46 _Troubleshooting
Ton er spec ks
• The paper may not meet specifications; for
example, the paper is too moist or too
rough. See page 28.
• The paper path may need cleaning. See
"Cleaning the inside" on page 35.
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 mo is t spo ts on it s
surface. Try a different brand of pa per. See
page 28.
• The paper lot is bad. The manufacturing
processes can cause some areas to reject
toner. Try a different kind or brand of
paper.
• Cha nge the printe r option and tr y again. Go
to printer properties, click Paper tab, and
set type to Thick Paper. Refer to the
Soft war e se ction for details.
If these steps do not correct the problem,
contact a service representative.
White Spots White spots appear on the page:
• The pa per is too rough an d a lot of d irt from
the paper falls to the inner devices within
the ma chine, whi ch means the transfer belt
may be dirty. Clean the inside of your
machine. Contact a service representative.
• The paper path may need cleaning.
Contac t a servi ce repre se nta tiv e.
Vert ical lines
If black vertical streaks appear on the page:
• The imaging unit has probably been
scratched. Remove the imaging unit and
install a new one. See page 39.
If white vertical streaks appear on the page:
• The surface of the LSU part inside the
machine may be dirty. Clean the LSU by
opening and closing t he front cov er several
times a nd if the problem sti ll occurs cal l the
contact a service representative.
CONDITION SUGGESTED SOLUTIONS
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
Color or Black
background
If the a mount of b ac kgroun d shad ing be come s
unacceptable:
• Change to a lighter weight paper. See
page 28.
• Check the machine’s environment: very dry
(low hu midity) or h igh hum idity (high er than
80% RH) conditions can increase the
amount of background shading.
• Remove the old toner cartridge and install
a new one. See page 38.
Tone r smear
• Clean the inside of the machine. See page
35.
• Ch eck th e pape r type a nd qual ity. Se e page
28.
• Remove th e toner cartridge and install a
new one. See page 38.
Vertical repe titive
defects
If marks repeatedly appear on the printed side
of the page at even intervals:
• The toner cartridge may be damaged. If a
repetitive mark occurs on the page, print a
cleaning sheet several times to clean the
cartridge. Afte r the printo ut, if yo u still have
the same problems, remove the toner
cartridge and install a new one. S ee page
38.
• 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.
Back ground scatter
Background scatter results from bits of toner
randomly distri bu ted on the prin ted page.
• The paper may be too damp. Try printing
with a diffe rent batch of paper. Do not ope n
packages of paper until necessary so that
the paper does not absorb too m uch
moisture.
• If background scatter occurs on an
envelope , chan ge the prin tin g layout to
avo id print ing 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.
CONDITION SUGGESTED SOLUTIONS