Read Sharp XG-NV4SE (serv.man5) Service Manual online
40
XG-NV4SE/SM
XG-NV40SA
XG-NV40SA
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-2
Checking the PLL circuit and its peripheral circuits
Yes
No
Are there signals at pins (4) and (5) of
IC8026?
IC8026?
IC8025 or its peripheral circuit faulty.
Yes
No
Is there signal at pin (236) of IC8025?
No
Are there signals at pins (6) and (22)
of IC8015?
of IC8015?
IC8026 or its peripheral circuit faulty.
IC8025 or its peripheral circuit faulty.
Yes
No
Are there signals at pins (18) and
(19) of IC8015?
(19) of IC8015?
IC8015 or its peripheral circuit faulty.
Yes
Check the video circuit and its
peripheral circuits.
peripheral circuits.
No
Is image as specified at resolution
above S-VGA level?
above S-VGA level?
Check the S-VGA video circuit and its
peripheral circuits.
peripheral circuits.
Yes
No
Is image as specified at resolution
below S-VGA level?
below S-VGA level?
Check the VGA video circuit and its
peripheral circuits.
peripheral circuits.
Yes
No
Hook up a video system. Is the
display as specified?
display as specified?
Check the video system's video
circuit and its peripheral circuits.
circuit and its peripheral circuits.
Yes
A
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