Affected Products:![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Single-Function: B2236
Multifunction: MB2236, MB2236i
Issue Description:
Dark vertical streaks are observed when printing a document. These dark streaks are also seen continuing into the white spaces of the printed document.
Print Defect Sample
Solution:
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Perform a power-on-reset (POR) by powering the printer off and power it back on.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Open the printer front door and remove the supplies.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Remove the toner cartridge from the imaging unit to separate the two supplies.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Insert the toner cartridge back to the imaging unit, install back the supplies to the printer and close the front door.
![](https://publications.lexmark.com/media/ids_assets/images/transparent.png)
Perform a test print and check if the PQ issue still appears.
Still Need Help?
Have the following available when calling Lexmark Technical Support;
- Printer model(s)
- Printer serial number
- Toner/imaging unit/waste toner bottle part number and serial number
LEGACY ID: SO8753