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Flow Chart of Troubleshooting
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9-12
9-6. Earphone Part
END
Yes
Earphone does not work
Yes
Not OK
Resolder IFC300 pin 4,5,6
and L304, L305
Check the circuit
EAR 300
OK
Check the R344, R346,
R347, U301 5 pin =2.8V
Not OK
Resolder R344, R346, R347, U301
OK
Not OK
Check the circuit
R302, R303, U502
Resolder R302, R303
OK
No
Check R515, R516, C217, C218
No
Check UCP 200 or Change UCP 200
Is JACK_INT signal
LOW?
(When UCP101 operate)
Resolder R348
Check EAR SW
Resolder U301
