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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
3-12
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3-1-5. Speaker Part
Is the terminal of speaker O.K?
NO
Replace the speaker
Are there any signal
at the pin #1, 3 of CN400?
YES
Check the CN400
There is no sound from speaker
YES
NO
Are there any signal at the
pin #J4,J5 of UCD400?
NO
YES
the voltage of L400 is 3.3V?
check R414, R415?
Check U202
NO
the voltage of
C247 is 1.8V?
NO
YES
YES
END
Are there any signal at the pin
#G8,F9,G9 of UCD400?
Check UCP400
NO
YES
Check U838
Check U208