Sharp XG-C58X Service Manual page 50

XG-C58X
XG-C68X
TROUBLE SHOOTING TABLE for PC I/F UNIT (Continued)
Checking of Video Input
Feed the composite video signal
to INPUT3.
Select INPUT3 using the set's key
or the remote controller.
5
Does the picture appear?
Is there any disturbance in the
picture?
Are the colors normal?
The video input is normal. End.
Is the video signal inputted to
C8141?
No
Yes
Yes
No
Go to "Checking of Video
Sync Signal".
No
Yes
No
Yes
Is there the signal at R8114?
6
Q8002 or its periphery is
defective.
The INPUT/OUTPUT PWB is
defective.
No
Yes
No
Is there the signal at pin (3)
of SC8002?
50
Go to "Checking of Video
Sync Signal".
Carry out the process
adjustment.
5
Yes
R8114 or its periphery is
defective.