Read Sharp XG-NV7XE (serv.man3) Service Manual online
40
XG-NV7XE
XG-NV7XM
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-3
Yes
Yes
No
No
Is there signal at pin (6) of IC8067?
Is there signal at pin (6) of IC8067?
Terminal unit, IC301, IC313 or IC312
defective.
defective.
Yes
Yes
No
No
Is there signal at the base of Q8009?
Is there signal at the base of Q8009?
IC8067 or peripheral part defective.
Yes
Yes
Yes
No
No
Is there signal at pin (6) of IC8011?
Yes
Are there signals at TL8044 and
TL8046?
TL8046?
Is there signal at pin (6) of IC8011?
Q8009 or peripheral part defective.
Yes
Yes
No
No
No
Are there signals at pins (21) thru (27)
as well as (33) thru (40) of IC8011?
as well as (33) thru (40) of IC8011?
Are there signals at pins (21) thru (27)
as well as (33) thru (40) of IC8011?
as well as (33) thru (40) of IC8011?
Are there signals at pins (112) thru
(119) of IC8020?
(119) of IC8020?
IC8011 or peripheral part defective.
Yes
No
Are there signals at pins (69) thru (73)
as well as (189) thru (192) of IC8020?
as well as (189) thru (192) of IC8020?
IC8020 or peripheral part defective.
Yes
Yes
No
Are there signals at pins (86), (88), (90),
(92), (94), (96), (98) and (100) of IC8503?
(92), (94), (96), (98) and (100) of IC8503?
Are there signals at pins (2) thru (9) of
IC8294?
IC8294?
IC8294 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
red video circuit
and its peripheral
parts
red video circuit
and its peripheral
parts
Checking the VGA
red video circuit
and its peripheral
parts
red video circuit
and its peripheral
parts
Yes
No
Are there signals at pins (35) thru (42)
of connector SC8001?
of connector SC8001?
Checking the red
video circuit and
its peripheral parts
video circuit and
its peripheral parts
F
E
D
F
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