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3-1-4. Microphone Part
Microphone does not work
Is the assembled status of
microphone O.K?
Check the reference voltage on mic path
VR118 ≒ 2.0V ?
Is microphone ok?
END
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Yes
No
Yes
Yes
No
Yes
No
Yes
Reassembled the microphone
Resolder or change
R150,R148,C140,R152,R149,C144,
R147,R143,C139,R154,C145,C146
Check
UCP101
3-9
Flow Chart of Troubleshooting
①
②
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Table of Contents
Troubleshooting
