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4. TROUBLESHOOTING
Checking Flow
SETTING : After initialize Agilent 8960, Test EGSM, DCS, PCS mode
START
Voltage across C118
is about 2.5V?
Check the signal level at
each side of MIC201.
Is it a few tens mVAC?
Check the soldering of
R207, R209, C211
Change Main board.
MIC will work properly.
No
MIC Bias Voltage
Yes
Yes
Yes
Voltage VMIC of U101
is about 2.5V?
Yes
Resolder R200 & R205.
No
No
- 88 -
No
Replace U101.
Replace the microphone
Resolder R207, R209, C211
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