Lexmark CX833 - Horizontal dark lines

Try one or more of the following:
• Open door B, and then make sure that the second transfer roller is locked in place.
• 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 aect 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.
Horizontal dark lines
Notes:
• Before solving the problem, print the Print Quality Test Pages. From the control panel, navigate to
Settings > Troubleshooting > Print Quality Test Pages.
• Use tray 1 to print the sample pages and make sure that the paper is loaded in the portrait orientation.
• If horizontal dark lines keep appearing on the prints, then see “Repeating defects” on page 467.
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 aect the quality of future print jobs.
2 Insert the black imaging unit, and then insert the imaging kit.
Troubleshoot a problem 464