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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
START
NO
YES
Microphone will work
properly.
SETTING : After initialize Agilent 8960, Test GSM850, PCS mode
YES
Check the signal
Level at each side
of MIC200.
Is it a few tens
mV AC?
Check the soldering of
R231, R235 & R236
Make a phone call,
then check R227 mic bias signal
comes from U102?
NO
Change the microphone
YES
NO
Resolder component
1. Check mic Bias signal line
2. Change the U102
Check microphone sound hole
CHECKING FLOW
Содержание KP210
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Страница 138: ...Note ...
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