Read Sharp XG-NV7XE (serv.man3) Service Manual online
42
XG-NV7XE
XG-NV7XM
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-5
Yes
Yes
No
No
Is there signal at pin (6) of IC8065?
Is there signal at pin (6) of IC8065?
Terminal unit, IC301, IC313 or IC312
defective.
defective.
Yes
Yes
No
No
Is there signal at the base of Q8005?
Is there signal at the base of Q8005?
IC8065 or peripheral part defective.
Yes
Yes
Yes
No
No
Is there signal at pin (6) of IC8009?
Yes
Are there signals at TL8048 and
TL8049?
TL8049?
Is there signal at pin (6) of IC8009?
Q8005 or peripheral part defective.
Yes
Yes
No
No
No
Are there signals at pins (21) thru (27)
as well as (33) thru (40) of IC8009?
as well as (33) thru (40) of IC8009?
Are there signals at pins (21) thru (27)
as well as (33) thru (40) of IC8009?
as well as (33) thru (40) of IC8009?
Are there signals at pins (85) thru (93)
of IC8020?
of IC8020?
IC8009 or peripheral part defective.
Yes
No
Are there signals at pins (74) thru (83)
of IC8020?
of IC8020?
IC8020 or peripheral part defective.
Yes
Yes
No
Are there signals at pins (54), (56), (58),
(60), (62), (64), (66) and (68) of IC8503?
(60), (62), (64), (66) and (68) of IC8503?
Are there signals at pins (2) thru (9) of
IC8296?
IC8296?
IC8296 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
blue video circuit
and its peripheral
parts
blue video circuit
and its peripheral
parts
Checking the VGA
blue video circuit
and its peripheral
parts
blue video circuit
and its peripheral
parts
Yes
No
Are there signals at pins (15) thru (22)
of connector SC8001?
of connector SC8001?
Checking the blue
video circuit and its
peripheral parts
video circuit and its
peripheral parts
F
E
D
H
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