Samsung SGH-S730i Service Manual page 42

Flow Chart of Troubleshooting
- Speaker
There is no sound from Speaker
Is the terminal of Speaker O.K?
본 페이지 편집 불가능 합니다!
The pin #4, #8 of U405
편집 가능하도록 해주세요.
Are there any signal at the
pin #3, #9 of U405
Are there any signal at the
pin #9, #12 of U403
Are there any signal at the
YES
are logic high
YES
YES
YES
R432, R433,
YES
END
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NO
Replace the Speaker.
NO
Check UCP200
NO
Check U405
NO
Check U403
NO
Replace or Resoldering
R420, R421, R432,
R433, C440, C441.
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