Read Sharp XG-NV7XE (serv.man3) Service Manual online
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.
