Sharp XG-NV7XE (serv.man3) Service Manual ▷ View 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
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
43
XG-NV7XE
XG-NV7XM
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-6
Checking the OSD circuit and its peripheral circuits
Display OSD on the screen.
Yes
No
Are there signals at pins (56), (58),
(71) and (72) of IC8048 (TL8054,
TL8053, TL8052 and TL8051)?
(71) and (72) of IC8048 (TL8054,
TL8053, TL8052 and TL8051)?
IC8029 or its peripheral circuit faulty.
Yes
No
Are there signals at pins (12), (14)
thru (17) and (20) of IC8046?
thru (17) and (20) of IC8046?
IC8048 or its peripheral circuit faulty.
Yes
No
Are there signals at pins (23) thru
(42) of IC8046?
(42) of IC8046?
IC8046 or its peripheral circuit faulty.
IC8048 or its peripheral circuit faulty.
Yes
No
Using remote controller, is there
signal at pin (8) of IC8001?
signal at pin (8) of IC8001?
IC8006 circuit faulty.
IC8001 faulty.
Checking the remote control
Yes
No
Run the remote control. Are there
signals at pin (47) of P8405 connector
(or R294)?
signals at pin (47) of P8405 connector
(or R294)?
Output unit faulty.
43
XG-NV7XE
XG-NV7XM
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-6
Checking the OSD circuit and its peripheral circuits
Display OSD on the screen.
Yes
No
Are there signals at pins (56), (58),
(71) and (72) of IC8048 (TL8054,
TL8053, TL8052 and TL8051)?
(71) and (72) of IC8048 (TL8054,
TL8053, TL8052 and TL8051)?
IC8029 or its peripheral circuit faulty.
Yes
No
Are there signals at pins (12), (14)
thru (17) and (20) of IC8046?
thru (17) and (20) of IC8046?
IC8048 or its peripheral circuit faulty.
Yes
No
Are there signals at pins (23) thru
(42) of IC8046?
(42) of IC8046?
IC8046 or its peripheral circuit faulty.
IC8048 or its peripheral circuit faulty.
Yes
No
Using remote controller, is there
signal at pin (8) of IC8001?
signal at pin (8) of IC8001?
IC8006 circuit faulty.
IC8001 faulty.
Checking the remote control
Yes
No
Run the remote control. Are there
signals at pin (47) of P8405 connector
(or R294)?
signals at pin (47) of P8405 connector
(or R294)?
Output unit faulty.
