Printronix L5020 - Manual (Page 112)

Chapter 4 Consumables Replacement
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8. Fit the notch to the pin on the developing unit. Push the new
toner cartridge as far as possible into the toner hopper.
9. Rotate the cartridge clockwise as far as it will turn.
Legend:
1) Toner Cartridge
10. If any toner has spilled, remove it with wet tissue paper or a
toner vacuum.
11. Close the upper doors.
1