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