Step 1 ![](https://publications.lexmark.com/media/ids_assets/images/transparent.png) Using the Maintenance Defect Ruler, measure the distance between the repeating defects on the affected color page. ![](https://publications.lexmark.com/media/ids_assets/images/transparent.png) Replace the supply item that matches the measurement on the affected color page. Imaging kit - 94.5
mm (3.72
in.)
- 29.9
mm (1.18
in.)
- 23.2
mm (0.91
in.)
Developer unit - 43.6
mm (1.72
in.)
- 45
mm (1.77
in.)
Transfer module - 37.7
mm (1.48
in.)
- 78.5
mm (3.09
in.)
- 55
mm (2.17
in.)
- 28.3
mm (1.11
in.)
Fuser - 79.8
mm (3.14
in.)
- 94.3
mm (3.71
in.)
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png) Print the Print Quality Test Pages.
Do the defects still appear? | Take note of the distance, and then contact customer support or your service representative. | The problem is solved. |