Sharp XV-Z9000U Service Manual page 41

Checking the SOG circuit
Measure the signal at
TL8136 on the
oscilloscope.
Is the composite sync
signal played back timely?
NO
Measure the land of C8069
on the oscilloscope.
Is there the Y signal
including the sync signal?
YES
SOG sync separation
circuit defective.
Checking the on-screen
display.
Is the on-screen display
color as specified?
NO
Carry out the output line
adjustment in the
adjustment process.
0
YES
There is no problem with
the SOG circuit. End.
NO
Go to "Checking the input
signal settings".
Input PWB defective.
YES
Go to "Checking the GA4
peripheral circuits".
Get the flash ROM
reprogrammed.
41
XV-Z9000U/E