LG LG-P350 - Page 127

4. TROUBLE SHOOTING
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4.13.4. Microphone for Main MIC
Main Microphone path as below:
MIC Æ TP1(FB600) Æ TP2(C315) Æ MSM7227
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uv
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uv
Make some sound to MIC
The signal appear at
TP1(FB600)?
No
Yes
The signal appear at
TP2(C315)?
START
END
Re-solder at TP1
or Change the Main MIC
No
Yes
Change the Main B’d
MICBIAS(C305) is 1.8V?
Yes
Make a Call
No
Change the Main B’d