Sharp LC-R60HDU Service Manual page 43

TROUBLE SHOOTING TABLE
Checking OSD
NO
Are there input signals at pins (2)
thru (5) of MB on main PWB?
YES
NO
Are there input signals at pins (2)
thru (5) of MB on LCD drive PWB?
YES
NO
Are there output signals at
pins (14) thru (17) of IC1022?
YES
NO
Are there input signals at
pins (9) and (10) of MA?
YES
IC1020 defective.
Are there output signals at pins (24),
(32), (33) and (34) of IC2003?
YES
Check MB and its peripheral
circuits.
MB cable defective.
Check IC1022, IC1801 and
their peripheral circuits.
Check MA and its peripheral
circuits.
43
(Continued)
NO
Check IC2003 and its
peripheral circuits.
LC-R60HDU