Dell C2665dnf Color Laser Printer - Manual (Page 476)

3 Insert the drum cartridge into the associated cartridge slot, and then push until it stops.
4 Repeat the steps 1 to 3 to insert the other three cartridges.
5 Remove the cleaning rod from inside the printer.
6 Remove the cleaning pad by pressing the white tabs between your thumb and index finger.
7 Unpack a new cleaning pad.
Maintaining Your Printer 474