Protection Mode - LG FH6 Service Manual

ELECTRICAL TROUBLESHOOTING GUIDE

5. PROTECTION MODE

D-Protection/ S-Protection
CN702, CN703 is OK?
(soldering status)
PVDD voltage of IC702 OK?
(40 ~ 50 V)
SPK output line of IC702 OK?
YES
YES
YES
YES
A
NO
NO
Check SMPS board.
NO
Check L701, L702, C720, C738.
3-30
Re-Solder CNT.