Printer Can’t Read The Usb Drive; Loose X- And/Or Y-Axis Belts; Filament Stuck In The Ptfe Tube; X-Axis Homing Fails - Josef prusa PRUSA RESEARCH MINI User Manual

11.2 Printer can't read the USB drive
If the printer can't read the USB drive, first try restarting the printer. In case you see an error say
"Error mounting USB drive", your USB drive probably has an incompatible filesystem (e.g. exFAT).
There are two common situations after inserting the USB drive:
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The Print menu is inaccessible after inserting a USB drive
•
First, restart the device
•
Use a USB drive with a single partition and FAT32 file system
•
Try a different USB drive
•
If you tried various USB drives and they are still not recognized, your motherboard might be
defective. Contact our tech support.
•
The USB drive is recognized, but no files are shown in the list
•
Make sure you're using a compatible G-code
•
Make sure the file was written onto the drive fully and correctly (use the safe remove function
in Windows before you remove the USB drive)
•
Try a different flash drive and G-code file
•
Try renaming the file to something simple, e.g. print.gcode

11.3 Loose X- and/or Y-axis belts

Check if both belts are properly tightened, loose belts would cause a printer malfunction and prevent
proper printing. The easiest way to check is printing a round object - if any of the belts are not
tightened properly the result is an irregular shape instead of a perfect circle. Y-axis belt is located
under the heatbed, X-axis belt moves the print head.

11.4 Filament stuck in the PTFE tube

If a filament strand gets stuck anywhere in the printer, it's generally very easy to remove it. Follow
the steps described in the Clogged / jammed extruder chapter - disconnect the main PTFE tube
and inspect where the filament got stuck and proceed accordingly.

11.5 X-Axis homing fails

This is most likely caused by the cables leading from the print head to the extruder getting in the
way. When the print head is about to hit the right side of the printer (the Z-axis tower), pay close
attention whether there are no cables blocking the way.
11.6 Heating errors
If your printer stops with a red screen and error related to heating, please check the wiring of the
heaters and thermistors. See
11.7 Fan errors
If your printer stops operating and displays an error related to fans, please check the wiring of both
print head fans (hotend fan and print fan). See
manual.prusa3d.com
manual.prusa3d.com
for more details.
for more details.
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