Gray or colored background

• Depending on your operating system, increase the toner darkness from the Printing Preferences or Print dialog.

Note:  You can also change the setting on the printer control panel. Navigate to Settings > Print > Quality > Toner Darkness.

• From the control panel, navigate to Settings > Print > Quality > Advanced Imaging, and then select Color Adjust.
• Make sure that the imaging kit and black imaging unit are properly installed.


1. Remove the imaging kit, and then remove the black imaging unit.

   Warning—Potential Damage:  Do not expose the imaging kit and black imaging unit to direct light for more than 10 minutes. Extended exposure to light may cause print quality problems.

   Warning—Potential Damage:  Do not touch the photoconductor drum under the imaging kit and black imaging unit. Doing so may affect the quality of future print jobs.



2. Insert the black imaging unit, and then insert the imaging kit.

If the problem persists, then contact customer support.