Samsung CLP-310 Toner specks, Dropouts, White Spots, Vertical lines, Color or Black, Background

CONDITION	SUGGESTED SOLUTIONS
Toner specks	• The paper may not meet specifications; for
AaBbCc	example, the paper is too moist or too
	rough. See page 28.
AaBbCc	• The paper path may need cleaning. See
AaBbCc	"Cleaning the inside" on page 35.
AaBbCc
AaBbCc
Dropouts	If faded areas, generally rounded, occur
	randomly on the page:
AaBbCc	• A single sheet of paper may be defective.
AaBbCc	Try reprinting the job.
	• The moisture content of the paper is
AaBbCc	uneven or the paper has moist spots on its
AaBbCc	surface. Try a different brand of paper. See
	page 28.
AaBbCc	• 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 printer properties, click Paper tab, and set type to Thick Paper. Refer to the Software section for details.

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

White Spots	White spots appear on the page:
	• The paper is too rough and a lot of dirt from
	the paper falls to the inner devices within
	the machine, which means the transfer belt
	may be dirty. Clean the inside of your
	machine. Contact a service representative.
	• The paper path may need cleaning.
	Contact a service representative.
Vertical lines	If black vertical streaks appear on the page:
	• The imaging unit has probably been
	scratched. Remove the imaging unit and
	install a new one. See page 39.
	If white vertical streaks appear on the page:
	• The surface of the LSU part inside the
	machine may be dirty. Clean the LSU by
	opening and closing the front cover several
	times and if the problem still occurs call the
	contact a service representative.

	CONDITION	SUGGESTED SOLUTIONS
Color or Black		If the amount of background shading becomes
background		unacceptable:
		• Change to a lighter weight paper. See
		page 28.
		• Check the machine’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 page 38.
Toner smear		• Clean the inside of the machine. See page
		35.
		• Check the paper type and quality. See page
		28.
		• Remove the toner cartridge and install a
		new one. See page 38.

Vertical repetitive	If marks repeatedly appear on the printed side
defects	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. After the printout, if you still have
	the same problems, remove the toner
	cartridge and install a new one. See page
	38.
	• 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.
	A	• 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.

46_Troubleshooting