4.7.4 Microphone for main MIC
Main Microphone path as below:
MIC
→
C330, C331
→
MSM internal CODEC
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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Can you scoping some
sound signal at C330,C331
NO
YES
YES
Start
MIC_BIAS(R702) is 1.8V?
Change the Main Bíd
NO
Make a call
Work well?
END
YES
Change the Main Bíd
Change the MIC
Can you scoping some
sound signal at C330,C331
NO
YES
YES
Start
MIC_BIAS(R702) is 1.8V?
Change the Main Bíd
NO
Make a call
Work well?
END
YES
Change the Main Bíd
Change the MIC
Z3X-BOX.COM
Содержание HB620
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Страница 203: ...Note Z 3 X B O X C O M ...