Sharp XG-P25X Service Manual page 55

TROUBLE SHOOTING TABLE FOR PC I/F UNIT
Checking the DVI SOG circuit
Is there the horizontal sync
signal at TL8082?
NO
Is there the Green signal at pin
(135) of IC8004?
YES
IC8004 or its peripheral
parts defective.
Is there the sync signal at
TL8136?
NO
Are the signals at pin (4) of
IC8023 and pin (4) of IC8336
both at low level?
YES
IC8001 defective.
The DVI analog signals are SOG-separated by
CXA3516R. The Green signal is fed to the SOGIN2
terminal. The DVI SOG sync signal is selected using the
bus switch (IC23).
YES
NO
DVI connector or its peripheral
parts defective.
YES
NO
IC8023 or IC8336 defective.
57
XG-P25X
(Continued)
The DVI SOG circuit is okay.