Oki MC573dn User Manual page 161

8
Shake the cartridge several times vertically and horizontally.
9
Remove the tape (e) from the toner cartridge.
10
Insert a new toner cartridge (d) by aligning its left side indentation (f) with the
protrusion (g) on the image drum so the toner cartridge and image drum color
labels align. Then insert the right side gently into place.
Do not insert a toner cartridge without removing the tape.
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8. Maintenance