Samsung ML-1860, 1865 manual Printing quality problems, Condition

Printing quality problems

If the inside of the machine is dirty or paper has been loaded improperly, there might be 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 "Redistributing toner"
		on page 49.) If this does not improve the print
		quality, install a new toner cartridge.

•The paper may not meet paper specification; for example, the paper may be too moist or rough. (See "Print media specifications" on page 62.)

•If the entire page is light, the print resolution setting is too low or the toner save mode is on. Adjust the print resolution and turn the toner save mode off. See the help screen of the printer driver.

•A combination of faded or smeared defects may indicate that the toner cartridge needs cleaning. (See "Cleaning the inside" on page 47.)

Toner specks	• The paper may not meet specification; for
	example, the paper may be too moist or
	rough. (See "Print media specifications" on
	page 62.)
	• The transfer roller may be dirty. Clean the
	inside of your machine. Contact a service
	representative.
	• The paper path may need cleaning. Contact a
	service representative.
Dropouts	If faded areas, generally rounded, occur
	randomly on the page:
	• 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 "Print
	media specifications" on page 62.)
	• 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 the Paper
	tab, and set type to Thick. (See "Opening
	printing preferences" on page 34.)
	• If these steps do not correct the problem,
	contact a service representative.

Condition

White Spots

Vertical lines

G

Black background

Toner smear

Vertical repetitive defects

Suggested Solutions

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 47.)

•The paper path may need cleaning. (See "Cleaning the inside" on page 47.)

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 58.)

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 47.)

If the amount of background shading becomes unacceptable:

•Change to a lighter weight paper. (See "Print media specifications" on page 62.)

•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" on page 58.)

If toner smears on the page:

•Clean the inside of the machine. (See "Cleaning the inside" on page 47.)

•Check the paper type and quality. (See "Print media specifications" on page 62.)

•Remove the toner cartridge and then, install a new one. (See "Replacing the toner cartridge" on page 58.)

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" on page 58.)

•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.

Troubleshooting_ 54