HP LaserJet 3020 All-in-One Printer - Manual (Page 114)

Gray background
● Make sure that the priority input tray is in place.
● Decrease the print density setting by using the HP toolbox. This decreases the amount of
background shading. See the device software Help for more information.
● Change the media to a lighter basis weight. See Device media specifications for more
information.
● Check the device environment. Very dry (low humidity) conditions can increase the
amount of background shading.
● Install a new HP print cartridge. See the start guide for instructions.
Toner smear
● The fuser temperature might be too low. For Windows printer drivers, check Type is: on
the Paper tab or the Paper/Quality tab, and make sure that it is set to the appropriate
media. See
Optimizing print quality for media types for instructions.
For Macintosh printer drivers, check Type is: on the Paper/Quality tab or the Paper tab
(the Paper Type/Quality tab for some Macintosh drivers), and make sure that it is set to
the appropriate media. See
Optimizing print quality for media types for instructions.
● If toner smears appear on the leading edge of the media, the media guides might be dirty.
Wipe the media guides with a dry, lint-free cloth. See
Cleaning the media path for more
information.
● Check the media type and quality.
● Try installing a new HP print cartridge. See the start guide for instructions.
104 Chapter 8 Troubleshooting ENWW