LG CT815 Service Manual page 119

4. TROUBLE SHOOTING
4.10.4 Microphone for main MIC
Main Microphone path as below:
→ →
MIC C209,C210
MIC_BIAS(FB503) is 1.8V?
make some sound or
Can you s coping some
sound signal at C209,C210?
LGE Internal Use Only
MSM7201A
Start
Make a call
YES
voice to MIC
YES
YES
YES
Work w ell?
- 120 -
NO
Change the Main B'd
NO
Change the MIC
END
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