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Non-Repeating Marks on the Back Side of Page Printed from the Lexmark CS310, CS410, CS510, CX310, CX410, and CX510

Document ID:SO7217

Usergroup :External
03/04/14 Properties  


Print Quality; Non-Repeating Marks on Front Side; Spots; Streaks; Dirty Page; Toner specks; Smudges; Toner peppering; Leaking; Residue;



Unwanted spots or streaks of toner that appear on the back of the printed page can be caused from a contamination inside the fuser to a physical problem with the printer. See sample page below.



Print Defect Sample

Click Image to Enlarge

This article will help you confirm the problem. Please refer to the directions in the table below to help determine which hardware part is causing the issue.




Steps Actions
Check to see whether the printer supports the paper being used and that it meets all recommendations listed in the User’s Guide.
Make sure the Paper Type Setting on the printer and in the driver/software matches the type of paper loaded in the tray.

Run the Fuser Cleaning Process (see the subsequent table) to allow the fuser to clean itself. The toner streaking should fade away over time.


Fuser Cleaning Process

Step Action

Boot the printer to its Configuration Menu. To do this:

A Power OFF the printer.

For CS310

  • Press and hold the  and .

For CS410, CS510, CX310, CX410, CX510

  • Press and hold 2 & 6 buttons.
C Power ON the printer.
D Release the buttons after ten seconds.


Scroll to "Fuser Cleaning Process".

Select "Print Cleaning Pages". 

Note: The "Print Cleaning" pages will print and have instructions on them to place the pages face down in Tray 1. Please follow these instructions before proceeding to the next step.

Select "Start Cleaning Process." The printer will run the pages back through to help clean the fuser.

Turn the printer off and back on (do not hold down any buttons).

Note: If the above information did not help to resolve the print quality issue, please contact Lexmark Technical Support or a local authorized service provider to arrange a service call.



Contacting Lexmark

Please contact Lexmark Technical Support if you need additional assistance. NOTE: When calling for support, you will be asked for your machine/model type and serial number (SN). If you need help locating your printer's model type and serial number, click here.

Please call from near the printer in case the technician on the phone asks you to perform a task involving the printer.



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