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5-5 Microphone Part
Microphone does not work
the connection
from MIC
Check the circuit
related to U400
Check the MIC
5-8
Yes
Check
Yes
Yes
Yes
END
No
Resolder MIC and
ZD400, ZD402
No
Resolder the R424, R425, R431,
R434, C435, C438 and C443
No
Replace the MIC
Flow chart of Troubleshooting and Circuit Diagram
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