Solving Repeated Paper Jams

If paper jams occur frequently, try the following:

Check all the paper jam locations. A piece of paper might be stuck somewhere in the printer. (See page 91.)

Check that paper is correctly loaded in the trays, that the trays are correctly adjusted for the loaded paper size, and that the trays are not overfilled. Make sure paper is under front and back tabs. (See the sections on loading paper, starting on page 34.)

Check that all trays and paper handling accessories are completely inserted into the printer. (If a tray is opened during a print job, this might cause a paper jam.)

Check that all covers and doors are closed. (If a cover or door is opened during a print job, this might cause a paper jam.)

Try printing to a different output bin (page 32).

The sheets might be sticking together. Try bending the stack to separate each sheet. Do not fan the stack.

If you are printing from Tray 1, try feeding fewer sheets of paper or fewer envelopes at a time.

If printing from the envelope feeder, make sure it is loaded correctly, pushing the bottom envelope in slightly farther than the top envelopes (page 51).

If you are printing small sizes (such as index cards), make sure the paper is oriented correctly in the tray (page 57). Make sure to feed the short edge first when loading narrow paper.

Turn over the stack of paper in the tray. Also try rotating the paper 180°.

Check the quality of the paper being printed. Damaged or irregular paper should not be used.

Use only paper that meets HP specifications (pages A-2 through A-14).

Avoid using paper that has already been used in a printer or copier. (Do not print on both sides of envelopes, transparencies, or labels.)

Check that the power supplied to the printer is steady, and meets printer specifications (page A-16).

Clean the printer (page 83).

Perform routine printer maintenance (page 87).

102 Chapter 4: Problem Solving

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HP 4050 manual Solving Repeated Paper Jams, If paper jams occur frequently, try the following