Dell 3333/3335dn Mono Laser Printer - Manual (Page 231)

To replace the toner cartridge:
1 Open the front door by pressing the button on the left side of the printer and lowering the door.
2 Press the button on the base of the photoconductor kit. Pull the toner cartridge up and out using the handle.
3 Unpack the new toner cartridge.
Warning—Potential Damage: When replacing a toner cartridge, do not leave the photoconductor kit exposed to
direct light for an extended period of time. Extended light exposure can cause print quality problems.
4 Rotate the cartridge in all directions to distribute the toner.
Maintaining the printer 231