Read Sharp XG-P25XE (serv.man12) Service Manual online
XG-P25X
56
TROUBLE SHOOTING TABLE FOR PC I/F UNIT
(Continued)
Feed the DVI analog signal to the
INPUT3 terminal.
INPUT3 terminal.
Select INPUT3 for the input
terminal.
terminal.
Checking the DVI analog input
Does the image appear?
Is the image distorted?
See if there are the R, G and B
signals at pins (126), (136) and
(141) of IC8004.
signals at pins (126), (136) and
(141) of IC8004.
Are there the R, G and B signals?
DVI connector or its peripheral
parts defective.
parts defective.
Are the sync signals of
separation type?
separation type?
Check the DVI SOG circuit.
Check the vertical sync signal and
the horizontal sync signal at pin (6)
of IC8330 and pin (6) of IC8331,
respectively.
the horizontal sync signal at pin (6)
of IC8330 and pin (6) of IC8331,
respectively.
Are the sync signals as
specified?
specified?
Are there the horizontal and
vertical sync signals at TL8130
and TL8131?
vertical sync signals at TL8130
and TL8131?
Sync separation circuit IC8330 or
IC8331 defective.
IC8331 defective.
IC8302 or its peripheral parts
defective.
defective.
IC8025, IC8004 or their
peripheral parts defective.
peripheral parts defective.
3
NO
NO
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
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