 0 3 9 S 0 7 9 S 0 7 9 89 6 0 3 9 Q 89 6 0 3 9 0 7 9 S 0 7 9 S 0 7 9 0 7 9 S 0 7 9 S 0 7 9 S 89 6 0 3 9 Q 0 7 9 S 0...

Page 26: ...5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 5 5 6 0 5 6 7 6 6 6 6 6 7 6 94 5 6 7 6 94 5 6 7 6 94 5 6 7 6 94...

Page 27: ...1 6 25 02 7 3 0 1 3 576 7 8 29 5 57 7 1 7 713 3 7 866 2 7 3 225 713 1 3 7 3 723 3 1 74 02 7 32 5 87721 7 3 5 7 3 1 7 3 63 5 1 7 7 3 7 3 1 713 3 0 6 1 286 20321 176 73 287 5 5721 73 86 21 723 73 86 21...

Page 28: ...7 3 1 74 02 7 32 5 87721 7 3 5 7 3 1 7 3 63 5 1 7 7 3 723 3 1 713 3 0 6 1 286 20321 176 73 287 5 5721 73 86 21 723 73 86 21 27720 3 7256 9 7 9 Q 5 0 9 Q 17 5 7 5 8 76 3 520 2 6 7 7 5 2 7 7 5 2 5 6 672...

Page 29: ...NOTES 27...

Page 30: ...printing 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...

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Page 37: ...E5 Q1108 A5 D601 B4 IC1104 D5 Q1109 A5 D603 D5 IC1105 B6 Q1110 A5 D605 B5 IC1106 D6 Q1111 C5 D607 B5 IC1901 C6 Q1112 E5 D609 B5 IC2101 B3 Q1113 E5 D610 C4 IC2351 A6 Q1114 C6 D611 C4 IC3001 B1 Q1116 C...

Page 38: ...A2 Q3352 A2 DIODE S D351 B3 D352 B3 D361 A2 D362 A2 D371 C3 D372 C2 D373 C3 D374 A1 D375 B2 D387 B1 D901 C1 D902 C1 D903 C1 D910 C1 D911 D2 D3351 A2 D3352 A3 D3353 A1 D3354 C3 T P S TPY1 B3 TPY2 A2 TP...

Page 39: ...Q847 E6 D571 A2 Q848 D7 D575 C1 Q849 E1 D701 E2 Q850 E2 D803 C4 Q852 E7 D807 B6 Q853 D3 D808 B4 Q854 D3 D809 B4 D810 B4 I C S D812 B4 IC801 B4 D813 B4 IC845 D3 D814 C4 IC852 E2 D815 C3 D817 C6 T P S D...

Page 40: ...Q2410 A3 Q2411 A3 Q2412 A3 Q3401 B1 Q3402 C1 Q3403 B1 Q3404 C1 Q3405 C3 Q3406 C3 DIODE S D2401 A2 D2403 A3 D2404 A3 D2405 A3 D2406 A3 D2407 A3 D2408 A3 D3401 C3 D3402 C3 T P S TPH1 D1 TPH2 A2 TPH3 D1...

Page 41: ...F BOARD TNPA1068 TRAN S Q1663 B2 Q1664 B2 Q1665 B2 Q1666 C1 Q1667 C1 I C S IC1502 B3 IC1503 C3 IC1504 D1 IC1505 D2 IC1506 C2 IC1509 C1 IC1510 C1 1 2 3 A B C D...

Page 42: ...F BOARD TNPA1068 TRAN S Q1501 D3 Q1502 C3 Q1503 B2 Q1504 C1 Q1505 C1 Q1506 C1 Q1507 C1 Q1508 C1 Q1509 C1 Q1510 D1 Q1511 D1 Q1519 D1 Q1660 C2 Q1661 C2 Q1662 C2 I C S IC1507 B2 1 2 3 A B C D...

Page 43: ...M BOARD TNP8EM015 TRAN S Q1011 A1 Q1012 A2 DIODE S D1011 A1 I C S IC1011 A1 1 2 A B C D...

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