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Edge background on Pages Printed from the Lexmark CS310, CS410, CS510, CX310, CX410, and CX510

Document ID:SO7195

Usergroup :External


Print Quality; Edge Background; Color; Lines; Voids; Faded; Gap;



Splotches of random color print in areas that should not have them. These marks may not cover the entire page from left to right, but they usually do cover the page from top to bottom.

NOTE: These splotches are not speckled or dotted; rather, the effect is a diffuse and cloudy appearance. See image sample 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
1 Replace the paper in the printer with new paper from an unopened ream. Print a sample page. If issue persists, proceed with the steps below.
2 As this issue can be due to an older level of firmware, please update the firmware to the latest version.

Download the latest firmware code.

  1. Go to Lexmark Support website
  2. Click the Support & Downloads link on the left-hand pane. 
  3. Type your printer model inside the “Search by Product or Software Name” box, then hit Select. Example: Lexmark CS310 or CX310
  4. Click the “Downloads” tab and check the latest firmware version. 
  5. Click the “Download” button and save the file. Make a note as to where you have the files saved.

Note: The downloaded ZIP file should contain a text document (Update Instructions) and an “.fls” file (actual code).

4 Turn off the printer for one hour and disconnect the power cord at both ends.
5 After an hour has passed, power the printer back on and print a test page.
Did the issue returns?

Yes: Proceed with the steps below.
No: Issue is resolved.

6 Verify that all of the developers units and photoconductor units are installed. If all these are installed, remove them from the printer and then re-install.
7 If re-seating the developers units and photoconductor units does not correct the issue, replace them with new supplies. If you have no replacement supplies in stock, please contact Lexmark Technical Support for other troubleshooting suggestions.



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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