Brother HL-2600CN Series User Manual page 119

After rocking each new Toner Cartridge 3 to 4 times from side to side,
4.
remove the tape labeled 'REMOVE' and the orange protective cover from
the new Toner Cartridge.
Insert the new Toner Cartridge(s) by positioning it in the correct guide(s).
5.
Slide it gently into the printer. Do not try to lock or push the new Toner
Cartridge(s) in; the new Toner Cartridge(s) must rest loosely in the guide
rails, they will be correctly positioned when the front cover is closed. Note
that each color cartridge is individually keyed to prevent improper
installation. Match each cartridge color label to the corresponding label on
the printer.
Close the Front Cover.
6.
Fig. 5-2
Fig. 5-3
5-7
CHAPTER 5 MAINTENANCE
K K
Y Y
M M
C C