LC-42D72U
4 – 5
No video (3)
No video at UHF/VHF broadcast signal recep-
tion
No video at digital broadcast signal reception
Is the specified TV signal selected on the input
select menu screen?
Is the specified TV signal selected on the input
select menu screen?
Is there the analog video signal output at the
output pin (4) of tuner (TU1101)?
Is there the video signal output at the output pins
(20) and (21) of tuner (TU1101)?
YES
NO
YES
NO
Check the tuner, IC8601 (DE-
MODULATOR) and their periph-
eral circuits (TUN_SDA/SCL,
Q8601).
Check the tuner, IC8601 (DE-MOD-
ULATOR) and their peripheral cir-
cuits (TUN_SDA/SCL, Q8601).
NO
NO
Is there the video signal output at pin (5) of
IC1103 (LEVEL_ADJ)?
Are there the MPEG signal outputs
(US_TS_PKTSYNC, US_TS_EN,
US_TS_DATA, US_TS_CLK) from IC8601?
YES
NO
YES
NO
Does the level adjustment con-
trol signal come from pin (6) of
IC1103 to pin (1) of IC1104?
Check IC8601 and its peripheral
control circuits.
NO
Check IC1104 and its peripheral
circuits. Replace as required.
Are there the MPEG signal inputs
(US_TS_PKTSYNC, US_TS_EN,
US_TS_DATA, US_TS_CLK) at IC8101 (CPU/
DECODER)?
Is there the CVBS3 signal input at pin (N3) of
IC3301 (VPC)?
YES
NO
Check the line between IC8601 and
IC8101.
YES
NO
Check the line between IC1103
and IC3301 (Q2204, Q2208,
etc.).
Are there the MVY[7:0], MVC[7:0] and MVCLK/
MNSYNCO/MVSYNCO signal outputs from
IC8101?
YES
NO
Check IC8101 and its peripheral
circuits.
Содержание Aquos LC-42D72U
Страница 5: ...LC 42D72U 1 1 LC 42D72U Service Manual CHAPTER 1 OPERATION MANUAL 1 SPECIFICATIONS ...
Страница 6: ...LC 42D72U 1 2 2 OPERATION MANUAL ...
Страница 7: ...LC 42D72U 1 3 ...
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Страница 9: ...LC 42D72U 1 5 ...
Страница 10: ...LC 42D72U 1 6 ...
Страница 11: ...LC 42D72U 1 7 ...
Страница 12: ...LC 42D72U 1 8 3 DIMENSIONS ...
Страница 55: ...LC 42D72U 5 3 MEMO ...
Страница 60: ...LC 42D72U 6 5 3 MAIN BLOCK DIAGRAM ع MAIN BLOCK DIAGRAM ...
Страница 61: ...LC 42D72U 6 6 ...
Страница 64: ...LC 42D72U 7 3 3 MAIN UNIT PRINTED WIRING BOARD MAIN Unit Side A ...
Страница 65: ...LC 42D72U 7 4 ...
Страница 66: ...LC 42D72U 7 5 MAIN Unit Side A Chip ...
Страница 67: ...LC 42D72U 7 6 ...
Страница 68: ...LC 42D72U 7 7 MAIN Unit Side B ...
Страница 69: ...LC 42D72U 7 8 ...
Страница 70: ...LC 42D72U 7 9 MAIN Unit Side B Chip ...
Страница 71: ...LC 42D72U 7 10 ...
Страница 74: ...LC 42D72U 7 13 MEMO ...
Страница 76: ...LC 42D72U 8 2 2 SCHEMATIC DIAGRAM KEY Unit 1 2 3 4 5 6 7 9 10 8 J A B C D E F G H I ...
Страница 77: ...LC 42D72U 8 3 R C LED Unit 1 2 3 4 5 6 7 9 10 8 J A B C D E F G H I ...
Страница 78: ...LC 42D72U 8 4 MAIN Unit 1 ...
Страница 79: ...LC 42D72U 8 5 ...
Страница 80: ...LC 42D72U 8 6 MAIN Unit 2 ...
Страница 81: ...LC 42D72U 8 7 ...
Страница 82: ...LC 42D72U 8 8 MAIN Unit 3 ...
Страница 83: ...LC 42D72U 8 9 ...
Страница 84: ...LC 42D72U 8 10 MAIN Unit 4 ...
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Страница 86: ...LC 42D72U 8 12 MAIN Unit 5 ...
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Страница 88: ...LC 42D72U 8 14 MAIN Unit 6 ...
Страница 89: ...LC 42D72U 8 15 ...
Страница 90: ...LC 42D72U 8 16 MAIN Unit 7 ...
Страница 91: ...LC 42D72U 8 17 ...
Страница 92: ...LC 42D72U 8 18 MAIN Unit 8 ...
Страница 93: ...LC 42D72U 8 19 ...
Страница 94: ...LC 42D72U 8 20 ع MAIN Unit 9 ...
Страница 95: ...LC 42D72U 8 21 ...
Страница 96: ...LC 42D72U 8 22 ع MAIN Unit 10 ...
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Страница 98: ...LC 42D72U 8 24 ع MAIN Unit 11 ...
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Страница 100: ...LC 42D72U 8 26 ع MAIN Unit 12 ...
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Страница 102: ...LC 42D72U 8 28 MAIN Unit 13 ...
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Страница 104: ...LC 42D72U 8 30 MAIN Unit 14 ...
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Страница 106: ...LC 42D72U 8 32 MAIN Unit 15 ...
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Страница 108: ...LC 42D72U 8 34 MAIN Unit 16 ...
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Страница 110: ...LC 42D72U 8 36 MAIN Unit 17 ...
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Страница 112: ...LC 42D72U 8 38 MAIN Unit 18 ...
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Страница 114: ...LC 42D72U 8 40 MAIN Unit 19 ...
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Страница 116: ...LC 42D72U 8 42 MAIN Unit 20 ...
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Страница 118: ...LC 42D72U 8 44 MAIN Unit 21 ...
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Страница 120: ...LC 42D72U 8 46 MAIN Unit 22 ...
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Страница 122: ...LC 42D72U 8 48 MAIN Unit 23 ...
Страница 123: ...LC 42D72U 8 49 ...
Страница 124: ...LC 42D72U 8 50 TERMINAL Unit 1 ...
Страница 125: ...LC 42D72U 8 51 ...
Страница 126: ...LC 42D72U 8 52 TERMINAL Unit 2 ...
Страница 127: ...LC 42D72U 8 53 ...
Страница 128: ...LC 42D72U 8 54 MEMO ...
Страница 159: ...LC 42D72U 31 9 PACKING PARTS NOT REPLACEMENT ITEM S2 S3 S4 S4 S1 S5 S4 S4 ...
Страница 161: ...LC 42D72U ...