Samsung M262x Benutzerhandbuch (en)

3. Maintenance
Replacing the toner cartridge
Before opening the front cover, close the output support first.
Do not use sharp objects such as a knife or scissors to open the toner cartridge package. They might scratch the drum of the cartridge.
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.
Shake the toner cartridge thoroughly, it will increase the initial print quality.
Do not touch the green underside of the toner cartridge. Use the handle on the cartridge to avoid touching this area. 
When a toner cartridge has reached the end of life, the machine will stop printing.