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Self test error axis length y after storage  

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Jens.Thomsen
(@jens-thomsen)
Member
Self test error axis length y after storage

Dear everyone 

During a move and house-renovation, I've had my i3 mks3+ printer (bought pre-assembled) on the attic for storage.

When I took her out of storage today, she failed the self-test with an error on Y-axis length, which has never been an issue before.

How should I troubleshoot it? There doesn't seem to be anything blocking the hotbed movement and it moves smoothly enough manually. I've tried lubricating the linear rods with no effect.

Any ideas?

Posted : 02/04/2025 2:19 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Self test error axis length y after storage

try laying one of the Prusa cable ties across the left hand smooth rod, between the mounting block and where the Y axis  bearings run, 
this effectively shortens the travel of the Y platform, now try the printer again
some people find this resolved the issue that you are seeing. 
If this works, try loosening the screws fixing the left hand bearings in place, and try moving the bearings away from each other, then re tightening the bearing fixings

regards 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 : 02/04/2025 6:14 pm
Jens.Thomsen
(@jens-thomsen)
Member
Topic starter answered:
RE: Self test error axis length y after storage

Thank you for the reply! Your comment made me look more closely at the cables and I realized the small cable leading to the hotbed was snagging the frame, causing the error. After re-positionong of that cable, it cleared the belt-test, no trouble. 

Posted : 02/04/2025 6:36 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: Self test error axis length y after storage

Well done

regards 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 : 03/04/2025 5:28 pm
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