![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Open door B.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Open door A.
CAUTION—HOT SURFACE: The inside of the printer might be hot. To reduce the risk of injury from a hot component, allow the surface to cool before touching it.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the right cover.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the waste toner bottle.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the toner cartridges.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the imaging kit.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the used developer unit.
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.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the packing material.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the new developer unit.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the imaging kit until it is fully seated.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the toner cartridges until they click into place.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the waste toner bottle until it clicks into place.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Attach the right cover until it clicks into place.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Close door A, and then close door B.