Sharp PG-M20XU Service Manual page 48

PG-M20S
PG-M20X
» PC I/F Unit-12/12
Checking of DVI Digital Input
Feed the DVI digital signal to
INPUT 1.
Select INPUT 1 for input.
Is the picture appear?
Yes
Is there any disturbance in the
picture?
Yes
Is the color normal?
Yes
The DVI digital input is normal.
Check pin (13) of IC8363 for vertical
sync signal, and check pin (3) of
IC8363 for horizontal sync signal.
Are the sync signals normal?
Yes
Check R8685 for clock signal.
Is the clock signal normal?
Yes
IC8025 and its periphery are
defective.
No
No
No
IC8298 and its periphery are
defective.
No
No
IC8298 and its periphery are
defective.
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