Vertical lines

The photosensitive drum inside the print cartridge has probably been scratched. Install a new HP print cartridge. See Replace the print cartridge on page 40.

Gray background

Make sure that tray 1 is in place.

Decrease the print density setting through the embedded Web server. This decreases the amount of background shading.

Change the media to a lighter basis weight.

Check the device environment. Very dry (low humidity) conditions can increase the amount of background shading.

Install a new HP print cartridge. See Replace the print cartridge on page 40.

Toner smear

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

Check the media type and quality.

Try installing a new HP print cartridge. See Replace the print cartridge on page 40.

The fuser temperature might be too low. In your printer driver, make sure the appropriate media type is selected.

70 Chapter 7 Problem solving

ENWW