User Guide

5-9 Flow chart of Troubleshooting and Circuit Diagram
5-5 Microphone Part
Microphone does not work
Resolder MIC and
C424, C428, V400, V401
Check
the connection
from MIC
END
No
Ye s
Ye s
Check the circuit
related to U400
Resolder the R419, R420, R423,
C424, C425, C426, C430 and C431
Ye s
No
Check the MIC
No
Replace the MIC
Ye s