43
LC-65D90U
TROUBLE SHOOTING TABLE
(Continued)
NO
NO
NO
YES
YES
YES
YES
No picture comes out.
No monitor video output when receiving digital
broadcasting
Is the video signal from the digital unit inputted
to the connectors (DA, P1105) Pin (10)
(Composite) and Pin (8), (6) (S signal) of
AV_UNIT?
Is the video signal inputted to the following
pins of IC1104 (Video_SW)?
<Composite video signal> Pin (8)
<S signal> Pin (11): SY-SUB, Pin (16): SC-
SUB
Is the video signal outputted to the following
pins of IC1104 (Video_SW)?
<Composite video signal> Pin (6)
<S signal> Pin (5): SY-SUB, Pin (3): SC-SUB
Check the monitor output terminals and their
peripheral circuits. (Q1113-5, Q1203-4,
Q1148)
Check the digital unit.
Check the line from P1105 to IC1104.
Check the control signals inputted to pins (2),
(7) and (12) of IC1104.
Summary of Contents for LC-65D90U
Page 56: ...57 LC 65D90U 56 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H OVERALL WIRING DIAGRAM ...
Page 57: ...59 LC 65D90U 58 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SYSTEM BLOCK DIAGRAM ...
Page 58: ...61 LC 65D90U 60 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H DISPLAY BLOCK DIAGRAM ...
Page 59: ...63 LC 65D90U 62 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MAIN BLOCK DIAGRAM ...
Page 60: ...65 LC 65D90U 64 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H DIGITAL BLOCK DIAGRAM ...
Page 61: ...67 LC 65D90U 66 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H AV BLOCK DIAGRAM ...
Page 62: ...69 LC 65D90U 68 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H POWER BLOCK DIAGRAM ...
Page 72: ...87 86 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H DIGITAL Unit Side A ...
Page 74: ...91 90 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H DIGITAL Unit Side B ...
Page 76: ...95 94 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H AV Unit Side A ...
Page 78: ...99 98 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H AV Unit Side B ...
Page 80: ...103 102 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MAIN Unit Side A ...
Page 82: ...107 106 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MAIN Unit Side B ...
Page 84: ...111 110 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H TCON TOP Unit Side A ...
Page 86: ...115 114 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H TCON TOP Unit Side B ...
Page 90: ...122 6 5 4 3 2 1 A B C D E F G H LC 65D90U DC DC Unit Wiring Side ...
Page 92: ...125 124 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MAIN POWER Unit Side A ...
Page 93: ...127 126 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H MAIN POWER Unit Side B ...
Page 94: ...129 128 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SUB POWER Unit Side A ...
Page 95: ...131 130 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SUB POWER Unit Side B ...
Page 96: ...133 132 LC 65D90U 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H LINE FILTER Unit Wiring Side ...