Sharp XG-C55X Service Manual page 49

TROUBLE SHOOTING TABLE for PC I/F UNIT (Continued)
Checking of SOG Circuit
Measure the signal at pin (2) of
IC8365 on the oscilloscope.
Is the composite sync signal
reproduced in correct timing?
No
Measure the land of C8070 on the
oscilloscope.
Is there the Y signal including sync
signal?
Yes
The SOG sync separation circuit
(INPUT PWB) is defective.
Yes
The SOG circuit is normal. End.
No
Go to "Confirmation of Input Signal
Setting".
49
XG-C55X