LG LAP340 - Page 37

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ELECTRICAL TROUBLESHOOTING GUIDE
A
Check IC705 or replace.
Check IC706~708 or replace.
Check connector status.
Check speaker unit or replace.
Check DAC OUT audio trace or replace IC702.
Check IC709 or replace.
IC705 Pin1, 2 signal OK?
IC706 ~ 708 Pin29, 27, 21, 23 OK?
CN701, CN702 signal OK?
IC702 Pin3 signal OK?
IC709 Pin14~18 signal OK?
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES