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LGE Internal Use Only
Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
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ΟΝΪ͑ΗΠΣ͑ΥΣΒΚΟΚΟΘ͑ΒΟΕ͑ΤΖΣΧΚΔΖ͑ΡΦΣΡΠΤΖΤ
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89/140
SETTING : After initialize Agilent 8960, Test EGSM900, DCS mode ( or GSM850, PCS mode )
CHECKING FLOW
START
NO
YES
Microphone will work
properly.
YES
Check the signal
Level at each side of TP1.
Is it a few tens
mV AC?
Check the soldering of
TP3,TP4,TP5,TP6,TP7
Make a phone call,
then check TP2 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
4. TROUBLE SHOOTING
Содержание LG-A155
Страница 1: ...Service Manual Model LG A155 Internal Use Only Service Manual LG A155 Date October 2010 Issue 1 0 ...
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