Panasonic TX-25XD90P, Service Manual

Page 1: ...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 ...

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: ...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 1V p p 75Ω Audio 21 pin 500mV rms 1kΩ Selectable Output 21 pin AV3 IN S Video IN Y 1V p p 75Ω 4 pin C 0 3V p p 75Ω Audio RCAx2 500mV rms10kΩ Video RC...

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 a c cord directly into the a c outlet Do not use an isolation transfo...

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: ...respective 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 shown in Fig 5 5 After servicing ensure all wiring is returned to its original position before returning the receiver to the customer 4 Fig 4 Fig 5 Fig 6 B A ...

Page 7: ...elf 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 K For more in depth TV diagnostics use the LUCI interface as listed below Service Aids To aid in the service of our current chassis there are a number of Service Aids which have been made available ...

Page 8: ...in 41 2 2V 32µs 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 64µs H Out IC601 Pin 8 3 9V 32µs HFLB IC601 Pin 13 32µs 7V 32µs 1V R Y IC601 Pin 26 Luminance In IC601 Pin 28 0 9V 32µs B Y IC601 Pin 27 32µs 1 3V 28µs 6V H Out IC3901 Pin 3 V Out IC3901 Pin 21 0 1V 32µs E W Out IC601 Pin 3 280mV 8 5ms ...

Page 9: ...ton 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 V Amp 029 Optimum setting EW amplitude E W Amp1 022 Optimum setting EW amplitude E W Amp2 000 Optimum setting Trapezium comp Trapez 1 033 Optimum setting Horizontal Parallel H Parallel 032 Optimum se...

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 W R X W R X W 4 4 8 9 8 9 8 9 8 9 8 9 8 9 5 L Q 5 R X W 5 L Q R X W 8 R X W 9 R X W 0 R D U G R D U G R D U G R D U G R D U G 4 9 L Q L Q 9 R X W 9 L Q 5 L Q 9 R X W L Q L Q 7 X Q H U 5 7 9 2 2 5 0 ...

Page 11: ...G 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 5 R 5 L L R 5 R 5 L L R R D U G 7 X Q H U 8 2 2 5 0 ...

Page 12: ...L 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 6 7 6 6 5 6 7 6 6 5 6 7 6 6 5 6 7 5 6 7 6 6 5 6 7 6 6 R D U G 4 4 4 R D U G Y R D U G 9 3 U R W H F W L R Q 4 9 3 U R W 6 O R Z 6 9 L Q N 6 O R Z 6 6 6 21752 2 5 0 ...

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 5525 03 5 7 30 5 8 725 530 5 5 9 5 6 0 52 352 6625 0 0 3 65 0 3520 01 7 7 5 6 7 01 5 7 5 6 7 93 73 93 0 3 6 8 0 93 6 1 0 9 5 8 725 0 0 025 7 3 2 219 5725 0 3 063 33 8 2 352 6625 1 3 03 5 7 9 2 6 7 1 9...

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

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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 9 Q 43 0 9 4 0 9 Q 9 0 9 Q 15 6 7 9 5 5 0 9 S 0 7 9 S 5 0 9 Q 0 9 5 0 9 Q 43 0 9 Q 9 0 9 Q 4 0 9 Q 0 9 0 9 4 0 9 Q 5 0 9 S 89 6 0 3 9 Q 89 6 0 3 9 Q 89 6 0 3 9 S 0 7 9 S 0 7 9 Q 89 6 0 3 9 Q 89 6 0 ...

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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 27720 3 7256 89 6 0 3 9 Q 5 0 9 S 17 5 7 5 8 76 3 520 2 6 7 7 5 2 7 7 5 2 5 6 6725 5 5 0 7 5 5 6 0 5 5 5 60 5 5 1 6 25 02 7 3 0 1 3 576 7 8 29 5 5 7 7 1 7 713 3 7 866 2 7 3 225 713 1 3 7 3 7 3 1 74 0...

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 6725 5 5 0 7 5 5 60 5 5 5 6 0 5 5 1 6 25 02 7 3 0 1 3 576 7 8 29 5 5 7 7 1 7 713 3 7 866 2 7 3 225 713 0 3 7 3 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 ...

Page 29: ...NOTES 27 ...

Page 30: ...of 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 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 e...

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Page 37: ...3 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 C6 D612 C4 IC3801 A2 Q1118 D6 D615 B5 IC3802 C5 Q1901 C6 D616 B5 IC3805 B5 Q2101 B2 D617 D5 IC3806 D1 Q2102 C2 D618 C4 Q2103 B2 D620 B5 T P S Q2301 B2 D651 C4 TPE1 A2 Q2302 A2 D652 C4 TPE2 B3 Q2305 A2...

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 TPY3 C2 TPKR B3 TPKG B2 TPKB C2 I C S IC351 B2 IC361 A1 IC371 C3 IC381 C3 1 2 3 A B C D ...

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 D818 B4 TPDG1 D1 D819 B4 TPDG2 D1 D820 C4 D821 C4 D845 D7 D846 D7 D847 E6 D848 E5 D849 E5 D850 E4 D851 D3 D852 D3 D853 E7 D854 E6 D855 E3 D856 E7 D857 E3 D858 E5 D860 E1 D861 E7 1 2 3 4 5 6 7 A B C 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 TPH004 D1 TPH005 D1 I C S IC2401 A2 IC2402 A3 1 2 3 A B C D ...

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 ...