LG FH6 - System Part

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ELECTRICAL TROUBLESHOOTING GUIDE
3. SYSTEM PART
NO
YES
YES
NO
YES
NO
Power On
“HELLO” display on VFD OK?
Check 20p harness cable.
Check or replace CN401 & CN902.
Check IC301/ IC304/ IC305 and SMPS board.
Check 8p harness cable.
Check supplied power from SMPS board.
Check or replace VFD901.
NO
YES
NO
NO
YES
CN102 & CN401 20P cable
connection OK?
CN102 (pin 4, 6, 10) power OK?
CN402 & CN902 8P cable
connection OK?
CN902 (pin4, 6, 7) power OK?