Sharp XG-P25X Service Manual page 49

TROUBLE SHOOTING TABLE FOR PC I/F UNIT
Checking the SOG circuit
Measure the signal at
TL8136 on the oscilloscope
screen.
Are the composite sync
signals reproduced in the
specified timing?
Measure the land of C8069
on the oscilloscope screen.
Is there the Y signal with the
sync signal added?
SOG sync pulse separation
circuit defective.
Checking the onscreen
display
Are the onscreen display
colors as specified?
In the process adjustment,
readjust the output line.
YES
NO
NO
YES
YES
NO
0
51
The SOG circuit is okay.
End.
Go to "Checking the input
signal settings".
Input PWB defective.
Go to "Checking the GA4
and its peripheral parts".
Reprogram the flash ROM.
XG-P25X
(Continued)