QMS Magicolor WX User Manual page 132

2 Remove the old toner cartridge.
Hold it across the center, squeezing the sides to loosen the pins
on the back side from the developer cartridge notches. Then, lift
the toner cartridge straight up and out of the printer.
Dispose of it according to laws in your area.
3 Remove the new toner cartridge from its protective bag.
4 Hold the toner cartridge as shown and shake it horizontally.
This distributes toner evenly inside the cartridge and helps assure
quality printing.