Question Z-axis stepper motor not working

Hi, I just tried to first run my Q series (after a long time sitting down)

Everything went ok, but when I tried jogging there was problem with z-axis stepper motor - it moved very slowly constantly jamming, making very very small moves, then after few times it moved ok. And then when I tryed it again (after shut down cnc) it again jammed, and finally after another shut down it is not working anymore - I can not jog or initialize z axis. I tried to remove stepper from lead screw and still not working. Controls and wiring seams ok. Is the stepper dead? Or there could be another problem? Can I easily test if the stepper is dead? Thank you!

you can easily test the stepper by changing the wires to the X-ax connectors on the control board.

That's if your X-ax is working correctly.

Ok, I tested the motor - I swapped Z and X axis and same problem appers on X axis.
So I oppened the driver box and reinstalled Z axis modul (take it out, cleaned, and put it back), and now everything works!! Thank you!

Happy to be of help for you.

enjoy your steppie