Sharp 21KF-80S - Troubleshooting Tables

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21KF-80S
TROUBLESHOOTING TABLES
NO RASTER
Check F701.
Check T701 pin16 voltage.
(Approx. 290V at 220V AC)
Check Secondary Main+B.
(Approx. 118V )
Check R701,Q701
and IC701.
Blown out.
Replace the fuse.
The fuse is again blown
Check IC701,D701,D702,
D703,D704 and C705.
Check CRT connector
K1-K5 bias.
D1001 (Power LED Bright
Red) turns on.
D1001 (Power LED Dark
Red) turns on.
Check C878,
R608 and D603.
Check IC801.
Check D758,IC702
and D751.
Check R605,
Q601 and Q602.
Check the
protector
D1001 turns on
brightly and darkly.
NVM
(IC1002)
TV PROCESSOR
(
IC801
)
SOUND PROCESSOR
(
IC3001
)
TUNER
(TU201)
See many often D1001
flashes in red.
This indicates which IC
to