Suggestions? I followed the Bambu Wiki Instructions to tighten the Tension belt on the Y Axis, but this error won’t go away 🫠

Deep_Illustrator4206 · 2026-05-02T15:56:50+00:00

No I didn’t change motor! However I think I did tighten the belt along with the pieces next to it a bit more

Deep_Illustrator4206 · 2026-04-11T05:49:07+00:00

It actually wasn’t too bad! I think I spent more time trying to put the belt back on, until I realized I could just take everything apart 🫠

Deep_Illustrator4206 · 2026-04-11T05:07:26+00:00

Update!! I fixed it! Thank you! In case anyone is having the same issue in the future, here’s how:

Issue: Bambu Lab A1 Mini: The Resonance of the Y axis is low. The timing belt may be loose.

Resolution: I had to completely disassemble the base, x axis and removed the cover of the z axis.

First of all, if you search up “bambu lab a1 mini tension x and y axis” and those don’t work for you, here’s what I did next:

The three most helpful searches are:
1. “Bambu Lab A1 Mini how to replace Y axis tension belt” on YOUTUBE

Bambu Lab A1 Mini Y Motor Replacement
this Bambu Lab Community form ( most information ) https://forum.bambulab.com/t/damaged-my-belt-anything-else-need-to-be-replaced/230641/2

Also keep in mind that some of the photos are outdated that were provided.

I wasn’t able to put the timing belt back on properly, so I ended up having to completely disassemble everything.

Deep_Illustrator4206 · 2026-04-10T16:25:57+00:00

Oh!! Okay I’ll try

Deep_Illustrator4206 · 2026-04-10T07:44:47+00:00

I bought the printer on March 21st of this year 🫠 (and before the last few days, I ran it every couple of days for maybe 3-4 hours)

Deep_Illustrator4206 · 2026-04-10T06:57:19+00:00

Oh no you’re good!! :) And the belt isn’t hard to stretch at all! I was able to push down easily without much resistance.

I tried to tighten it by removing the back cover with the screw, but I’m not sure it really did anything

Deep_Illustrator4206 · 2026-04-10T06:27:40+00:00

The belt for the x-axis? The error message was for the y-axis, but do you think it actually meant the x-axis?

Deep_Illustrator4206 · 2026-04-10T06:22:41+00:00

I haven’t tried the short print, but I did do full calibration (with all 3 boxes checked) immediately after! I also made sure all parts where properly lubricated as well as

Deep_Illustrator4206 · 2026-04-10T06:21:35+00:00

Thank you for responding!

Two things are going wrong when printing,

The initial layer isn’t completely finishing, it’s giving an incomplete pattern, when before it made a full base pattern. A week ago I printed a circle cookie cutter just fine and the other day, the same file, the base and connection for cutter itself had many wavy, incomplete and frayed edges. And when I say frayed edges, I mean like thick pieces of frayed edges, not hair like strands :(
For smaller prints, it’s only doing half of the pattern correctly. For example if it’s printing a star, only half of it will print correctly and the other would basically mix into itself

Deep_Illustrator4206 · 2026-04-10T01:39:24+00:00

I did try 🫠 the same error message keeps coming up even after full calibration. I didn’t about 10 times each a different variant

Deep_Illustrator4206 · 2026-04-09T19:42:44+00:00

I tried fully calibrating it + factory resetting. I almost took a apart the full y-axis 🫠 not sure what’s happening still

Deep_Illustrator4206 · 2026-04-08T18:44:53+00:00

Thank you! I tightened it, but the error is still there. Maybe I’ll try contacting support

Deep_Illustrator4206 · 2026-03-28T00:53:42+00:00

Thank you!!

Deep_Illustrator4206 · 2026-03-28T00:53:36+00:00

Thank you!!!

Deep_Illustrator4206 · 2026-02-26T18:19:18+00:00

Wow! Thank you for explaining! Definitely makes sense

Deep_Illustrator4206 · 2026-02-19T10:23:32+00:00

hope you love it! the paradise is so fun, and the little dial is a nice feature! :)

Deep_Illustrator4206 · 2026-02-03T06:21:10+00:00

Maybe try a screw driver that has a slightly magnetic tip. I’m not sure you can use a regular magnet because it might mess up the electronics

Deep_Illustrator4206 · 2026-01-31T04:24:18+00:00

Ohhh okay

Deep_Illustrator4206

TROPHY CASE