Lexmark C790 series - Solving Print Quality Problems; Printer Is Printing Blank Pages

Solving print quality problems
If the solutions here do not correct the problem, contact customer support. You may have a printer part that requires
adjustment or replacement.
Isolating print quality problems
Print the print quality test pages to help isolate print quality problems.
1 Turn the printer off.
2 Load letter- or A4-size paper in the tray or feeder.
3 Hold down and
6
MNO
while turning the printer on.
4 Release the buttons when the screen with the progress bar appears.
The printer performs a power-on sequence, and then the Configuration menu appears.
5 Touch Print Quality Pages > Print Quality Pages.
The print quality test pages print.
6 Touch Back > Exit Config Menu.
Printer is printing blank pages
Try one or more of the following:
MAKE SURE THERE IS NO PACKING MATERIAL LEFT ON THE PRINT CARTRIDGE
Remove the print cartridge and make sure the packing material is properly removed. Reinstall the print cartridge.
MAKE SURE THE PRINT CARTRIDGE IS NOT LOW ON TONER
When 88.xx [color] cartridge low appears, make sure that toner is distributed evenly among all four
print cartridges or whichever color has the shadow images:
1 Remove the print cartridge.
Warning—Potential Damage: Be careful not to touch the photoconductor drum. Doing so may affect the print
quality of future print jobs.
2 Firmly shake the cartridge side-to-side and front-to-back several times to redistribute the toner.
3 Reinsert the print cartridge.
Note: If print quality does not improve, replace the print cartridge of the color that is not printing.
Troubleshooting
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