The Paper Size setting is determined by the position of the paper guides in the tray for all trays except the multipurpose feeder. The Paper Size setting for the multipurpose feeder must be set manually. The factory default Paper Type setting is Plain Paper. The Paper Type setting must be set manually for all trays that do not contain plain paper.
Make sure the printer is on andappears.
On the home screen, touch .
Touch Paper Menu.
Touch Paper Size/Type.
Touch the arrows for the desired tray until the correct size or type setting appears.
Touch to return to the home screen.