Vertical lines

Make sure that the priority input tray is in place.

The photosensitive drum inside the print cartridge has probably been scratched. Install a new HP print cartridge. See Changing the print cartridge for instructions.

Gray background

Make sure that the priority input tray is in place.

Decrease the print density setting through HP toolbox. This decreases the amount of background shading. See Printer media specifications.

Change the media to a lighter basis weight. See Printer media specifications for more information.

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

Install a new HP print cartridge. See Changing the print cartridge for instructions.

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. See Cleaning the printer for more information.

Check the media type and quality.

Try installing a new HP print cartridge. See Changing the print cartridge for instructions.

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

Loose toner

Clean the inside of the printer. See Cleaning the printer for

instructions.

Check the media type and quality. See Printer media

specifications for more information.

Try installing a new HP print cartridge. See Changing the print cartridge for instructions.

In your printer driver, make sure the appropriate media type is selected.

Plug the printer directly into an AC outlet instead of into a power strip.

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