Hello. Today I've assembled my new Black Box and just connected to a 24v Power supply to check if it works but the stepper driver LEDs of (Y, Y2 and Z) are on. Is it right? There is nothing more connected to the black box, only the power supply. I've also connected it to the Lap top and it works but LEDs indicator are still on. I tried to turn the potenciometer screw of the steeper drivers to see if somthing happen, but not, LEDs still on. Thank you!