HP Color LaserJet 3800 Printer series - Manual (Page 127)

4. Grasp both sides of the print cartridge and distribute the toner by gently rocking the print cartridge
from side to side.
CAUTION Do not touch the shutter or the surface of the roller.
5. Remove the orange shipping locks and the shipping tape attached to the left shipping lock from
the new print cartridge. Discard the shipping tape and shipping locks according to local regulations.
6. Align the print cartridge with the tracks inside the printer, and using the handles, insert the print
cartridge until it is firmly seated.
ENWW Replacing supplies and parts 113