Horizontal dark lines

Try one or more of the following:

• Depending on your operating system, specify the paper type from the Printing Preferences or Print dialog. Make sure that the setting matches the paper loaded.

Note:  You can also change the setting on the printer control panel. Navigate to Settings > Paper > Tray Configuration > Paper Size/Type.

• Make sure that the paper does not have a texture or rough finish.
• Load paper from a fresh package.

Note:  Paper absorbs moisture due to high humidity. Store the paper in its original wrapper until you are ready to use it.

• 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.