Sharp XG-C40XU Anleitung Seite 47

TROUBLE SHOOTING TABLE FOR PC I/F UNIT-8
Checking the OSD circuit and its peripheral circuits
Display OSD on the screen.
Are there signals at pins (56), (58),
(71) and (72) (TL8054,TL8053,TL8052,
TL8051) of IC8048?
Yes
Are there signals at pins (12), (14)
thru (17) and (20) of IC8046?
Yes
Are there signals at pins (23) thru
(42) of IC8046?
Yes
IC8048 or its peripheral circuit faulty.
Checking the remote controllor
Use the remote controller. Is there the
signal at pin (59) of P8405?
Yes
IC8001 circuit faulty.
No
IC8029 or its peripheral circuit faulty.
No
IC8048 or its peripheral circuit faulty.
No
IC8046 or its peripheral circuit faulty.
No
Output PWB faulty.
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XG-C40XU/XE