Smps Power Circuit - LG FB163U Service Manual

9. SMPS POWER CIRCUIT

MAIN PART
MAIN PART
YES
Check the FUSE
F901.
YES
Check
the DC V of C905
if DC V is over
400V.
YES
Check the
DC V of C909,C903,C921
If DC V is in 14~19V
And it is steady
YES
Check the
DC V of C981,C945.
If DC V is 6.1V.
YES
Check the
DC V of C950,C951
If DC V is in
29V.
YES
OK
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Only for training and service purposes
NO
Replace the fuse.
NO
Check BD901,LF901,902.
NO
Check IC901,902.
YES
Check short of P9701,P9702 line.
NO
Check short of P9702 line.
NO
Check short of P9701 line.
3-29
NO
Replace IC901,902.
LGE Internal Use Only