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.
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