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 64.)

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.

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.

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.

If you are printing small sizes (such as index cards), make sure the paper is oriented correctly in the tray.

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.

Do not use 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.

Clean the printer.

Contact an HP-authorized service or support provider to perform routine printer maintenance. (See the HP Support pages at the front of this user’s guide.)

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Chapter 4: Problem Solving 71

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HP 4000TN, 4000N manual Solving Repeated Paper Jams, If paper jams occur frequently, try the following