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Z Calibration Keeps Failing  

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GT6ixer
(@gt6ixer)
Active Member
Z Calibration Keeps Failing

Hello,

I am having an issue with my MK3 not calibrating the z-axis. When running the wizard or the Calibrate Z routine it runs all the way to the top until it hits the stops and grinds for a couple seconds and then says "Calibration Failed!". I am running the latest Firmware 3.8.0, however it started doing this before I upgraded from 3.1.0. Previous to this issue it has been running fine for over a year. Any help is much appreciated.

Nate L

Posted : 23/10/2019 7:23 am
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Z Calibration Keeps Failing

have you tried factory reset with data clear?

 

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 23/10/2019 8:18 am
cwbullet
(@cwbullet)
Member
RE: Z Calibration Keeps Failing

@joantabb

I would have like to have found this thread 5 days ago, you would have saved me hours on chat.  

--------------------
Chuck H
3D Printer Review Blog

Posted : 23/10/2019 10:47 am
GT6ixer
(@gt6ixer)
Active Member
Topic starter answered:
RE: Z Calibration Keeps Failing

@joantabb

I have not Joan. Thanks for the suggestion. I have tried the clear XYZ calibration option with no luck. How does one perform the factory reset?

Posted : 23/10/2019 4:49 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Z Calibration Keeps Failing

with the printer off, hold down the lcd selector knob, then turn the power on, keep the selector knob held down, and you should be oddered factory reset... 
then use the lcd knob to select the option that also clears stored data!

Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 23/10/2019 8:50 pm
Mr.Phreak
(@mr-phreak)
Eminent Member
RE: Z Calibration Keeps Failing

Recently had this issue, for me it was a broken wire in the PINDA probe. Seemed to be alright at the bottom of the axis, but lost connection at the top.

Posted : 23/10/2019 10:01 pm
GT6ixer
(@gt6ixer)
Active Member
Topic starter answered:
RE: Z Calibration Keeps Failing
Posted by: @joantabb

with the printer off, hold down the lcd selector knob, then turn the power on, keep the selector knob held down, and you should be oddered factory reset... 
then use the lcd knob to select the option that also clears stored data!

Joan

Thanks. I tried this but still no change. I think it may be a bad PINDA

Posted : 24/10/2019 2:25 am
GT6ixer
(@gt6ixer)
Active Member
Topic starter answered:
RE: Z Calibration Keeps Failing

@darryn-d

I think this is the issue. With the hot end raised about 100 mm above the heat bed the PINDA probe state is 1 instead of 0. Time to check the wiring.

Posted : 24/10/2019 2:26 am
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