ML1120 Plus/ML1190 Plus User’s Guide - Consumables and accessories > 8210. Replace the Top Cover.11. Set the Paper Thickness lever to match the paper being used.(See "Setting the Paper Thickness lever" on page 41.)12. Set the printer Power Switch to ON.Consumable order informationItem LIfe Order nO.Ribbon cartridge (Black) 4 million characters 43571806