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Flow Chart of Troubleshooting
10-7
10-1-4. Microphone Part - PHONE Mic
Is the DC bias voltage on
Normal MIC path at R533
2.85V?
Normal Microphone does not work
Is the assembled status of
Normal mic ok?
Check the path around Noraml MIC bias circuit
Reassemble the Normal mic
END
No
Yes
Yes
Yes
Yes
No
No
Is the Normal Mic path
component soldering status
ok ?
Resolder the trouble point
Is Normal microphone ok?
No
Replace the MIC
Содержание SGH-F400
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