LG LAS950M - System Part

2-19
ELECTRICAL TROUBLESHOOTING GUIDE
3. SYSTEM PART
POWER ON
MAIN Board
FRONT Board
Check IC305, IC308
and SMPS board.
Check IC305, IC308.
STAND-BY LED OK ?
Pin1 of IC305
and pin6 of IC308
are OK?
3.3 VA OK?
NO
NO
NO
YES
YES
Proper cable connect.
MAIN to FRONT cable
connection OK?
NO
YES
3A
Check MICOM
S/W download.
Check Q402, LD400.
3B