Dell B3465dnf Mono Laser Multifunction Printer - Manual (Page 214)

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.
Replacing the imaging unit
1 Press the button on the right side of the printer, and then open the front door.
2
1
2 Pull the toner cartridge out using the handle.
Maintaining the printer 214