Samsung ML-2550 Series manual Problem Solution, Dropouts

Problem	Solution
Dropouts	If faded areas, generally rounded, occur randomly on the page:
	• A single sheet of paper may be defective. Try reprinting the
AaBbCc	job.
AaBbCc	• The moisture content of the paper is uneven or the paper has
AaBbCc	moist spots on its surface. Try a different brand of paper. See
	“Paper Specifications” on page G.3.
AaBbCc	• The paper lot is bad. The manufacturing processes can cause
AaBbCc	some areas to reject toner. Try a different kind or brand of
	paper.

•The toner cartridge may be defective. See “Vertical repetitive defects” on the next page.

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

Vertical lines			If black vertical streaks appear on the page:
			• The drum inside the toner cartridge has probably been
		AaBbCc
			scratched. Install a new toner cartridge.
		AaBbCc
		AaBbCc
		AaBbCc
		AaBbCc
Gray background			If the amount of background shading becomes unacceptable,
			the procedures below may fix the problem.
	AaBbCc		• Change to a lighter weight pages. See “Paper Specifications”
	AaBbCc		on page G.3.
			• Check the printer’s environment; very dry (low humidity) or
	AaBbCc
			high humidity (higher than 80% RH) conditions can increase
	AaBbCc
			the amount of background shading.
	AaBbCc		• Remove the old toner cartridge and install a new one. See
			“Installing the Toner Cartridge” on page 2.4.
Toner smear			• Clean the inside of the printer. See “Cleaning the Inside” on
			page 6.7.
			• Check the paper type and quality. See “Paper Specifications”
			on page G.3.
			• Remove the toner cartridge and install a new one. See
			“Installing the Toner Cartridge” on page 2.4.

7.16 SOLVING PROBLEMS