3. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
1. Check Mic hole and mesh Mash on PCB and Mic Rubber in Front Ass’y. Voice Signal OK?
Should match with mesh hole
and MIC holes
2. Check parts about Mic Bias(VA6926_TP15) works well (about 1.77V) ?
3. Check parts about Mic Output (FB6622_TP16) works well ?
– waveform moves
Main PCB Front Assembly
MIC Mesh
MIC Rubber
Sub MIC2
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