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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
10-23
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10-1-9. Mp3 part
NO
Replace the Earphone
Are there any signal
at the pin #1, 5 of EAR401?
NO
Check the pin #4, 5 of ZD401
There is no MP3 sound from Earphone
YES
YES
Are there any signal
at the C407, 417?
NO
NO
YES
YES
END
Check the U102
Are there any signal
at the pin #4,6 of EAR401?
Are there any signal
at C451, C452?
NO
YES
Check & Resolve EAR401
Pin 4 of U303 is High?
Check C416, 417
Check the U403
Check the U201
Are there any signal
at the R203?