Samsung SGH-P310 Service Manual - Page 49

Speaker Part

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9-1-6. Speaker Part Speaker does not work Is the terminal of NO Speaker OK? YES Check the NO pin 2 of U502 = "LOW" YES Check the circuit NO around U502 YES Check the Pin10 of UCP300 = "LOW" NO YES Check the Pin2 of UCP300 = "LOW" YES Is speaker OK? YES END NO NO Flow Chart of Troubleshooting and Circuit Diagrams Resolder the board to speaker ① Change or resolder R511,R510 ② Change or resolder C504,C503,R504,R501 ③ Check UCP300 ④ Check UCP300 Change speaker 9-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization

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SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting and Circuit Diagrams
9-13
This Document can not be used without Samsung's authorization
9-1-6. Speaker Part
Check the circuit
around U502
Resolder the board
to speaker
NO
Change or resolder
C504,C503,R504,R501
NO
Check
UCP300
NO
YES
YES
Speaker does not work
END
Is the terminal of
Speaker OK?
Check the
pin 2 of U502 = "LOW"
NO
①
②
Change or resolder
R511,R510
YES
Check the Pin10
of UCP300 = "LOW"
YES
Check the Pin2
of UCP300 = "LOW"
NO
Check
UCP300
YES
③
④
Is speaker OK?
NO
Change speaker
YES