Lexmark MX310dn User Manual page 163

Maintaining the printer
4
Shake the new cartridge to redistribute the toner.
5
Insert the toner cartridge into the printer by aligning the side rails of the cartridge with the arrows on the side rails
inside the printer.
Warning—Potential Damage: Do not expose the imaging unit to direct light for more than 10 minutes.
Extended exposure to light may cause print quality problems.
6
Close the front door.
163