Samsung SGH-F480 Servise Manual page 18

Flow Chart of Troubleshooting
9-1-4. Speaker Part (Melody)
No sound from Speaker
YES
Is the connection of
speaker and PBA OK?
YES
Check the speaker FPCB.
Is the speaker FPCB OK?
YES
Is there any signal
at R507?
YES
Is there any signal
at L500, L501?
YES
Replace speaker Module
YES
END
NO
NO
NO
NO
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Reconnection speaker connector
Replace speaker module
Check UCP300
Check U500
9-8