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LG HB620 Service Manual

LG HB620
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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
4. TROUBLE SHOOTING
- 91 -
Can you scoping some
sound signal at C330,C33
1
NO
YES
YE
S
Start
MIC_BIAS(R702) is 1.8V?
Change the Main Bíd
NO
Make a call
Work well?
END
YE
S
Change the Main Bíd
Change the MIC
Can you scoping some
sound signal at C330,C33
1
NO
YES
YE
S
Start
MIC_BIAS(R702) is 1.8V?
Change the Maind
NO
Make a call
Work well?
END
YE
S
Change the Maind
Change the MIC
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LG HB620 Specifications

General IconGeneral
BrandLG
ModelHB620
CategoryCell Phone
LanguageEnglish

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