Microphone Part - Samsung SGH-T519 Service Manual

10-1-5. Microphone Part

Micro-phone does not work
Is the connection status of
HDC300 O.K?
Check the DC bias voltage on
Mic path.
The voltage of C406 is
about 2.2V±10%?
Is microphone OK?
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YES
YES
YES
END
10-11
Flow Chart of Troubleshooting
①
NO
Reconnect connector of HDC300
②
Solder the microphone again
NO
or Replace
R406, R415, R418, R425
NO
Check UCD301