E. "vertical repetitive defects, Aabbcc – Dell 2355dn Multifunction Mono Laser Printer User Manual

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Vertical repetitive
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; 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

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.

Misformed characters

• 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.

Page skew

• 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.

Condition