Calibration Failed!  

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Daniel
(@daniel-24)
New Member

In the first photo when use Auto Home.

Auto Home 

 

In this photo when use Calibrate xyz.

[caption id="attachment_65200" align="alignnone" width="600"]Calibrate xyz Calibrate xyz[/caption]

 

Photo of errors....

 

 

Where it is wrong ?

 

thanks

 

Prusa I# MK2.5S

Posted : 06/01/2021 11:19 pm
avh
 avh
(@avh)
Eminent Member

Putting on the steel sheet might help - the sensor is inductive so I'm not sure if it will detect just the heatbed.

Posted : 07/01/2021 7:27 pm
Daniel
(@daniel-24)
New Member

Check the sensor and it works well, for the xyz calibration, ask that the steel sheet not be present.

 

Any idea?

Posted : 07/01/2021 9:30 pm
Chicago Keri
(@chicago-keri)
Trusted Member

Question:

How many calibration points pass before the fail occurs?

From the picture, I think it is probably failing on the first point.

When it says "check axes" , this usually means that the printer can't find all of the sensor points, or it does find them and one or more are too far away from the expected position.   

I find that on my Mk2.5S, the upright frame has to be slightly nearer the Front of the printer or it will fail the calibration.  By slightly, I mean about 1/2 turn of the mounting nuts from the recommended assembly position.  

It is also important to have the upright frame "square" to the bed, which is adjusted by moving the mounting nuts on one side only.  The bed has a convenient grid printed on it, so it is easy to check. Just move the bed  so that one of the lines aligns with the vertical frame. The line should line up with the upright frame on both sides. If not, adjust just one side of the vertical frame fore or aft.

 

Good luck!

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Posted : 16/01/2021 12:12 am
Daniel
(@daniel-24)
New Member
Posted by: @chicago-keri

Question:

How many calibration points pass before the fail occurs?

Yes is in the first point when calibrate, but when use auto home its work fine

 

From the picture, I think it is probably failing on the first point.

When it says "check axes" , this usually means that the printer can't find all of the sensor points, or it does find them and one or more are too far away from the expected position.   

I find that on my Mk2.5S, the upright frame has to be slightly nearer the Front of the printer or it will fail the calibration.  By slightly, I mean about 1/2 turn of the mounting nuts from the recommended assembly position.  

How distance its aprox.

It is also important to have the upright frame "square" to the bed, which is adjusted by moving the mounting nuts on one side only.  The bed has a convenient grid printed on it, so it is easy to check. Just move the bed  so that one of the lines aligns with the vertical frame. The line should line up with the upright frame on both sides. If not, adjust just one side of the vertical frame fore or aft.

 

Good luck!

Thanks

Posted : 22/01/2021 10:44 pm
KevinMM
(@kevinmm)
New Member

If your nozzle spiked into the bed, your PINDA is too high. I believe the manual says use a zip tie under the PINDA as your reference. It's very possible your bed isn't very level. That may be enough to miss a calibration point. Put a light behind the printer, turn all the other lights off, and run a ruler down the bed. See if you see any light coming from underneath the ruler when you do.

Lower the PINDA. You're not going to cause harm if it is too low. If that gets you past calibration, then worry about raising it back up.

Check your trapezoid nuts and make sure they aren't upside down. It may have been factory built, but it doesn't mean they weren't taken off at some point.

 

Kev 

This post was modified 3 months ago by JoanTabb
Posted : 01/04/2021 8:51 pm
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