![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Open the front door.
![](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 waste toner bottle.
Note: To avoid spilling the toner, place the bottle in an upright position.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the 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.
Note: Place the imaging kit on a clean, flat surface and in an upright position to avoid scratching or damaging the photoconductor drum.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Unlock the used black imaging unit.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the used black imaging unit.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Unpack the new black imaging unit.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the new black imaging unit.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Lock the new black imaging unit in place.
![](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 waste toner bottle until it clicks into place.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Gently pull out the printhead wipers, and then clean the printhead lenses.
For more information on cleaning the printhead lenses, see Cleaning the printhead lenses.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the toner cartridges.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Close the door.