START
Replace U100 or Change the board
Microphone will work
properly.
Check the condition of
Main FPCB.
Voltage VMIC of U100
= DC 2.5V?
Re-solder or replace the microphone
Replace Main FPCB
Check the Solder
condition of R416 and
R419, R421, R422,
R435, C422
Re-solder or replace the Component
Check the connection and
Solder condition of CN700
and CN101(Key)
Re-solder or assemble CN700 or CN101(Key)
Yes
No
Yes
Yes
Yes
Yes
No
No
No
No
SETTING : After initialize Agilent 8960, Test EGSM, DCS mode
Put the sound source near The MIC. And Connect the Mobile.
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