Step 1  Check if the printer is using a genuine and supported Lexmark toner cartridge. Note: If the cartridge is not supported, then install a supported one. Print the document.
Is the print mottled? | Go to step 2. | The problem is solved. |
Step 2 Check the printer for leaked toner contamination. Is the printer free of leaked toner? | Go to step 3. | Contact customer support. |
Step 3 Check the status of the imaging unit. From the home screen, touch Settings > Reports > Device > Device Statistics. From the Supply Information section of the pages printed, check the status of the imaging unit.
Is the imaging unit near end of life? | Go to step 4. | Contact customer support. |
Step 4 Replace the imaging unit. Print the document.
Is the print mottled? | Contact customer support. | The problem is solved. |