Touchscreen Failure - Huawei MediaPad 7 Lite S7-931w Maintenance Manual

9.7 Touchscreen Failure

The following figure shows the principles.
2012-10-08
MediaPad 7 Lite Maintenance Manual
Display failure (the
backlight cannot be
illuminated)
Check whether the
U1801 is short circuited.
No
Check whether the
Q1303 is short circuited.
No
Check whether
the J1300 is poorly soldered or is
incorrectly connected.
No
Replace the LCD
monomer.
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INTERNAL
Replace the
Yes
U1801.
Replace the
Yes
Q1303.
Repair the
Yes
J1300.
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