Y axis moves slightly with X axis movements Oo'  

RE: Y axis moves slightly with X axis movements Oo'

here is the video:

https://forum.prusa3d.com/wp-content/uploads/2019/06/prusa_bug.mp4

RE: Y axis moves slightly with X axis movements Oo'

If you are only adjusting X, but Y is also moving, my initial guess is it's probably a power supply issue.  X motor is stalling and dropping Vcc enough Y is losing it's hold current. 

Though the last few seconds it sounds more like the belt is hopping over the drive gear.

RE: Y axis moves slightly with X axis movements Oo'

Thanks!

The last few seconds, it just happen that the bed is at the end of Y position. So it is blocked.

But I am only moving in X wehn this happened anyway... 🙁

How can I be sure the power supply is the issue? Is there any tests I can do?

RE: Y axis moves slightly with X axis movements Oo'

A voltmeter, a DMM with clip cables and min-max readings so your hands are free to play with the movement controls, measure the power rails at the control board while this is happening.  If you see the rails droop 20% or more it's probably the power supply or cables.  Cables have been known to have bad crimps - as have the screw terminals they connect to at both ends.

If the power supply, I'd expect you to have issues with holding bed and nozzle temps, too.

If could also be a failing fuse (5A motor fuse), or something on the control board failing.  Hard to say without actually having the thing to test. 

RE: Y axis moves slightly with X axis movements Oo'

I agree, It hold the temp fine, for both bed and nozzle. 

I have been doing a bunch of test with the guys on the discord. Swapping motors doesn't change the issue. 

Why would it be the power supply over the Rambo board? 

Could it be an issue with the calibration compensation? (Is there a way I can turn off mesh bed calibration?)

RE: Y axis moves slightly with X axis movements Oo'

I have figured something out!!
I did a Printer full reset. and skipped the wizard, then I moved the head in X, and it works! I did several tests,  moving Y in different positions and X as well. 

I dont get the same cliky sound. 
If I separatly Home XYZ, it still works fine. but then, If I home, the printer automatically does the mesh bed leveling and the issue come back!.

Any idea why?

RE: Y axis moves slightly with X axis movements Oo'

Odd that it even works after a RESET with DATA CLEAR.  Not sure how you bypassed the wizard, but taking your own path to calibrating X and Y multiplies and offsets may have been what got the printer into this condition in the first place.  I can only recommend you start with a new RESET with DATA CLEAR and follow the manual for setup.

RE: Y axis moves slightly with X axis movements Oo'

What firmware are you running and have you tried reflashing the firmware just in case it got corrupted? I also tend not to use the wizard and use the independent calibration options, though I do follow the sequence shown in the manual.

Unless the firmware is corrupted, then bed level mapping should have zero effect on positioning moves.

RE: Y axis moves slightly with X axis movements Oo'

Hey! thanks for the answers!

So... I did another reset, then XYZ calibration, then a rough Live Z... but it is not easy with that issue. 
Here is my status:
I am able to do full moves with PronterFace, I also stripped Prusa Calibration Gcode and run it via Pronterface, and it works ( except that Z level is too high).

It seems that I have narrowed down the issue to Z homing/homing, If I home X and Y, I can still move X without issues. 
As soon as I Home Z or all, even without mesh bed leveling, Moving X will result in the clicking of Y... as previously. 

I dont know what to try then... @billcampbell, I will reflash an let you know if I see any error. thanks!

RE: Y axis moves slightly with X axis movements Oo'

so the reflash did not do much but I have noticed that it gave that error:

avrdude-slic3r: stk500v2_command(): command failed

is it normal?

RE: Y axis moves slightly with X axis movements Oo'

Try doing the firmware upload from inside PrusaSlicer, it's more reliable as there are too many Arduino version incompatibilities.

Configuration | Flash printer firmware.

RE: Y axis moves slightly with X axis movements Oo'

I am using PrusaSlicer to do the firmware update already 🙁 
this is the only error I could find in the console log. 

I have a correction to bring, after booting the printer , and not homing, the  linear movements are fine. If I home Z, it actually home XYZ. 
but if I only home Y, ( and to do so, the printer extend Y to the out bound and retract a bit. ) I find that from that point Moving Y will slightly moves X and moving X will slightly move Y.
I am starting to wonder, does the MK2 have the exact same specs as the MK2S? as the firmware could be slightly wrong?

Is there a way to start a print directly on the printer without mesh bed leveling and auto homing ?

RE: Y axis moves slightly with X axis movements Oo'

What version of firmware are you flashing? Does your MK2 have the 1.0 version of the Rambo or the 1.3 and have you matched that with either 10a or 13a in the firmware filename? When you go to support on the LCD what firmware version shows?

Until you can home the printer has no way of printing in the correct place. Without mesh bed levelling your first layer is unlikely to stick.

RE: Y axis moves slightly with X axis movements Oo'

Yes! I have the 1.3a and this is what's written in the LCD. 
Is it possible to Downgrade firmware? I might try to go back a couples of versions, just in case.

I have noticed that, when the printer hit the Y endstop, its doesnt move back I can then move over the endstop a littlebit if I keep pressing the Y move button. 
What i mean is that when the printer hit the X endstop it clicks and then moves a tiny bit back, but not on the Y. is it normal? 

RE: Y axis moves slightly with X axis movements Oo'

You still have not said what version you are on. If it's not 3.2.3 I would recommend you update to that version and then use the LCD calibration menu to go through the calibration steps in the order shown in the Printing Handbook section 6.

RE: Y axis moves slightly with X axis movements Oo'

Ha sorry, it is  3.2.3. and i did the calibration in the order of the handbook.
the printer is slightly skewed (0.15), and all the tests passed correctly except Z adjust, as I cant get the head to move properly. 

RE: Y axis moves slightly with X axis movements Oo'

How are you moving the head? LCD screen - Settings | Move Axis?

RE: Y axis moves slightly with X axis movements Oo'

I am using Pronterface, Using the LCD screen, the acceleration is too fast to ear the issue. 
I can use the lcd but I to do so, I need to get the printer to reduce acceleration to 2 or 3 using gcode.
It then does the same thing, bu its not very efficient to do tests. 
 

RE: Y axis moves slightly with X axis movements Oo'

I am using Pronterface, 

Interesting - does it happen when printing from the SD card?

Also - post up the custom gcode you use to slow the printer down.