Table of Contents
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Flow Chart of Troubleshooting
1 1 -1-4. Microphone Part
Microphone does not work
Yes
No
Is the assembled status
Reassembled the microphone
of microphone O.K?
Yes
Check the reference voltage on mic path
①
Yes
Resolder or change
No
C111 ≒ 2.8V ?
R500,R501,R502,R505,R514,R517,
C502,C505
Yes
②
No
Is microphone ok?
Check
U101
Yes
END
11-10
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