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Flow Chart of Troubleshooting
9-8
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9-1-4. Microphone Part
Is the Microphone
assembled correctly?
Microphone does not work
Resold
er
the microphone
Resolder or replace
MIC300
END
No
Yes
Yes
Yes
Yes
No
MIC_BIAS = 2.1V?
No
Check UCP200
Check the reference voltage on mic path
Check the connection MIC
Yes
Check mic-path connection
Resolder C317