XYZ calibration, Bed calibration point was not found  

Re: XYZ calibration, Bed calibration point was not found

the photo it's in this web page about XYZ calibration error
https://help.prusa3d.com/l/en/article/fja7hbb22y-xyz-calibration-error-messages-mk-3

RE: XYZ calibration, Bed calibration point was not found

Hey Dominique, I have the same problem here.

PINDA not stop in the center of the 1st calibration point when i use Calibration Auto-home.

And I don't know how to solve it. 🙁 

RE: XYZ calibration, Bed calibration point was not found

Usually PINDA height or a sticky axis.  If you didn't grease the bearings before you installed them, try adding a few drops of oil to the rods and work the axis back and forth to get the oil into the bearings.  Make sure the PINDA is between 0.8 and 1.2 mm above the nozzle tip.  

RE: XYZ calibration, Bed calibration point was not found

I needed to better align the x axis as it had left the screws loosely tightened.

But after the tips of this posts worked for me.

https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-assembly-and-first-prints-troubleshooting/pinda-is-out-of-align-and-z-calibration-issue/#post-159789

RE: XYZ calibration, Bed calibration point was not found

Hi, I have tried all of the above, I've updated the firmware, I've tested the PINDA, I've adjusted the PINDA, full reset. 

Every time I try to do the calibration it continues to fail - bad calibration point was not found...

I am at a loss...

Any further suggestions will be gratefully received....

RE: XYZ calibration, Bed calibration point was not found

@at24_3dnow

I'm having the exact same problem. Completely dumbfounded... 

RE: XYZ calibration, Bed calibration point was not found

Hi,

Yesterday I had the same problem, went through numerous checks from this post and the support personnel at PRUSA finally I found the error. If all tests fail to identify the problem then the most ludicrous becomes the solution. I had a spare PINDA probe in my spares box and reluctantly replaced the installed one. IT WORKED! This after following the posts here and following an upgrade of the extruder using the 3S+ plastic, which by the way has corrected the MMU3s feed probñems. The IR lever and feed path has been greatly improved by the Prusa team. Kudos, right off there are no feed problems. Up to now 100% feed with no failures.

I hope that this helps somebody.

RE: XYZ calibration, Bed calibration point was not found

RE: XYZ calibration, Bed calibration point was not found

Please confirm which  Prusa I3 Mk3 printer version you have (i.e. a MK3, a MK3S, or a MK3s+). 

If your kit was shipped after October 2020 then it is likely to be a MK3S+ kit with a SuperPINDA provided instead of the original PINDA probe.  As such your printer requires a firmware level of 3.9.2 or higher for a Prusa I3 MK3S/MK3S+ that is available from the downloads webpage ( https://www.prusa3d.com/drivers/ ).

Also check that your X and Y axis GT2-16 pulleys have been correctly tightened down on to the flat parts of the relevant stepper motor D shafts. one grub screw should be screwed down perpendicular to the flat part of the D shaft before the second grub screw is screwed on to the cylindrical part of the shaft.  The screw on the flat part prevents the GT2-16 pulley from slipping on the shaft as the stepper motor rotates it. 

See:

1. step 28 (with final adjustment and tightening in step 35) for the y axis ( https://help.prusa3d.com/en/guide/2-y-axis-assembly_165795#177222)
2. step 10 for the X axis ( https://help.prusa3d.com/en/guide/3-x-axis-assembly_167854#168312)   with it's final adjustment and tightening in step 51 for the E axis assembly  ( https://help.prusa3d.com/en/guide/5-e-axis-assembly_169235#171666)

During calibration/autohoming your extruder carriage on the x axis should move to the left and bump into the left side twice before moving the Heated bed (on the y axis) backwards and bumping into the rear twice. This is when you're looking at your Mk3/S/S+ from the front side.  If the movement of an axis is reversed then you have the relevant stepper motor plugged into the Einsy board with its connections reversed.  Having reversed X or Y axis motor movement can cause auto calibration issues.

RE: XYZ calibration, Bed calibration point was not found

@jplau001

I originally posted this on a thread called "XYZ first calibration point not found. Frustrating." on 2/15/21.

Hello,

Since November, I wasn't able to use my Original Prusa i3 MK3S printer (w/o the Multi-Material Upgrade) because of the technical issues regarding the XYZ and bed calibration.

1) I did all the suggestions from the forums regarding calibration of XYZ and the HeatBed and nothing works.

2) I lubricated all the bearings with sticky lubricant and the z-rods with regular lubricant.

3) I checked the P.I.N.D.A sensor in multiple positions and it works fine.

4) The self-check was successful.

5) The auto home runs successfully. 

6) I checked that the firmware of the Original Prusa i3 MK3S printer that we bought is 3.9.2-3594.

Yet still, the XYZ calibration fails before the detection of the 1st-bed calibration point.

Please advise. Thank you.

RE: XYZ calibration, Bed calibration point was not found

@3dprinterguy9134

I was having some similar problems after installing the MK3S upgrade, and it turned out I made two mistakes:

1: Incorrect zip tie positioning on the wire bundle on the back of the extruder assembly.  Both the top bundle of wire and the bottom had zip ties ends which were hitting the Einsy case, and they must not hit either the Einsy case or the power supply for the printer to correctly find its calibration points.

2: My Y axis belt was too tight (despite the fact the belt check reported that I was well within the correct range) and sticking a bit (polymer bearings needed a little oil to run smoothly). If the belt check comes up with values near the low end of the allowable range (240-300), loosen the belt a little.

Honestly, I had some weird problems running calibration in 3.9.3.  Usually I'd fail on the first calibration point, sometimes I'd get to the third, and the output to pronterface seem to show the calibration point in the bitmap (although quite weakly) when it fails, but a good strong signal when it succeeds.

RE: XYZ calibration, Bed calibration point was not found

Today I fixed a few things, namely loud Z axis and calibration failed to find point 2 and then point 1... Ok,  what did I do between point 1 and 2 of first run? Yeah, fixed the paper with magnets, so I dont have to baby sit all the time. I took magnets away and calibration went fine. So even slight (magnets are tiny and between the corners) magnetic field change completely kills the calibration proces. Maybe look for lost fixation magnet under the bed 🙂

RE: XYZ calibration, Bed calibration point was not found

In my case it was incorrect zip tie assembly preventing the extruder from going all the way to the left on X axis.