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G700-U10 Smartphone
Maintenance Manual
10.4.8 Motor Circuit
Circuit Diagram
Figure 10-41 Motor circuit
Circuit Analysis
The motor is driven by the VIBR_PMU signal output by the MT6320. The chip provides
auto-switchover. Therefore, no external diode is required.
Troubleshooting Process
Figure 10-42 Troubleshooting motor failures
Issue 1.0 (2013-07-22)
Motor failure
Is the motor
properly soldered?
Y
Is the motor
normal?
Y
Resolder or
replace U202
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Copyright © Huawei Technologies Co., Ltd.
N
Resolder the motor
N
Replace the motor
10 Circuit and Failure Analysis
68
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