Dell 1815dn Multifunction Mono Laser Printer - Manual (Page 144)

Toner smear • Clean the inside of the printer. See "Cleaning the Interior" .
• Check the paper type and quality. See "Paper Specifications" .
• Remove the toner cartridge and install a new one. See "Replacing the Toner Cartridge" .
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.
Curl or wave • Ensure that the paper is loaded properly.
• Check the paper type and quality. Both high temperatures and humidity can cause paper curl. See "Paper
Specifications" .
• Turn over the stack of paper in the paper tray. Also try rotating the paper 180° in the paper tray.
• Try printing to the rear cover.
Wrinkles or creases • Ensure that the paper is loaded properly.
• Check the paper type and quality. See "Paper Specifications" .
• Turn over the stack of paper in the paper tray. Also try rotating the paper 180° in the paper tray.
• Try printing to the rear cover.
Back of printouts are dirty Check for leaks in the toner. Clean the inside of the printer. See "Cleaning the Interior" .