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Flow Chart of Troubleshooting
9-13
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9-1-6. Microphone Part
YES
NO
NO
Check C500 = 1.8V?
Earphone C501
Microphone does not work
Check UCP301
Replace MIC
YES
END
YES
Is the voice signal
at C511, C519?
Earphone L500, L502
NO
Resolder the Mic
and check the connection
from mic
YES