Oki PRINTER MPS420B - Manual (Page 49)

Consumables and Maintenance > 49
7. Gently shake the cartridge (3) from end to end several times to loosen and
distribute the toner evenly inside the cartridge.
8. Remove the wrapping material and peel off the adhesive tape from the underside
of the cartridge (4).
9. Holding the cartridge by its top center with the colored lever to the right (5),
lower it into the printer over the image drum unit from which the old cartridge
was removed.
10. Insert the left end of the cartridge into the image drum unit first. Align it under
the tabs (6), and push it against the shiny pins in the drum unit. Then lower the
right end of the cartridge down into the image drum unit (7).
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