Xerox Document WorkCentre 450C User Manual page 46

Note If you are changing from color to black-and-
white printing, place the color print head in the print
head storage box. This prevents the ink from drying
out and clogging the ink jets.
5. If you are installing a new cartridge, remove the ink jet
cartridge from the box, peel back the foil cover, and lift
out the cartridge. Remove the green nozzle protector
tab and the tape from the cartridge.
6. With the green carriage lock lever still in the forward
position, install the cartridge by aligning the hole in the
cartridge with the green post on the printer carriage.
Gently lower the cartridge into position.
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