SAMSUNG Proprietary-Contents may change without notice
Level 3 Repair
8-16
This Document can not be used without Samsung's authorization
8-3-6. Speaker Part
Is there any signal at pin
W18,W19 (TP : R211)?
(Wiring the SPK N/P and
checking an waveform using
oscilloscope)
Speaker does not work
Check the U300
(AUDIO SW output signal &
enable pin)
(TP : 2,10,8pin)
Replace U300 using a Heatgun
(be possible of being UCP a bad sample)
No
Yes
No
Replace UCP200 using a heatgun
Yes
Check the U303,U304
(AUDIO AMP output signal
& enable pin)
(TP : A2,C2,C3 pin)
Resolder C315,C316,R322,R323,
C306,C311,R306,R307
(not work if those is not connected.)
and then replace U303,U304 using a Heatgun
No
Yes
END
Yes
Is Speaker working?
(Listening through the
speaker)
Change Speaker ASS'Y
(be possible of SPK Problems
or not inserting it right.)
No
Yes