After USB connection and power on, enter Mode Off mode, touch B1 and B2, the ERM does not vibrate. No matter what mode is switched, there is no movement in the ERM, but everything is normal for the linear motor.
I have tried to apply voltage to the end of the ERM, and the motor does not rotate. And I apply the same voltage to another ERM of the same model, and it rotates normally. In this way, it can be judged that the ERM has problem.Please help to confirm.Thanks