Why does my machine not work but light is on ?

Why does my machine not work but light is on ?

To confirm the issue in detail, could you please kindly help us confirm the following information?
1. Adjust the speed regulator to a faster speed.
2. Replace the speed regulator with a new one to see
3. Tighten the locking screw on the motor shaft.
4. Check the motor's wiring to ensure it is secure.
5. When the power is on, gently tap the housing of the motor with the handle of a flat-blade screwdriver to cause the motor to start through vibration.
6. Replace with new motor to see. Please kindly contact us at services@callsupport.com to solve this problem.