Dell B3460dn Mono Laser Printer - Manual (Page 96)

2 Pull the toner cartridge out using the handle.
3 Lift the blue handle, and then pull the imaging unit out of the printer.
4 Unpack the new imaging unit, and then shake it.
5 Remove all packing materials from the imaging unit.
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.
Maintaining the printer 96