Xerox DocuPrint C621, User Manual, Page: 150 / 200

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6.1 Replacing the Toner Cartridges
Shake the toner cartridge seven to eight times
as shown in the diagram to distribute the toner
evenly.
Align the toner cartridge so that the arrow is as
shown in the diagram. Then insert and push the
cartridge firmly into the printer.
Align the " " mark on the cartridge by turning
the toner cartridge in the direction of the arrow
until it points to the "lock" position ( ) on the
printer.
Toner may spill if the toner
cartridge is not rotated
completely.
Close the front cover.
After the replacement, place the used toner
cartridge into the empty packaging box. Then,
paste the return seal bundled with the toner
cartridge on the packaging box, and mail it out.
Never throw used toner
cartridges into an open
flame. It can cause an
explosion and you can
get burnt.