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SAMSUNG Proprietary-Contents may change without notice
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Flow Chart of Troubleshooting
9-12
9-6. Earphone Part
END
Yes
Earphone does not work
Yes
Not OK
Resolder IFC300 pin 4,5
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,L304,L304
Resolder R302, R303, L304,L304
OK
No
Check pin 15, 3 of U505
No
Check C217, C218
or not change UCP 200
Is JACK_INT signal
LOW?
(When UCP101 operate)
Resolder R348