MK4 Keeps homing the x-axis after y-axis check failed
What happens often to me is that at the beginning of a print, the printer tries to home the x-axis, fails, says that a crash is detected, and checks both axes.
Upon the check, the printer indicates that the x-axis is ok, the y-axis is bad, and starts hammering the printhead against the left side of the x-axis... Does it switch up the axis statuses, or is there a but when it tries to home x if it fails to home y?
P.S. Usually, when I reset-reboot it and start homing from the menu or just restart the print, everything is fine
RE: MK4 Keeps homing the x-axis after y-axis check failed
I have the exact same issue, have you found a solution?
RE: MK4 Keeps homing the x-axis after y-axis check failed
Does it also happen without filament loaded ?
On mine, i realized, that if the filament puts a slight strain on the extruder while its moving sideways it takes longer to calibrate ,or sometimes gives you an error.
Same, if the PTFE Tube somehow causing some strain. (i print with or without the PTFE tube)
RE: MK4 Keeps homing the x-axis after y-axis check failed
Im also having this issue
RE: MK4 Keeps homing the x-axis after y-axis check failed
I had similar issues until I tried the 5.1.0 Alpha 2 firmware. I get two bumps each X and Y and printing she goes. I have not had any other odd issues with the update.
RE: MK4 Keeps homing the x-axis after y-axis check failed
Any fixes or ideas this is driving me crazy and is taking one of my printers offline all the time and putting me behind on orders
RE: MK4 Keeps homing the x-axis after y-axis check failed
I have the same problem, both on 5.0.0 and 5.0.1. Green check on X and red cross on Y axis followed by repeated bashing of carriage against X home position. Sometimes it will recover and sometimes it will report a crash and only offer to restart the process. I tightened the X belt a bit and then it reported green check marks on both X and Y axis but otherwise followed the same procedure. Yesterday I randomly selected Auto Home in the menu after being through this cycle a couple of times with no improvement, and then it nicely homed all axis and let me start the print normally.
RE: MK4 Keeps homing the x-axis after y-axis check failed
i have the same issue since i updated to Firmware 5.0.1. before, everythig was ok, so it looks like this has something to do with the Firmware update.
RE: MK4 Keeps homing the x-axis after y-axis check failed
tried the auto home tried the check xyz axis under diagnostics menu and nothing helps but it seems to happen more with prints started with prusa connect
RE: MK4 Keeps homing the x-axis after y-axis check failed
I've encountered this twice now with FIRMWARE 5.1.2.
RE: MK4 Keeps homing the x-axis after y-axis check failed
Firmware 5.1.2 MK4
Also encountered this issue. tried a couple times, reset, same result. Was printing from Prusa Link. Shows crash detected with x and y with green checks, banging on left side. No visible obstructions, tube not strained.
I then printed from control panel and print started
RE: MK4 Keeps homing the x-axis after y-axis check failed
5.1.2 MK4 (ObXidian 0.4)
In the past three days, nearly every print has begun with a homing of the X-Axis, where it crashes over and over into the left side, then accepts the new value and prints like normal. Does not matter if the print is started with the control panel or with PrusaConnect.
I have been on the latest firmware for some time now, and am not sure why this would start now. It happened with the end of a roll of filament and now with a fresh roll as well, mounted on the stand sent with the machine.
I'm very close to trying a factory reset, or just going through the full calibration wizard... I already tried just calibrating X & Y under the control menu.
RE: MK4 Keeps homing the x-axis after y-axis check failed
I don't know how it resolved itself, but I did an XY calibration a few times then a FULL calibration. No bashing since!
RE: MK4 Keeps homing the x-axis after y-axis check failed
Same here. Before every print it detects crash and starts bashing, but after bashing ends it will allways start printing. No error or canceled print.
It begins after 5.0.0 firmware update.
4+ years experience with Prusa printers,20+ Printers in company, Mk3, Mk4, XL, SL1S
RE: MK4 Keeps homing the x-axis after y-axis check failed
Update, it detects force from filament and thinks it is crash. I have own filament holders with cheap bearings, need to change them for smoother rooling.
4+ years experience with Prusa printers,20+ Printers in company, Mk3, Mk4, XL, SL1S
RE:
Also check if the screw that holds the fan door is firmly tightened as if the door is too loose it surely has an impact:
See also https://help.prusa3d.com/article/selftest-failed-mk4_417808#troubleshooting below "X/Y Axes"
RE: MK4 Keeps homing the x-axis after y-axis check failed
Hi everyone,
I have exatly the same problem on my brand new MK4 (Firmware 6.0.1+14848).
Two of your advices helped me solving it (for the moment...):
- Fully tightening of fan door screw
- avoiding tension on the extruder/x-axis via the filament
Now it's working properly. Thanks to all! 😍
RE: MK4 Keeps homing the x-axis after y-axis check failed
For me it was the extruder main cable hitting the electronics box and causing too much resistance randomly. This got the X-Axis homing confused and made it automatically restart the printer sometimes.
This is caused by me putting the nylong-guide-filament in the wrong way, and it bending the part closest to the electronics box against it.
Also just for good measure, i let the little endstop screw next to the X-Axis motor stick out a bit further.