Huawei MediaPad 7 Lite S7-931w - Speaker Failure

MediaPad 7 Lite Maintenance Manual
INTERNAL
2012-10-08
Huawei Confidential
Page 47 of 82
Touchscreen
failure
Check whether
the output voltage of the
U1300 is 3.3 V.
No
Check whether
the input voltage
is 5 V and
whether the
U1300 is normal.
Yes
Check whether
the output voltage of the
C1326 is 1.8 V.
No
Check whether the
output voltage of the
U9000 is normal.
Yes
Replace the TP
(touchscreen).
9.8 Speaker Failure
The following figure shows the principles.