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Flow Chart of Troubleshooting
9-10
9-6 Microphone Part - Earphone MIC
Earphone mic. does not work
Yes
Not OK
Check the connection
from IFC600
Resolder IFC600 pin 3,4
Yes
Change a Earphone
Is Earphone MIC working?
OK
OK
Resolder R502, C515, C520
Check the circuit
from IFC300 pin 3,4
to UCP300
END
Not OK
No
Summary of Contents for SGH-Z720M
Page 44: ...8 PCB Diagrams 8 1 Top ...
Page 45: ...PCB Diagrams 8 2 Bottom ...