Hello.
From the HP site:
There could a problem in the pickup assembly area of the product. There are twoblack Mylar light shields approximately 3.5 inches long. They are located onboth sides of the pickup roller under the pickup roller rod. One or both ofthese black Mylar shields can be tucked under, or partially bent when removinga paper jam from the paper input tray slot.
Reposition the black Mylar light shields back into the proper position.
- Unplug the power cord from the product.
- Remove the paper and paper input tray.
- Slide hands, palms side up, into the paper input tray cavity until the fingertips reach the end of the cavity.
4. Bend fingers up to push theblack Mylar light shields back into place. The proper position of the blackMylar light shield will be flat.
5. Reconnect the power cord.
6. Print a self-test/configuration page to verify product is functioningcorrectly.
If still a problem, make sure that the tray, paper is locked in thecorrect position. Sometimes the spring in the tray can become worn out andloose. You can take that out and spread it out a little. Also, make sure thatthe tray bottom is free to move. Take out the paper and see if it goes up anddown correctly. If you don't hear the pickup roller moving or the motor runningyou may have a bad feed roller gear. There also, could be a problem with thepickup roller.
Hope this helps.