Sharp XG-NV6XE (serv.man4) Service Manual ▷ View online
45
XG-NV6XE
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-4
C
Yes
Yes
No
No
C
Yes
Yes
No
No
Yes
Yes
Yes
No
No
Yes
Are there signals at TL45 and TL47?
Yes
Yes
No
No
Yes
No
Are there signals at pins (179) thru
(187) of IC8020?
(187) of IC8020?
IC8020 or its peripheral circuit faulty.
Yes
Yes
No
Are there signals at pins (5) and (6) of
P8405 connector?
P8405 connector?
Are there signals at pins (11) thru (20)
of IC8051?
of IC8051?
IC8051 or its peripheral circuit faulty.
No
IC8029 or its perpheral circuit faulty.
No
IC8025 or its peripheral circuit faulty.
P8405 connector or output PWB
faulty.
faulty.
Checking the
SXGA's green video
circuit and its
peripheral circuits
SXGA's green video
circuit and its
peripheral circuits
Checking the VGA's
green video circuit
and its peripheral
circuits
green video circuit
and its peripheral
circuits
Yes
No
Are there signals at pins (25) thru (32)
of P8404 connector?
of P8404 connector?
Check the video
system's green
video circuit and its
peripheral circuits
system's green
video circuit and its
peripheral circuits
Is there signal at pin (8) of IC8004 (or
pin (6) of IC8066)?
pin (6) of IC8066)?
Is there signal at pin (8) of IC8004 (or
pin (6) of IC8066)?
pin (6) of IC8066)?
Output PWB faulty.
Is there signal at the base of Q8007?
Is there signal at the base of Q8007?
IC8004 (or IC8066) or its peripheral
circuit faulty.
circuit faulty.
Is there signal at pin (6) of IC8010?
Is there signal at pin (6) of IC8010?
Q8006 and Q8007 or there peripheral
circuit faulty.
circuit faulty.
Are there signals at pins (21) thru (27)
and (33) thru (40) of IC8010?
and (33) thru (40) of IC8010?
Are there signals at pins (21) thru (27)
and (33) thru (40) of IC8010?
and (33) thru (40) of IC8010?
Are there signals at pins (165) thru
(177) of IC8020?
(177) of IC8020?
IC8010 or its peripheral circuit faulty.
46
XG-NV6XE
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-5
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
Yes
No
No
Yes
Are there signals at TL48 and TL49?
Yes
Yes
No
No
No
Yes
No
Are there signals at pins (74) thru (83)
of IC8020?
of IC8020?
IC8020 or its peripheral circuit faulty.
Yes
Yes
No
No
No
IC8020 or its peripheral circuit faulty.
P8405 connector or output PWB
faulty.
faulty.
Yes
No
Are there signals at pins (15) thru (22)
of P8404 connector?
of P8404 connector?
Check the video
system’s blue video
circuit and its
peripheral circuits.
system’s blue video
circuit and its
peripheral circuits.
Is there signal at pin (3) of IC8004 (or
pin (6) of IC8065)?
pin (6) of IC8065)?
Is there signal at pin (3) of IC8004 (or
pin (6) of IC8065)?
pin (6) of IC8065)?
Output PWB faulty.
Is there signal at the base of Q8005?
Is there signal at the base of Q8005?
IC8004 (or IC8065) or its peripheral
circuit faulty.
circuit faulty.
Is there signal at pin (6) of IC8009?
Is there signal at pin (6) of IC8009?
Q8004 and Q8005 or there peripheral
circuit faulty.
circuit faulty.
Are there signals at pins (21) thru (27)
and (33) thru (40) of IC8009?
and (33) thru (40) of IC8009?
Are there signals at pins (21) thru (27)
and (33) thru (40) of IC8009?
and (33) thru (40) of IC8009?
Are there signals at pins (85) thru (93)
of IC8020?
of IC8020?
IC8009 or its peripheral circuit faulty.
Are there signal at pins (1) and (2) of
P8405 connector?
P8405 connector?
IC8051 or its peripheral circuit faulty.
Are there signal at pins (21) thru (30)
of IC8051?
of IC8051?
IC8018 or its peripheral circuit faulty.
Checking the
SXGA’s blue video
circuit and its
peripheral circuits
SXGA’s blue video
circuit and its
peripheral circuits
Checking the VGA’s
blue video circuit
and its peripheral
circuits
blue video circuit
and its peripheral
circuits
D
D
47
XG-NV6XE
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-6
Checking the OSD circuit and its peripheral circuits
Yes
Display OSD on the screen.
Yes
No
Are there signals at pins (56), (58),
(71) and (72) of IC8048
(TL54,TL53,TL52 and TL51)?
(71) and (72) of IC8048
(TL54,TL53,TL52 and TL51)?
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 circuit 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 PWB faulty.
47
XG-NV6XE
TROUBLE SHOOTING TABLE FOR PC I/F UNIT-6
Checking the OSD circuit and its peripheral circuits
Yes
Display OSD on the screen.
Yes
No
Are there signals at pins (56), (58),
(71) and (72) of IC8048
(TL54,TL53,TL52 and TL51)?
(71) and (72) of IC8048
(TL54,TL53,TL52 and TL51)?
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 circuit 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 PWB faulty.
