Note: Before solving the problem, print the Print Quality Test Pages. From the control panel, navigate to Settings > Troubleshooting > Print Quality Test Pages. For non‑touch‑screen printer models, press to navigate through the settings.
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.
Check the printer for leaked toner contamination.
Is the printer free of leaked toner?
Go to step 3.
Contact customer support.
Check the status of the imaging unit. From the control panel, navigate to:
Status/Supplies > Supplies
Is the imaging unit near end of life?
Go to step 4.
Replace the imaging unit.