LG -A100 Service Manual page 77

CHECKING FLOW
SETTING : After initialize Agilent 8960, Test EGSM900, DCS mode ( or GSM850, PCS mode )
START
When plug headset,
The profile changes to the
headset mode?
Yes
Set the speech of the test
equipment to PRBS mode
and connect call
Check the signal
Level at TP2 Is a few
hundreds mV AC?
Yes
Set the speech of the test
equipment to echo mode
and connect call
Check the signal
Level at TP3 Is a few
tens mV AC?
Yes
Earphone
working well !
LGE Internal Use Only
No
Check the voltage Level
of TP1 is around 1V?
Yes
Re-download
or Replace U205
Change another Headset
No
and Try again or Re-solder
CN202
Change another Headset
No
and Try again or Re-solder
CN202
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4. TROUBLE SHOOTING
Change another Headset
No
and Try again or Re-solder
CN202
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