Samsung CLX-8540ND - Manual (Page 114)

13 .5
3 Open the front cover.
4 Pull the corresponding toner cartridge out from the machine.
5 Remove the new toner cartridge from its bag.
6 Thoroughly roll the new cartridge five or six times to distribute the
toner evenly inside the cartridge.
Note
If toner gets on your clothing, wipe it off with a dry cloth and
wash clothing in cold water. Hot water sets toner into fabric.
7 Hold the new toner cartridge by the handle and slide the new toner
cartridge in until it locks in place.
8 Close the front cover, then the side cover.
9 Make sure that the cover is securely latched and then turn the
machine on.
Caution
If the cover is not completely closed, the machine will not
operate.