X or Y switch broken

[toms_tk 0]

Hello,

I recently brought an UM 2 extended. When I select to home, it moves to the left limit switch, As soon as it striked the limit switch it stops moving for a 5 seconds and the screen displays "X or Y switch broken" .

I tried exchanging the X and Y switch, no change!

Removed and again tightened all the rollers and rod's!

Bending the limit switch!

Updating the firmware!

Please help me!!! I am a beginner.

 https://www.youtube.com/watch?v=EwERQwShS5g

[gr5 2,005]

Oh - that's strange. Why is it move so slowly to the right after it hits the switch?

Is the Y axis ever moving at all? I'm wondering if the problem is simply that your Y stepper motor isn't connected at all. When you are doing that procedure - when it is homing X and Y *both* axes should be engaged - in other words you shouldn't be able to push the head in X or Y direction. So do this experiment - with power off or when you first power up, the X and Y axes should move easily if you push them around. But when running that procedure try pushing the head towards the back. Does it move easily? If so then your Y stepper has a broken wire or isn't plugged in or something like that.

[IRobertI 516]

You said you checked all the rollers (we call them pulleys), does that include the ones that sit directly on the motor shafts?

[Kevparang 10]

Try doing this:

When you are homing after the z-axis homes, quickly press the x-limit switch if it stops then we probably know it is not your limit switch and one or both of your stepper motors.

[gr5 2,005]

Try doing this:

When you are homing after the z-axis homes, quickly press the x-limit switch if it stops then we probably know it is not your limit switch and one or both of your stepper motors.

 

Yes - that's another good thing to try - but hit the switch twice quickly (click click) because the homing procedure heads to the switch fast the first time and then moves away about 1mm and then towards it a second time and expects the switch to to "on-off-on" in quick succession.

[Kevparang 10]

I think it is good to click both of them if possible, and if the head stops but moves a bit again, that means your stepper motor is bad because they are supposed to lock.

[tinkergnome 924]

Obviously that's not a new printer, isn't it? Or perhaps even a good looking copy?

Just to be sure: can you make a picture of the manufacurer label (on the bottom of the printer)?

At least the fan shroud looks a bit weird. It's bended and the fans are looking bigger than the original ones.

Is it possible that the printhead just hits the left wall instead of the limit switch?

Edit: the encoder knob is suspicious too and it's missing the "Extended" label on the back of the buildplate.

To be honest: i think it's not an Ultimaker at all... where did you get it from ? You should ask your reseller for help!

Edited July 30, 2016 by Guest

[IRobertI 516]

Yeah, I didn't want to say anything but it looks like a copy to me as well. Different menu button. Missing label around the SDcard slot. Missing "Extended" on the z-cap. Labels on the model cooling fans that I've never seen before. "Extended" text looks too fat. Missing ferrite cores.

[Kevparang 10]

Pink lighting on the push button and turnwheel, yes, nice point!!!

[gr5 2,005]

toms_tk has been silent, lol and yet people still post here. Toms - it's okay if you don't own an UM. You can still post stuff to the forums.

[tinkergnome 924]

toms_tk has been silent, lol and yet people still post here.  Toms - it's okay if you don't own an UM.  You can still post stuff to the forums.

 

Oh, sure- @toms_tk - don't wanted to banish you... don't worry.

It's just a bit harder to give you hints, because no one knows which parts are assembled inside of this beautiful piece of art...

I assume that you'll notice additional issues soon. Just ask - George will do it's best!

[Kevparang 10]

Agreed with you @gr5 I have a RoBo3D and Monoprice MP Select, I post here on the forums, but I do use cura sometimes.