tap the stack of paper against a flat surface, and reload the paper into the photo tray. Follow the prompts on the display or the computer screen to continue your print job.

Cause: The paper is not feeding properly or is loaded incorrectly.

Solution: Make sure you have paper loaded correctly in the photo tray.

Cause: There might be too much paper loaded in the photo tray.

Solution: Do not overload the photo tray; make sure the stack of photo paper fits within the photo tray and is no higher than the top of the paper-width guide.

Cause: Two or more pieces of paper might be stuck together.

Solution: Remove the paper from the photo tray and shuffle the paper so it does not stick together. Reload the paper into the photo tray and try printing again.

Cause: The photo paper might be curled.

Solution: If the photo paper is curled, place the paper in a plastic bag and gently bend it the opposite direction of the curl until the paper lies flat. If the problem persists, use photo paper that is not curled.

Cause: You might be using the printer in an extremely high- or low-humidity environment.

Solution: Load one sheet of photo paper at a time.

Cause: The photo tray cannot engage or disengage.

Solution: Re-insert the photo tray and lower the output tray. To continue your print job, press OK on the control panel of the HP All-in-One.

Photo tray cannot engage

Cause: The photo tray might not be pushed all the way in.

Solution: Lift the output tray, then push the photo tray all the way in. Push the output tray all the way down.

Photo tray cannot disengage

Cause: The output tray might not be lowered all the way.

Troubleshooting

Errors 151