![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Open the front door.
Warning—Potential Damage: To prevent damage from electrostatic discharge, touch any exposed metal frame of the printer before accessing or touching interior areas of the printer.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the used imaging unit.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Twist the blue latch, and then remove the toner cartridge from the used imaging unit.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Unpack the new imaging unit, and then insert the toner cartridge until it clicks into place.
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 quality of future print jobs.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the new imaging unit.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Close the door.