Samsung CPL-310N User Manual page 44

CONDITION SUGGESTED SOLUTIONS
White spots appear on the page:
White Spots
• 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 imaging unit has probably been
scratched. Remove the imaging unit and
install a new one. See page 37.
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 the front cover several
times and if the problem still occurs call the
contact a service representative.
Color or Black If the amount of background shading becomes
unacceptable:
background
• Change to a lighter weight paper. See
page 26.
• 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 toner cartridge and install
a new one. See page 36.
Toner smear • Clean the inside of the machine. See page
33.
• Check the paper type and quality. See page
26.
• Remove the toner cartridge and install a
new one. See page 36.
Vertical repetitive If marks repeatedly appear on the printed side
of the page at even intervals:
defects
• The toner 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 toner
cartridge and install a new one. See page
36.
• 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.
44 _Troubleshooting
CONDITION SUGGESTED SOLUTIONS
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
A
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 • If characters are improperly formed and
characters producing hollow images, the paper stock
may be too slick. Try a different paper. See
page 26.
Page skew • Ensure that the paper is loaded properly.
• Check the paper type and quality. See page
26.
• Ensure that the paper or other material is
loaded correctly and the guides are not too
tight or too loose against the paper stack.
Curl or wave • Ensure that the paper is loaded properly.
• Check the paper type and quality. Both high
temperature and humidity can cause paper
curl. See page 26.
• Turn over the stack of paper in the tray. Also
try rotating the paper 180° in the tray.
Wrinkles or creases • Ensure that the paper is loaded properly.
• Check the paper type and quality. See page
26.
• Turn over the stack of paper in the tray. Also
try rotating the paper 180° in the tray.