Vibration; Figure 9-33 Motor Circuit Diagram - Huawei U8815 Maintenance Manual

U8815
Maintenance Manual
Signal
MDP_VSYNC_P
LCD_ID0
LCD_ID1
MIPI_DSI_CLK_P
MIPI_DSI_CLK_N

9.4.2 Vibration

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Figure 9-33 Motor circuit diagram

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Figure 9-34 shows the vibration maintenance process.
Issue 1.0 (2012-02-13)
Description
Longitudinal frame
synchronization signal
Supplier ID
Supplier ID
Clock differential signal +
Clock differential signal -
Circuit block diagram
Figure 9-33 shows the motor circuit diagram.
Analysis
The pin VIB_DRV_N of PM8029 is the driver pin of the actuator and the motor is
installed on the PCBA. When the motor is not vibrating, VPH_PWR and VIB_DRV_N
are both at high level.
Troubleshooting Process
Failure: The motor fails to vibrate.
Solution:
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9 Principles and Failure Analysis
Reference Measurement or
Wave Form
1.8
1.8
1.8
1.8
1.8
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