Dell B5465dnf Mono Laser Printer MFP - Manual (Page 238)

3 Unpack the new toner cartridge, then remove the packing material, and then shake the cartridge to redistribute
the toner.
4 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.
Note: Make sure the cartridge is fully pushed in.
Warning—Potential Damage: When replacing a toner cartridge, do not leave the imaging unit exposed to direct
light for an extended period of time. Extended exposure to light may cause print quality problems.
Maintaining the printer 238