Vibration Motor - Huawei U8666 Maintenance Manual

U8655
Maintenance Manual

9.4.11 Vibration Motor

The motor driver current is controlled by PM VIB_DRV_N.
Issue 1.0 (2012-02-23)
The phone's display does not
turn of f when near the user's
ear during a call
Is the touchscreen panel's
illuminance sensor hole dirty
or blocked?
N
Reinstall the phone's
f irmware. Is the problem
solved?
N
Is U1207 poorly soldered
or dirty?
N
Return the phone
to the f actory
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9 Principles and Failure Analysis
Y
Clean the hole
Y
End
Y
Re-solder, clean
or replace U1207
48