Dell 1130n Laser Mono Printer - Manual (Page 78)

inside of your machine. (See Cleaning the inside .)
The paper path may need cleaning. (See Cleaning the inside .)
Vertical lines If black vertical streaks appear on the page:
The 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 .)
If white vertical streaks appear on the page:
The surface of the LSU part inside the machine may be dirty. (See Cleaning
the inside .)
Black background If the amount of background shading becomes unacceptable:
Change to a lighter weight paper. (See Print media specifications .)
Check the environmental conditions: very dry conditions or a high level of
humidity (higher than 80% RH) can increase the amount of background
shading.
Remove the old toner cartridge and, install a new one. (See
Replacing the
toner cartridge .)
Toner smear If toner smears on the page:
Clean the inside of the machine. (See Cleaning the inside .)
Check the paper type and quality. (See Print media specifications .)
Remove the toner cartridge and then, 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 you still have the same problem,
remove the toner cartridge and, install a new one. (See
Replacing the toner
cartridge .)
Parts 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.
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.
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 in Printing
Preferences. (See
Opening printing preferences .)
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 .)
Page skew Ensure that the paper is loaded properly.
Check the paper type and quality. (See
Print media specifications .)
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.