Lge Internal Use Only - LG -A100 Service Manual

CHECKING FLOW
SETTING : After initialize Agilent 8960, Test EGSM900, DCS mode ( or GSM850, PCS mode )
and change speech to echo mode.
Check microphone hole
Make a phone call,
then check TP1 mic bias voltage
Is around 2V?
Check the voltage
Level at TP2 Is
around 1V?
Can hear your voice
through the earpiece?
Microphone will work

LGE Internal Use Only

START
YES
YES
YES
YES
properly.
NO
NO
Change the microphone
NO
Go to speaker trouble.
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4. TROUBLE SHOOTING
Re-download
or replace U102
Only for training and service purposes