Vibration; Huawei Proprietary And Confidential; Copyright © Huawei Technologies Co., Ltd - Huawei U8860 Maintenance Manual

U8860
Maintenance Manual
Troubleshooting process

9.4.3 Vibration

Circuit schematic diagram
Analysis
The PM VIB_DRV_N controls the vibrator's driving voltage. The VIB_DRV_N controls the
motor vibration by setting high level or low level. When the VIB_DRV_N is in low level, the
motor vibrates.
Issue 1.0 (2011-11-14)
The keypad does not
function.
Does the keypad FPC have
defects, such as damage or fold?
N
Does the connector
J1302 have defects, such as cold
soldered, damaged or distorted?
N
Replace U301.

Huawei Proprietary and Confidential

Copyright © Huawei Technologies Co., Ltd
9 Principles and Troubleshooting
Y
Replace the FPC.
Y
Replace J1302.
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