Samsung GT-E2370 - Speaker Part

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
: 2,10,8
pin)
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