Read Sharp XG-C40XE (serv.man5) Service Manual online
42
XG-C40XU/XE
Checking the Sync Signal Circuit and its Peripheral Circuits
Are there signals at pins (13) thru
(52), except for GND, of P8405?
(52), except for GND, of P8405?
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
Yes
Is the sync signal of split type?
Are there signals at TP8004 and
TP8005?
TP8005?
Is the sync signal of Sync On Green
type?
type?
Are there signals at pin (7) of IC8611?
Are there signals at pins (149) (TL80
34) and (150) (TL8035) of IC8020?
34) and (150) (TL8035) of IC8020?
Does the input have a resolution lower
than XGA or is it video input?
than XGA or is it video input?
Are there signals at pins (26) (TL8043),
(28) (TL8041) and (29) (TL8042) of
IC8020?
(28) (TL8041) and (29) (TL8042) of
IC8020?
IC8610 or terminal PWB defective.
IC8025 or its peripheral part faulty.
IC8611 or its peripheral part faulty.
IC8020 or its peripheral part faulty.
IC8029,IC8609 or its peripheral
part faulty.
part faulty.
5
6
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-3
Checking the clock circuit and its peripheral circuits
Yes
No
Is X8001 (6MHz) oscillating?
X8001 or its peripheral part faulty.
Yes
Yes
Yes
No
No
No
Is X8003 (1.84MHz) oscillating?
Is X8004 (22.165MHz) oscillating?
Is X8005 (18.75MHz) oscillating?
X8005 or its peripheral part faulty.
X8004 or its peripheral part faulty.
X8003 or its peripheral part faulty.
Yes
No
IC8001 or its peripheral circuit faulty.
Does pin (162) of IC8001 function?
5
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-2
Click on the first or last page to see other XG-C40XE (serv.man5) service manuals if exist.