SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
7-11
7-4. Speaker Part(Melody)
U600 pin7,32 = 2.7V?
Speaker does not work
Check the Clock signal
at Pin 1 of U600
(13.5MHz)
Check the clock generation circuit
(related to U401 and U600)
END
No
Yes
No
Resolder or replace U401
U600 pin 4 ≒ 2.7V?
(When u100 operate)
Resolder u100
Yes
No
Yes
Is Speaker working?
No
Change the Speaker
Yes
Yes