Press the latch to open the stapler door.
Pull the latch of the staple cartridge holder down, and then pull the holder out of the printer.
Use the metal tab to lift the staple guard, and then remove any loose staples.
Press down on the staple guard until it snaps into place.
Push the cartridge holder firmly back into the stapler unit until the cartridge holder clicks into place.
Close the stapler door.
Press .