Lexmark MX931
Turn off the printer.
Slide the tray to the left.
Open door J, and then open the roller kit cover.
Locate, and then remove the tray roller kit.
Apply water to a soft, lint-free cloth, and then wipe the roller kit.
Insert the roller kit.
Close the roller kit cover, and then close door J.
Slide the tray back into place.
Turn on the printer.
Clean the tray roller kit regularly to prevent paper feed problems from happening.
Change the roller kit for the 2000‑sheet tray regularly to prevent jams and other paper feed problems.