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9-6. Earphone Part
Earphone does not work
R422, R423, R424, R438
(When UCP200 operates)
SAMSUNG Proprietary-Contents may change without notice
Yes
Check the circuit
of IFC400
OK
Check the voltages of
and R449 are 2.9V
OK
Check the circuit
U401
OK
Is JACK_INT signal
LOW?
Yes
Check EAR SW
Ok
END
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Not OK
Solder pin 5,6 of IFC400
Not OK
Solder R422, R423, R424, R438 and
Not OK
Check UCP200 or Change UCP200
No
Not OK
9-11
Flow Chart of Troubleshooting
, L408, L409 again
R449 again
Check R444
No
Solder R427 again
Solder U404 again
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