1. Please pay special attention to the driving direction, and do not plug it reversely.
2. Do not connect the motor when measuring the voltage, otherwise it is easy to burn the motor.
3. When measuring the voltage, connect the power supply, not just USB power supply.
4. When using on the printer control board, please keep 3pcs jumper cap under the socket.
5. Before adjusting the knob, it must be carried out power off. After the adjustment is completed, the power on measurement shall be carried out to prevent the drive or main board from burning out.
6. When pasting the heat sink, please pay attention to the distance between the heat sink and the pin, or it will cause a short circuit between the heat sink and the leading angle.
7. During working, please do a good job in heat dissipation, such as heat sink and cooling fan, to prevent the abnormal operation of overheating drive.
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