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CHECKING FLOW
SETTING : After initialize Agilent 8960, Test EGSM900, DCS mode ( or GSM850, PCS mode )
START
Check microphone sound hole
Make a phone call,
then check TP1 mic bias signal
comes from U101?
YES
Check the signal
Level at each side of MIC200.
Is it a few tens
mV AC?
YES
Check the soldering of
TP2/TP3
YES
Microphone will work
properly.
Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
NO
1. Check mic Bias signal line
2. Change the U101
NO
Change the microphone
NO
Resolder component
- 95 -
4. TROUBLE SHOOTING
2. TROUBLE SHOOTING
LGE Internal Use Only
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