Speaker Part - Samsung SGH-P520 Service Manual

10-1-6. Speaker Part

Speaker does not work
Is the terminal of
Speaker OK?
Check the
pi n 1, 2 of S PK400
Check the circuit
around U402
Check the voltage of
R427 is high
Is speaker OK?
END
NO
YES
NO
YES
NO
YES
NO
YES
NO
YES
10-15
Flow Chart of Troubleshooting
check the specker connector
SPK400
①
Change or resolder
SPK400
②
Change or resolder
around U402
③
Check UCP300
Change speaker