Dell 1100 Vertical lines, new toner cartridge. See Replacing the Toner Cartridge, Gray background

	• A single sheet of paper may be defective. Try reprinting the job.
	• The moisture content of the paper is uneven or the paper has moist spots on its
	surface. Try a different brand of paper. See "Paper Specifications".
	• The paper lot is bad. The manufacturing process can cause some areas to reject toner.
	Try a different kind or brand of paper.
	• The toner cartridge may be defective. See "Vertical repetitive defects".
	• If these steps do not correct the problems, contact a service representative.
Vertical lines	If black vertical streaks appear on the page, the drum inside the toner cartridge has probably been scratched. Install a
	new toner cartridge. See "Replacing the Toner Cartridge".
Gray background	If the amount of background shading becomes unacceptable:
	• Change to lighter weight paper. See "Paper Specifications".
	• Check the printer'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 "Replacing the Toner
	Cartridge".
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:
	• Clean the inside of the printer. See "Cleaning the Interior". After cleaning the inside of
	the printer, 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 excess 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
	sometimes 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".
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.