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4 Unpack the new imaging unit, and then shake it.
5 Remove all packing material from the imaging unit.
Warning—Potential Damage: Do not expose the imaging unit to direct light for more than 10 minutes.
Extended exposure to light may cause print quality problems.
Warning—Potential Damage: Do not touch the photoconductor drum. Doing so may affect the print quality of
future print jobs.
6 Insert the imaging unit into the printer by aligning the arrows on the side rails of the imaging unit with the arrows
on the side rails inside the printer.
Maintaining the printer 251