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2-1-8. Receiver Part
Speaker does not work
Are there any signal at
the C125, C175 ?
Yes
Pin#6 of SLC101 = High ?
Yes
Are there any signal at the
R118, R119 ?
Yes
Are there any signal at the
Pin #3,4 of PAM127?
Yes
Are there any signal at the
Pin #2, 10 of U110?
Are there any signal at the
C145, C146 ?
Yes
Is speaker working ?
Yes
END
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No
Check the UCP307
No
No
Check the SLC103
No
Check the PAM127
Check the C131, C133, R104,
No
Check the U110 and related
No
Replace the speaker
SAMSUNG Proprietary-Contents may change without notice
SGH-S400i Flow Chart of Troubleshooting
Are there any signal at the
pin #5, 7 of U126 ?
Change the FPCB
Check the U126
R105
parts
2-25
No
YES
Change the FPCB
Check the SLC103
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