Dell 2355dn User Manual page 309

Condition
Vertical repetitive
defects
Background scatter
A
Misformed characters
Page skew
308
Suggested solutions
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; see "Cleaning the Drum". After the printout, if you
still have the same problems, install a new toner cartridge. See "Replacing the Toner
Cartridge".
• 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 representative.
Background scatter results from bits of toner 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.
• If characters are improperly formed and produce hollow images, the paper stock may be too
slick. Try a different paper. See "Paper Specifications".
• If characters are improperly formed and produce a wavy effect, the scanner unit may need
service. For service, contact a service representative.
• Ensure that the paper is loaded properly.
• Check the paper type and quality. See "Paper Specifications".
• Ensure that the paper or other material is loaded correctly and the guides are not too tight or
too loose against the paper stack.