Lexmark CX421 User Manual page 168

Maintaining the printer 168
8
Remove the packing material.
Note: If you are replacing the black imaging kit, then insert the magenta, cyan, and yellow developer
units into the new imaging kit.
Warning—Potential Damage: Do not expose the imaging kit to direct light. Extended exposure to light
may cause print quality problems.
Warning—Potential Damage: Do not touch the photoconductor drum. Doing so may affect the quality of
future print jobs.