Sharp 21HT-16CS Посібник з експлуатації - Сторінка 35
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NO
Check T701 pin
16 voltage.
Does 290V
NO
appear at pin (16)
of T701 (SMT
Transf.)
Check
R701,S701 and
AC in.
Check F751, D758, C702
IC702, Q752 and R615 line
See Many often D1001
Flashes in red, this indicates which
IC to check up.
Explanation:
NVM
(IC1002)
TV Processor
(IC801)
TUNER
(TU201)
Protector Circuit
(R1028,D615,D612,D509,D510,D614,D604,D605,Q603)
TROUBLESHOOTING TABLES
YES
NO
YES
Does 110V
appear in
) ?
Main+B C752
NO
Power LED dark red
NO RASTER
Check F701
YES
Does F701
appear blown
out?
NO
END
YES
Check D1001
Does Power LED
bright red Turn on?
NO
Check CRT
connector K1-K5
Check C878
35
21HT-15C
21HT-16C
Replace the fuse
Does F701
YES
appear blown
out again?
Check IC701, D701, D702,
D703, D704, C705, Q701
YES
BIAS
Check IC801
Heater
2 Times Flash
3 Times Flash
6 Times Flash