The steps for servo motor testing are as follows:

1. Conduct an initial inspection to ensure the motor is undamaged. Without connecting any circuits, take any two of the three wires of the servo motor, short them together, and then manually rotate the motor shaft to feel for resistance. If there is resistance, it indicates that the motor is basically functioning normally.

2. Connect the servo motor driver to the power source as per the diagram instructions. If the driver displays an error message after being powered on, refer to the manual for troubleshooting. Typically, such errors may be due to the encoder not being connected yet.

After connecting the encoder and powering on, if the display is normal and there are no error messages, you can begin setting up the driver. This usually involves configuring the speed control mode and the position control mode. In the speed control mode, rotate the potentiometer to observe if the motor is operating as expected.

Step 3: Switch the speed control mode to position control mode and connect the motion control card to the pulse and direction interfaces, ensuring that both forward and reverse motor rotation can be self-controlled. At this stage, further adjustment and optimization of the motion control card and connection board are required.

Here are the basic steps for servo motor testing. During the testing process, it is crucial to follow the steps strictly and pay close attention to the motor's operating status to ensure its normal operation.