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5 Insert the toner cartridge into the printer by aligning the side rails of the cartridge with the arrows on the side rails
inside the printer.
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.
6 Close the front door.
Replacing the imaging unit
1 Press the button on the right side of the printer, and then open the front door.
Maintaining the printer 157