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Flow Chart of Troubleshooting
7-5. Microphone Part
Microphone does not work
Check the connection from
Check the circuit
from U200 to MIC
Check CN601 , PIN 8
Check the MIC
Y e s
MIC,
Y e s
Y e s
= ' H ' ?
Y e s
Y e s
END
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No
Resolder MIC
No
(C600 , R603 , R607 , C603 , C608)
No
Check the JACK _ E N signal
No
Replace the MIC
7-11
Resolder the
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