Microphone Part - Samsung SGH-G400 Service Manual

Flow Chart of Troubleshooting

9-5. Microphone Part

Microphone does not work
Is the assembled status of
microphone O.K?
C501 is 1.8V
Is microphone ok?
Yes
Yes
Yes
Yes
END
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No
Replace the Front Assy'
No
Check the path around MIC bias circuit
No
Check UCP300
9-10