Samsung SCX-4x24, SCX-4x28 manual Printing quality problems

CONDITION	POSSIBLE	SUGGESTED SOLUTIONS
	CAUSE
The printer	Incompatibility	Printing the PDF file as an image
does not	between the PDF	may solve this problem. Turn on
print PDF file	file and the Acrobat	Print As Image from the Acrobat
correctly.	products.	printing options.
Some parts		It will take longer to print
of graphics,		when you print a PDF file
text, or		as an image.
illustrations
are missing.
The print	The resolution of the	Reduce the photo size. If you
quality of	photo is very low.	increase the photo size in the
photos is not		software application, the
good. Images		resolution will be reduced.
are not clear.
The machine	If you are under the	Suggested solutions: Change the
prints, but	DOS environment,	font setting. See "Changing the
the text is	the font setting for	font setting" on page 28.
wrong,	your machine may
	be set incorrectly.
garbled, or
incomplete.
Before	Using damp paper	This is not a problem. Just keep
printing, the	can cause vapor	printing.
machine	during printing.
emits vapor
near the
output tray.

Printing quality problems

If the inside of the machine is dirty or paper has been loaded improperly, you may notice a reduction in print quality. See the table below to clear the problem.

	CONDITION	SUGGESTED SOLUTIONS
Light or faded print		If a vertical white streak or faded area appears on
		the page:
		• The toner supply is low. You may be able to
		temporarily extend the toner cartridge life. See
		page 60. If this does not improve the print
		quality, install a new toner cartridge.
		• The paper may not meet paper specifications;
		for example, the paper is too moist or too
		rough. See page 30.
		• If the entire page is light, the print resolution
		setting is too low. Adjust the print resolution.
		See the help screen of the printer driver.
		• A combination of faded or smeared defects
		may indicate that the toner cartridge needs
		cleaning.
		• The surface of the LSU part inside the machine
		may be dirty. Clean the LSU, contact a service
		representative.

CONDITION	SUGGESTED SOLUTIONS
Toner specks	• The paper may not meet specifications; for
AaBbCc	example, the paper is too moist or too rough.
	See page 30.
AaBbCc	• The paper path may need cleaning. See
AaBbCc	"Cleaning the inside" on page 57.
AaBbCc
AaBbCc
Dropouts	If faded areas, generally rounded, occur randomly
AaBbCc	on the page:
	• A single sheet of paper may be defective. Try
AaBbCc	reprinting the job.
	• The moisture content of the paper is uneven or
AaBbCc	the paper has moist spots on its surface. Try a
AaBbCc	different brand of paper. See page 30.
	• The paper lot is bad. The manufacturing
AaBbCc	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 drum inside the toner cartridge has

probably been scratched. Remove the toner cartridge and install a new one. See page 60.

If white vertical streaks appear on the page:

• The surface of the LSU part inside the machine may be dirty. Clean the LSU, contact a service representative.

Color or Black	If the amount of background shading becomes
background	unacceptable:

•Change to a lighter weight paper. See page 30.

•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 60.

Troubleshooting_ 71