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Troubleshooting_ 101
White Spots If white spots appear on the page:
• T
he paper is too rough and a lot of dirt from a
paper falls to the inner devices within the
machine, so the transfer roller may be dirty.
Clean the inside of your machine (See
"Cleaning the inside" on page 88).
• T
he paper path may need cleaning (See
"Cleaning the inside" on page 88).
Vertical lines If black vertical streaks appear on the page:
• T
he surface (drum part) of the toner
cartridge inside the machine has probably
been scratched. Remove the toner cartridge
and install a new one (See "Replacing the
toner cartridge" on page 107).
If white vertical streaks appear on the page:
• The surface of the LSU part inside the
machine may be dirty (See "Cleaning the
inside" on page 88).
Black background If the amount of background shading becomes
unacceptable:
• C
hange to a lighter weight paper (See "Print
media specifications" on page 111).
• Check the environmental conditions: very
dry conditions or a high level of humidity
(higher than 80% RH) can increase the
amount of background shading.
• R
emove the old toner cartridge and, install a
new one (See "Replacing the toner
cartridge" on page 107).
Toner smear If toner smears on the page:
• C
lean the inside of the machine (See
"Cleaning the inside" on page 88).
• C
heck the paper type and quality (See "Print
media specifications" on page 111).
• Remove the toner cartridge and then, install
a new one (See "Replacing the toner
cartridge" on page 107).
Vertical repetitive
defects
If marks repeatedly appear on the printed side of
the page at even intervals:
• T
he toner cartridge may be damaged. If you
still have the same problem, remove the
toner cartridge and, install a new one (See
"Replacing the toner cartridge" on
page 107).
• Pa
rts 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.
A
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
packages of paper until necessary so that
the paper does not absorb too much
moisture.
• I
f 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 in Printing Preferences (See
"Opening printing preferences" on page 53).
Misformed
characters
• If characters are improperly formed and
producing hollow images, the paper stock
may be too slick. Try different paper (See
"Print media specifications" on page 111).
• I
f characters are improperly formed and
producing a wavy effect, the scanner unit may
need service (See "Cleaning the scan unit" on
page 89).
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Page skew • Ensure that the paper is loaded properly.
• C
heck the paper type and quality (See "Print
media specifications" on page 111).
• Ensure that the guides are not too tight or too
loose against the paper stack.
Curl or wave • Ensure that the paper is loaded properly.
• C
heck the paper type and quality. Both high
temperature and humidity can cause paper
curl (See "Print media specifications" on
page 111).
• Turn the stack of paper over in the tray. Also
try rotating the paper 180° in the tray.
CONDITION SUGGESTED SOLUTIONS