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4. TROUBLE SHOOTING
CHECKING FLOW
SETTING : After initialize Agilent 8960, Test EGSM, DCS mode
START
Voltage VMIC of U101
= DC 2.5V?
YES
Check the signal
Level at each side
of MIC200.
Is it a few tens
mV AC?
YES
Check the soldering of
R221, R222,
C228, C230
YES
Microphone will work
properly.
NO
Replace U101
NO
Replace microphone
NO
Resolder component
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