Sharp XG-V10WU Service Manual page 60

XG-V10WU
AN-SD1U/S422U
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-12
Checking the DVI analog input
With the plug & play fashion
established, feed the DVI
analog signal to INPUT3.
Select the INPUT3 input.
Does image appear onscreen?
Yes
Is the image free of distortion?
3
Is the sync signal of separate
type?
Is the sync signal as specified?
(Check pin (6) of IC330 for the
vertical sync signal and pin (6)
of IC331 for the horizontal sync
signal.)
Sync separation circuit IC330
or IC331 (TL712CPW) or its
peripherals defective.
No
Yes
Are there R, G and B signals?
(Check to see if the R, G and B
signals are coming to pins
(126), (136) and (141) of IC4.)
No
No
Yes
Check the DVI_SOG circuit.
Yes
Are there horizontal and
No
vertical sync signals at TL130
and TL131?
CVIC_IC or IC4 peripherals
defective.
60
No
Yes
DVI connector or its
peripherals defective.
No
Yes
IC302 or its peripherals
defective.