Samsung SGH-S730i Service Manual page 44

Flow Chart of Troubleshooting
2) MP3 is not O.K.
There is no sound from Speaker
Is the terminal of Speaker O.K?
본 페이지 편집 불가능 합니다!
편집 가능하도록 해주세요.
Are there any signal at the
Are there any signal at the
YES
Are there any signal at the
R432, R433, R420, R421
YES
pin #12, #9 of U403
YES
Are there any signal at the
L401, L402.
YES
pin #3, #9 of U405
YES
END
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NO
Replace the Speaker.
NO
Check U400
NO
Check U403
NO
Replace or Resoldering
L401, L402
NO
Replace or Resoldering
U405
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