Mk 3 Wizard Failure on 1st Calibration Point

Hello, I just finished assembling my Mk3 but it keeps failing the calibration test! During the Z axis test, it goes up to the top and then on the way down it appears to end in the wrong area and that is when I get a failure notification(picture below). Self-test is coming back good and my belts are tight. I have tried checking the height of my hot-end, tightening belts, and making sure nothing was blocking any axes. My PINDA probe seems to be off of its probing location (See picture).

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So it ended up being two different issues, a belt tension and an improper hot end assembly! Thanks for the responses tho!

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Hey there! I’m not from the Prusa Support team but may be able to help.

Although I never got an error like you’ve described from my kit, there are a couple pointers in the MK3 manual.

Do you know/have a picture of the error message itself? Some things to check may include if the nozzle is clean, if the PINDA is clean (there may be bits of plastic on it or something), if the 3 U-shaped bolts under the heatbed are secured (or at least make sure you can’t jiggle the heat plate around significantly), or just checking if the axes can move freely. Just because the heatbed is pretty heavy the y-axis should have a tiny bit of resistance but there shouldn’t be any problems with tons of friction (or that may be a problem).

If this doesn’t help, try checking the x-axis. Even if the tension of its belt seems fine, it’s good to make sure that there isn’t too much tension. One thing that plagued me for the first week or two of using my kit was that I had the pulley on the x-axis motor on the wrong way (upside down, so that the belt was 1. grinding on the orange printed part and 2. skewing the x-axis).

I hope this helped, and good luck!

Mathieu

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Hi,

Make sure your belts aren’t overtightened. Try to aim for belt status between 240 and 280.

Next, please inspect your X and Y axis assembly. Perhaps there’s a loose wire, zip-tie or other part that’s interfering with the homing.

If you still have problems, then contact our tech support via live chat - we’ll do our best to help you.

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Mine finishes the self test right on top of the circle on the bed but when doing the xyz calibration if fails and ends up a bit off the circle just as the first picture above shows.

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Madison Mackenzie will be eternally grateful.
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