misalignment of print layers

Dear All,

Last Friday, printing without any problems.
Saturday morning, new printing and it’s a disaster!
I printed 2 benchy to show you the type of problem I am having


I did a second print and it turns out that the errors are repetitive because they are placed in the same places. see pictures benchy 2 and 3.


I have reset all the printer settings but the problem remains.
Any ideas?
Thank you in advance for your help.

Hi everyone,
I finally solved my problem!
When I removed the printer bed to check the Y-axis belt, I noticed that the two screws holding the belt to the bed were completely loose.
Tighten the 2 screws using Loctite Threadlocker to ensure proper tightening over time!

A good reminder to perform routine checks of the printer for things that may have gummed up or undone.

Quality control problem!
They forgot to put 2 lock washers