Samsung CLP775ND Dropouts, White Spots, Vertical lines, Color or Black, Background, Toner smear

	Condition	Suggested Solutions
Dropouts		If faded areas, generally rounded, occur randomly
		on the page:
	A a B b C	• A single sheet of paper may be defective. Try
	A a B b C	reprinting the job.
		• The moisture content of the paper is uneven or
	A a B b C
		the paper has moist spots on its surface. Try a
	A a B b C	different brand of paper. (See "Print media
		specifications" on page 92.)
	A a B b C
		• The paper lot is bad. The manufacturing
		processes can cause some areas to reject
		toner. Try a different kind or brand of paper.

•Change the printer option and try again. Go to Printing Preferences, click Paper tab, and set type to Thick. (See "Opening printing preferences" on page 48.)

•If these steps do not correct the problem, contact a service representative.

White Spots	If white spots appear on the page:
	• The paper is too rough and a lot of dirt from a
	paper falls to the inner devices within the
	machine, so the transfer roller may be dirty.
	Clean the inside of your machine. (See
	"Cleaning the inside" on page 65.).
	• The paper path may need cleaning. (See
	"Cleaning the inside" on page 65.)
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" on page 84.)
	If white vertical streaks appear on the page:
	• The surface of the LSU part inside the
	machine may be dirty. (See "Cleaning the
	inside" on page 65.)
Color or Black	If the amount of background shading becomes
background	unacceptable:
	• Change to a lighter weight paper. (See "Print
	media specifications" on page 92.)
	• Check the environmental conditions: very dry
	conditions (low humidity) 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"
	on page 84.)

	Condition	Suggested Solutions
Toner smear		If toner smears on the page:
		• Clean the inside of the machine. (See
		"Cleaning the inside" on page 65.)
		• Check the paper type and quality. (See "Print
		media specifications" on page 92.)
		• Remove the toner cartridge and then, install a
		new one. (See "Replacing the toner cartridge"
		on page 84.)
Vertical repetitive		If marks repeatedly appear on the printed side of
defects		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" on page 84.)
		• 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		Background scatter results from bits of toner
scatter		randomly distributed on the printed page.
		• The paper may be too damp. Try printing with
	A	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" on page 48.)
Toner particles are		The toner might not adhere properly to this type of
around bold		paper.
characters or		• Change the printer option and try again.
pictures		Go to the Printing Preferences, click the
		Paper tab, and set the paper type to
		Recycled.

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