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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
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3-18
Check
U202
Check
UCD400
3-1-7. Mp3 Part
NO
Replace the Earphone
Are there any signal
at the pin #5,7 of CN502?
NO
Check C422, C423
and VR526, VR527
There is no MP3 sound from Earphone
YES
YES
The voltage of C237
is 3.3
NO
YES
END
Check the UCD400
Are there any signal
at the pin #9 of CN502?
Are there any signal
at the pin #C8,D8 of UCD400?
NO
YES
The voltage of L400
is 3.3V?
YES
The voltage of
R213 is 1.8
NO
YES
END
NO
Check U838
Check the CN502
Check the UCP300