Samsung SGH E250 Service Manual - Page 46
Speaker PartMelody
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9-6. Speaker Part(Melody) Speaker does not work Yes U500 pin 7 = 2.9V? Yes U500 pin 15,17 ≒ 1.8V? (When U500 operate) Yes HDC600 pin 2,3 ≒ 1.8V? (When U500 operate) Yes Is Speaker working? Yes END Flow Chart of Troubleshooting No Resolder or replace U500 No Resolder U500 No Resolder HDC600 No Change the Speaker 9-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-11
9-6. Speaker Part(Melody)
U500 pin 7 = 2.9V?
Speaker does not work
U500 pin 15,17 ≒ 1.8V?
(When U500 operate)
Resolder U500
No
Yes
No
Resolder or replace U500
Yes
HDC600 pin 2,3 ≒ 1.8V?
(When U500 operate)
Resolder HDC600
No
Yes
END
Yes
Is Speaker working?
Change the Speaker
No
Yes