Printronix L5535 Operator's Manual page 53

2. Rotate the old toner cartridge counterclockwise until the notch
is aligned with the pin in the toner hopper, and remove the
cartridge.
1
Legend:
1) Notch
2) Toner Cartridge
3) Positioning Pin
3. Put the old cartridge into a plastic bag and discard it.
Replacing The Toner Cartridge
2
3
53