Speaker Part - Samsung SGH-Z650i Service Manual

9-1-5. Speaker Part

There is no sound from speaker
Is the terminal of speaker O.K?
Are there any signal
at the pin #A3, C3 of U304?
YES
Are there any signal
at the pin #10 of U300?
YES
Pin C2 of U304
is High?
NO
Check UCP100
END
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YES
YES
The type of sound from
the speaker is Melody?
NO
NO
Check
U300,
UCP100
YES
Check U304
9-11
Flow Chart of Troubleshooting
NO
Replace the speaker
NO
Check the LCD module
& Replace U304
NO
Are there any signal
at the pin #W17 of UCP100?
YES