Read Sharp XG-NV7XE (serv.man3) Service Manual online
41
XG-NV7XE
XG-NV7XM
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-4
Yes
Yes
No
No
Is there signal at pin (6) of IC8066?
Is there signal at pin (6) of IC8066?
Terminal unit, IC301, IC313 or IC312
defective.
defective.
Yes
Yes
No
No
Is there signal at the base of Q8007?
Is there signal at the base of Q8007?
IC8066 or peripheral part defective.
Yes
Yes
Yes
No
No
Is there signal at pin (6) of IC8010?
Yes
Are there signals at TL8045 and
TL8047?
TL8047?
Is there signal at pin (6) of IC8010?
Q8007 or peripheral part defective.
Yes
Yes
No
No
No
Are there signals at pins (21) thru (27)
as well as (33) thru (40) of IC8010?
as well as (33) thru (40) of IC8010?
Are there signals at pins (21) thru (27)
as well as (33) thru (40) of IC8010?
as well as (33) thru (40) of IC8010?
Are there signals at pins (165) thru
(177) of IC8020?
(177) of IC8020?
IC8010 or peripheral part defective.
Yes
No
Are there signals at pins (178) thru
(187) of IC8020?
(187) of IC8020?
IC8020 or peripheral part defective.
Yes
Yes
No
Are there signals at pins (70), (72), (74),
(76), (78), (80), (82) and (84) of IC8503?
(76), (78), (80), (82) and (84) of IC8503?
Are there signals at pins (2) thru (9) of
IC8295?
IC8295?
IC8295 or peripheral part defective.
Formatter unit defective.
No
IC8029 or peripheral part defective.
No
IC8025 or peripheral part defective.
Connector P8503 or formatter unit
defective.
defective.
Checking the SXGA
green video circuit
and its peripheral
parts
green video circuit
and its peripheral
parts
Checking the VGA
green video circuit
and its peripheral
parts
green video circuit
and its peripheral
parts
Yes
No
Are there signals at pins (25) thru (32)
of connector SC8001?
of connector SC8001?
Checking the green
video circuit and its
peripheral parts
video circuit and its
peripheral parts
G
E
D
G
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