![](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 waste toner transfer unit.
Note: To avoid spilling the toner, place the unit in an upright position.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the printhead wiper, and then clean the printhead lenses.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Put the printhead wiper back into place.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the waste toner transfer unit until it clicks into place, and then lock it.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the used waste toner bottle.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Unpack the new waste toner bottle.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the new waste toner bottle until it clicks into place, and then close the door.