Table of Contents
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Flow Chart of Troubleshooting
9-5. Microphone Part - Earphone MIC
Earphone mic. does not work
Yes
Not OK
Check the connection
Resolder IFC400 pin 3,4
from IFC400
OK
No
Check JACK IN is low
Resolder IFC400, R427
when ear jack is inserted.
Yes
No
Check the circuit
Resolder C401, C403, L402, L403,
EAR MIC
R400 and C402 again
Yes
No
Is Earphone MIC working?
Repeat sequence
Yes
END
9-9
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