If marks repeatedly appear on the printed side of the page at
• The toner cartridge may be damaged. If a repetitive mark
occurs on the page, print a cleaning sheet several times to
clean the cartridge; see page 6.9. After the printout, if you
still have the same problems, install a new toner cartridge.
See “Installing the Toner Cartridge” on page 2.4.
• Parts of the printer may have toner on them. If the defects
occur on the back of the page, the problem will likely correct
itself after a few more pages.
• The fusing assembly may be damaged. Contact a service
Background scatter results from bits of toner distributed on the
• The paper may be too damp. Try printing with a different
batch of paper. Do not open packages of paper until
necessary so that the paper does not absorb too much
• If background scatter occurs on an envelope, change the
printing layout to avoid printing over areas that have
overlapping seams on the reverse side. Printing on seams
can cause problems.
• If background scatter covers the entire surface area of a
printed page, adjust the print resolution through your
software application or the printer properties.
• If characters are improperly formed and producing hollow
images, the paper stock may be too slick. Try a different
paper. See “Paper Specifications” on page F.3.
• If characters are improperly formed and producing a wavy
effect, the scanner unit may need service. Verify that it also
occurs on a demo page (see page 2.14). For service, contact
a service representative.
• Check the paper type and quality. See “Paper Specifications”
on page F.3.
• Ensure that the paper or other material is loaded correctly
and the guides are not too tight or too loose against the