Read Sharp XG-P25XE (serv.man12) Service Manual online
XG-P25X
51
TROUBLE SHOOTING TABLE FOR PC I/F UNIT
(Continued)
Checking the SOG circuit
Measure the signal at
TL8136 on the oscilloscope
screen.
TL8136 on the oscilloscope
screen.
Measure the land of C8069
on the oscilloscope screen.
on the oscilloscope screen.
Are the composite sync
signals reproduced in the
specified timing?
signals reproduced in the
specified timing?
The SOG circuit is okay.
End.
End.
Is there the Y signal with the
sync signal added?
sync signal added?
Go to "Checking the input
signal settings".
signal settings".
Input PWB defective.
SOG sync pulse separation
circuit defective.
circuit defective.
In the process adjustment,
readjust the output line.
readjust the output line.
Checking the onscreen
display
display
Are the onscreen display
colors as specified?
colors as specified?
Go to "Checking the GA4
and its peripheral parts".
and its peripheral parts".
Reprogram the flash ROM.
0
YES
NO
NO
NO
YES
YES
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