XG-P25XE (serv.man12). Troubleshooting table - Sharp Projector Service Manual (repair manual). Page 17

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XG-P25X
52
TROUBLE SHOOTING TABLE FOR PC I/F UNIT 
(Continued)
Feed the composite video signal to 
the INPUT4 terminal.
Using the control panel key or the 
remote controller, select INPUT4.
Select VIDEO as the signal type 
on the user menu.
Do the process 
adjustment.
Is there the video signal at pin 
(72) of IC8338?
Checking the video input
Does the image appear?
Is the image distorted?
Go to "Checking the 
video sync signal".
Go to "Checking the 
video sync signal".
Are the colors as specified?
The video input is okay. End.
Is the video signal as specified?
IC8338 defective.
5
NO
NO
NO
YES
YES
NO
YES
YES
5
6
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