Speaker Part(Melody) - Samsung SGH-X600 Service Manual

SG H- X 600 F low Chart of T roubleshooting

6. Speaker Part(Melody)

Speaker does not work
Y es
U 302 pin 5 = 2.85V ?
Y es
C heck the C lock signal
at Pin 1 of U 303
(13M H z)
Y es
U 303 pin 17,18 ¡Ö1.8V ?
(W hen U 303 operate)
Y es
Is Speaker working?
Y es
E N D
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N o
R esolder or replace U 302
N o
C heck the clock generation circuit
(related to O SC 101 and U 302)
N o
N o
7- 10
R esolder U 303
C hange the Speaker