35
21HM-10F
TROUBLESHOOTING TABLES.
Check F701.
Blown out.
Abnormal
Normal
Replace the fuse.
Check R701 Q701.
Check T701 pin16 voltage.
The fuse is again blown out.
and IC701
(Approx. 290V at 220V AC)
Check IC701,D701,D702,
Normal
D703,D704 and C705.
Check Secondary Main+B.
Abnormal
(Approx. 11
0
V)
Normal
YES
Check D758,IC702,IC753
Check CRT connector K1-
D1001 (Power LED Bright Red)
and D762.
K5 bias.
turns on.
NO
Normal
Normal
Abnormal
NO
D1001 (Power LED Dark Red)
Check R615.
Check
Check
turns on
C878.
IC801.
Checking the
D1001 turns on
protector circuit.
brightly and darkly.
(Bus error)
NVM
(IC1002)
See many often D1001
TV PROCESSOR
flashes in red.
(IC801)
This indicates which IC to
check up.
TUNER
(TU201)
NO RASTER
Summary of Contents for 21HM-10F
Page 19: ...21HM 10F 26 ...
Page 28: ...21HM 10F SCHEMATIC DIAGRAM OF CRT F7341N0 00 Version GA 1E CHASSIS MODEL 21HM 10F ...
Page 29: ...21HM 10F Page 29 SCHEMATIC DIAGRAM OF MOTHER UNIT F7340N4 00 Version ...
Page 30: ...SCHEMATIC DIAGRAM OF MOTHER UNIT F7340N4 00 Version Page 30 Page 28 ...
Page 31: ...21HM 10F SCHEMATIC DIAGRAM OF MOTHER UNIT F7340N4 00 Version Page 29 ...
Page 32: ...21HM 10F SCHEMATIC DIAGRAM OF SECAM UNIT F7343N0 00 Version ...
