Keypads - Huawei U8860 Maintenance Manual

U8860
Maintenance Manual

9.4.2 Keypads

The U8860 has seven keys. Four of them are on the touch panel. You can answer a call, hang
up a call, view the menu and back the previous operation by touching them. The GPIO_01
Issue 1.0 (2011-11-14)
Display failure
Is the problem solved after
the software is loaded?
N
Is the connector J1302
cold soldered, damaged
or distorted?
N
Is J1202 Pin2 2.8 V?
N
Is J1201 Pin21 1.8 V?
Y
Is the problem solved after the
LCD is replaced?
N
Replace U201.
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9 Principles and Troubleshooting
Y
End
Y
Replace J1201.
N
Replace U3900.
N
Replace U301.
Y
End
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