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Flow Chart of Troubleshooting
7-
10
7-5. Microphone Part
Check the connection
from MIC
Check the circuit
from U504 to MIC
Resolder MIC
Resolder the R608, R609, R615, R616,
C608 and C613
END
No
Yes
Yes
Yes
Yes
No
Check the MIC
No
Replace the MIC
Microphone does not work