Thanks for the quick response. I opened up the printer, taking off the side panel. When attempting to tighten the set screw on the stepper motor shaft (clockwise), it's already tight. The stepper motor was already mounted low on the side panel. Is there something I'm missing? By chance, are there any links with video showing this being done?Edited by Guest
Well, after powering back on, it now has "ERROR - STOPPED X or Y switch broken" and to contact firstname.lastname@example.org
- 2 weeks later...
DON'T TAKE OF THE SIDE PANELS!
You don't need to. Unless you meant the metal cover. The metal cover comes off with removing only one or two screws (depending when you got your UM2).
Anyway, it sounds like the set screw fell out. You can try to get one of those at a hardware store. I assume it's an M3 (metric 3mm screw). Shipping is amazing the damage it can do to a printer. Certainly ultimaker support can send you some more set screws. If you live in USA they will ship from memphis.Edited by Guest
Also look carefully at your 3 endstop switches. They are tucked into the corners. When you push the head into the corner (rear left I think) you should hear them click. If not something is in the wrong position - perhaps you have to bend the switch's metal bar a bit or something isn't lined up right.
Oh - the Z endstop switch is in the hole under the Z stage - under the bed you can see a long screw that pokes down into the hole. make sure that one clicks also.
He has GO so no screws to remove for the covering plates. They come off with a bit of force. Putting them back is a bit of a pain (too many points of attachment IMHO).
And if the set screw is missing that just confirms my first suspicion about a loose pulley. Find a replacement for that screw and you'll be good to go. The error message is caused by this as well, I've seen it personally on three different printers.
And the set screw is M4x4mm, not M3.
You probably have a set screw loose. Most likely the one directly on the pulley on the stepper motor shaft. Unfortunately that means you'll have to unmount the stepper motor in order to get to the screw. I would go through each and every pulley and tighten the set screws on them since this seems to be an issue lately.
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