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4.13.4 Microphone for main MIC
Main Microphone path as below:
MIC → C445, C446 → C410, C411 → U400 (Audio Codec) → C407, C408 → U200 (MSM6280)
MIC1N, MIC1P
MIC_BIAS(C422) is 1.8V?
make some sound or
Can you s coping some
sound sign al at C446
Can you s coping some
sound sign al at C407
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Start
Make a call
YES
voice to MIC
YES
YES
YES
Work w ell?
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4. TROUBLE SHOOTING
NO
Change the Main B'd
NO
Change th e MIC or
Change th e Main B'd
NO
Change th e Main B'd
END
LGE Internal Use Only
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