My UM2 displays the following error message Z screw stuck

[ferdinand981 0]

My UM2  displays the following error message Z screw stuck

However the bill played moves freely by hand but the Um2 is not able to lower the built played even when requested through the advanced menu when I pressed the lower button it just brings the bill plate further up

Edited December 14, 2015 by Guest

[DidierKlein 729]

Can you move it by turning the screw by hand (with printer shut down)?

If yes lift it up by hand and check if the z switch can be actived (you can find it inside the printer underneath the build plate (when it sits at the bottom). At the backside, there is a hole.

The build plate has a screw underneath that goes in that hole to activate the z switch.

You can try to click it with a screw driver

Maybe some plastic is stuck in there

[ferdinand981 0]

I have checked the switch which and it seems to be completely broken

[DidierKlein 729]

It doesn't click when you press it?

You can also see it when turning the printer upside down.

[ferdinand981 0]

I have fixed the problem by replacing the switch with a new one