RE: MK4 x axis self test failure
Sure.
It was uploaded to Printables:
https://www.printables.com/model/596813-mk4-loveboard-cover-right-mod
Hi Gregory,
Would you mind share your re-design? I got the same problem, thanks in advance!
RE: MK4 x axis self test failure
Rolled back the firmware as suggested, get 'Homing error X #13304'.
The X axis is much stiffer than the Y axis, takes significantly more force to move it manually. It glided very smoothly before the belt and motor were added.
RE: MK4 x axis self test failure
Additional reason found for suddenly failing self tests, the prusa tool holder from printables. Hope I can save somebody else half an hour of head scratching with this comment. https://www.printables.com/model/547500-prusa-mk4-tool-holder/comments
RE: MK4 x axis self test failure
Rolled back the firmware as suggested, get 'Homing error X #13304'.
The X axis is much stiffer than the Y axis, takes significantly more force to move it manually. It glided very smoothly before the belt and motor were added.
Finally tracked the issue to a badly seated pulley on the right hand side.
RE: MK4 x axis self test failure
I had exactly the same problem. I think this is a very poorly designed part. The single screw can't hold this flush, and the Lovebird cover doesn't fit well enough to hold it in place either. I don't know if this is due to my poor cable routing skills but this feels like something that needs to be looked at.
RE: MK4 x axis self test failure
I can't get past the X self test either. I've been printing for 3 days and everything is perfect. Not passing the self test is making me nuts though because I have to skip the test every time I turn it on. I went through all the suggestions in this thread and I did have a slightly misaligned cable holder. I fixed that and got that last mm of movement and it still fails. There is nothing left int he way it comes in full contact with both ends. Is there a way to permanently cancel this test? I really don't even want to pass it anymore as the printer is performing perfectly and printing all of my models flawlessly.
RE: MK4 x axis self test failure
I came back to say that the new firmware fixed the problem. I passed the self test as soon as I installed it. Thank you to prusa programmers.
RE: MK4 x axis self test failure
Ran into similar issue. My issue was too tight.
The phone with microphone to test how tense belt is - it wasn't accurate. I had it on green when I did the strumming and the test failed. Then I loose it by lot and got it passed.
RE: MK4 x axis self test failure
This turned out to be my problem
RE: MK4 x axis self test failure
Just saying that this was exactly my issue. I replaced the bearings on the extruder, then zipped the wires in the back, but did not pay attention so they fit exactly in those holes. Damn tolerances...
RE: MK4 x axis self test failure
thanks a lot you explan me why my X axis check failed since a while, I goes through this tiny point where my zip lock was not well positionned and I felt it was not so bad but efficient 😉