HP LaserJet 4050, 4050N, 4050T and 4050TN Printers - User's Guide

102 Chapter 4: Problem Solving
EN
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).