Read Sharp PG-C30XE (serv.man4) Service Manual online
41
PG-C30XE
C
Yes
Yes
No
No
C
Yes
Yes
No
No
Yes
Yes
Yes
Yes
No
No
Is there signal at TL613?
No
Are there signals at pins (10) thru (20)
of IC8051?
of IC8051?
CON4 (P8405), IC8051 or its
peripheral parts faulty.
peripheral parts faulty.
No
IC8609 or its perpheral parts faulty.
output PWB faulty.
No
IC8029 or its peripheral circuit faulty.
Checking the S-
XGA's green video
circuit and its
peripheral circuits
XGA's green video
circuit and its
peripheral circuits
Checking the VGA's
green video circuit
and its peripheral
circuits
green video circuit
and its peripheral
circuits
Yes
No
Is there signal at pin (23) of CON2
(P8404) connector?
(P8404) connector?
Check the video
system's green
video circuit and its
peripheral circuits
system's green
video circuit and its
peripheral circuits
Is there signal at pin (124) of IC8606?
Is there signal at pin (124) of IC8606?
output PWB faulty.
Are there signals at pins (68) thru
(75), (78), (81) thru (85), (87) and (88)
of IC8606?
(75), (78), (81) thru (85), (87) and (88)
of IC8606?
IC8606 or its peripheral circuit faulty.
Are there signals at TL8045 and
TL8047?
TL8047?
Are there signals at pins (165) thru
(177) of IC8020?
(177) of IC8020?
IC8025 or its peripheral circuit faulty.
Are there signals at pins (178) thru
(187) of IC8020?
(187) of IC8020?
IC8020 or its peripheral circuit faulty.
Are there signals at pins (68) thru
(75), (78), (81) thru (85), (87) and (88)
of IC8606?
(75), (78), (81) thru (85), (87) and (88)
of IC8606?
Yes
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-4
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