Dell 1250c Color Laser Printer - Manual (Page 122)

120 Maintaining Your Printer
CAUTION: Always pull the cartridge out slowly so that you do not spill any toner.
Installing a Toner Cartridge
1 Unpack a new toner cartridge of the desired color and shake it five to six
times to distribute the toner evenly.
NOTE: Ensure that the color of the new toner cartridge matches that on the
handle before replacing it.
NOTE: Handle the toner cartridge carefully to avoid spillage of the toner.
2 Remove the tape from the toner cartridge.