Samsung MSYS SF-6800 - Manual (Page 14)

1.6 Setting up your machine
3. Unpack the toner cartridge. Grip the cartridge firmly and pull the sealing
tape slowly from the cartridge. You may feel some initial resistance.
As the tape will have a small amount of toner on both sides, take care
not to get toner on your clothes.
Remove the green cap from the right side of the cartridge.
5. Find the cartridge slots inside the machine, one on each side.
4. Gently shake the cartridge from side to side 5 or 6 times to distribute the
toner evenly inside the cartridge.
Green cap