Vibration Failure - Huawei U9500 Maintenance Manual

U9500 Maintenance Guide
Figure 9-19 shows the process for handling the display failure.
Figure 9-19 Handling process for the display failure

9.2.7 Vibration Failure

Cause
Figure 9-20 and Figure 9-21 show the components, damage on which can cause the vibration
failure.
Issue 1.2 (2012-6-30)
Display failure
Is there nothing
displayed on the
LCD?
Y
Is the LCD properly
installed?
Y
Check whether the LCD
power supply has ±5.4
V output.
Y
Check whether the LCD
backlight power supply's output
is about 27 V.
Y
Replace the LCD.
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N
Use the replacement test
method to locate where (LCD
or PCBA) the fault is.
N
Reconnect the
LCD to the PCBA.
N
Replace U1601 or
peripheral components.
N
Replace U1600 or
peripheral components.
9 Troubleshooting
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