Question x axis stuck after jogging too far

Hi,

Got my 420-2 working. Y and z axis work like a charm, but x axis is stuck after initialising. Jog buttons only give a whining sound from the motor. Is there a way to move the x axis by hand?

Also, it seems as if the limit switch for the x axis is never going to reach the side of the gantry, because of the coupler between the stepper motor and the rod. Is there something obvious I'm missing here? Double-checked my assembly and it all seems correct.

Thank you.

Hello corne12,
most likely your x-axis is braced.
If the X-axis is now at the far left stop, loosen the two screws of the X-portal to which the aluminium profile of the X-axis is attached.
Then use the jog keys to move the axis to the left stop, will the X-axis now switch off at the limit switch?
If so, please tighten the screws on the left portal again in this position.
If the X-axis does not move to the right stop, please loosen the screws on the right side of the X-portal and also move there to the stop. And then tighten the screws on the right side of the portal. Now the X-axis should be aligned!

Greetings Reiner