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.
Measure the land of C8069
on the oscilloscope screen.
Are the composite sync
signals reproduced in the
specified timing?
The SOG circuit is okay.
End.
Is there the Y signal with the
sync signal added?
Go to "Checking the input
signal settings".
Input PWB defective.
SOG sync pulse separation
circuit defective.
In the process adjustment,
readjust the output line.
Checking the onscreen
display
Are the onscreen display
colors as specified?
Go to "Checking the GA4
and its peripheral parts".
Reprogram the flash ROM.
0
YES
NO
NO
NO
YES
YES
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