Sharp Aquos LC-32GD4U, Service Manual

Page: 47 / 222

47
LC-32GD4U
LC-37GD4U
TROUBLE SHOOTING TABLE
(Continued)
NO
NO
NO NO
YES
YES YES
YES YES YES
No picture comes out.
(5)
No picture comes out.
(6)
The video signal for digital recording is not given.
The digital video signal is not given.
Check the digital unit.
Is the digital signal from the digital unit inputted/outputted to the connector (SC2101) of MAIN_UNIT? Is the digital signal from SC2101 inputted/outputted to IC801 (FPGA)?
Is the video signal from the digital unit inputted to the connectors (DA, P1
105) of
A
V_UNIT?
Is the video signal inputted to the following pins of IC1
104 (A
V_SW)?
<Composite video signal> Pin (8) <S signal> Pin (1
1): SY
-SUB, Pin (16): SC-
SUB Is the video signal outputted to the following pins of IC1
104 (A
V_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. (Q1
1
13-5, Q1203-4,Q1
148)
Check the digital unit. Check the line from P1
105 to IC1
104.
Check the control signals inputted to pins (2), (7) and (12) of IC1
104.