User's Manual

Troubleshooting_77
Dropouts If faded areas, generally rounded, occur randomly
on the page:
• A single sheet of paper may be defective. Try
reprinting the job.
• The moisture content of the paper is uneven or
the paper has moist spots on its surface. Try a
different brand of paper. See page 33.
• The paper lot is bad. The manufacturing
processes can cause some areas to reject
toner. Try a different kind or brand of paper.
• Change the printer option and try again. Go to
printer properties, click Paper tab, and set type
to Thick Paper. Refer to the Software section
for details.
If these steps do not correct the problem, contact a
service representative.
White Spots
White spots appear on the page:
• The paper is too rough and a lot of dirt from the
paper falls to the inner devices within the
machine, which means the transfer belt may be
dirty. Clean the inside of your machine. Contact
a service representative.
• The paper path may need cleaning. Contact a
service representative.
Vertical lines If black vertical streaks appear on the page:
• The drum inside the print cartridge has
probably been scratched. Remove the print
cartridge and install a new one. See page 65.
If white vertical streaks appear on the page:
• The surface of the LSU part inside the machine
may be dirty. Clean the LSU, contact a service
representative.
Color or Black
background
If the amount of background shading becomes
unacceptable:
• Change to a lighter weight paper. See page 33.
• Check the machine’s environment: very dry
(low humidity) or high humidity (higher than
80% RH) conditions can increase the amount
of background shading.
• Remove the old print cartridge and install a new
one. See page 65.
Toner smear • Clean the inside of the machine. See page 62.
• Check the paper type and quality. See page 33.
• Remove the print cartridge and install a new
one. See page 65.
CONDITION SUGGESTED SOLUTIONS
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
Vertical repetitive
defects
If marks repeatedly appear on the printed side of
the page at even intervals:
• The print cartridge may be damaged. If a
repetitive mark occurs on the page, print a
cleaning sheet several times to clean the
cartridge. After the printout, if you still have the
same problems, remove the print cartridge and
install a new one. See page 65.
• Parts of the machine 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 representative.
Background scatter Background scatter results from bits of toner
randomly distributed on the printed page.
• 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 moisture.
• 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.
Misformed
characters
• If characters are improperly formed and
producing hollow images, the paper stock may
be too slick. Try a different paper. See page 33.
• If characters are improperly formed and
producing a wavy effect, the scanner unit may
need service. For service, contact a service
representative.
Page skew • Ensure that the paper is loaded properly.
• Check the paper type and quality. See page 33.
• Ensure that the paper or other material is loaded
correctly and the guides are not too tight or too
loose against the paper stack.
CONDITION SUGGESTED SOLUTIONS
A
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc