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Flow Chart of Troubleshooting
3-10
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3-1-4. Microphone Part
Is the assembled status of
microphone O.K?
Microphone does not work
Reassembled the microphone
Resolder or change
R357,R355,C354,R359,R358,C356
R353,C352,C351,R356,C358,C357
END
No
Yes
Yes
Yes
Yes
No
Is microphone ok?
No
Check
UCP100
Check the reference voltage on mic path
VR301
≒
2.0V ?
Yes
①
②