Lexmark 920 manual Solving print quality problems, Marks occur repeatedly only in one, All colors

Troubleshooting

Solving print quality problems

To help isolate print quality problems, print the Print Quality Test Pages.

1Turn the printer off.

2Press and . Hold them while you turn the printer on, and until the Performing Self Test message appears.

Config Menu.appears.

3Press until Prt Quality Pgs appears, and then press .

The pages are formatted. The Printing Quality Test Pages message appears, then the pages print. The message remains on the operator panel until all the pages print.

After the Print Quality Test Pages print, to exit the Config Menu:

4 Press until Exit Config Menu appears, and then press to complete the procedure.

The information in the following table may help you solve print quality problems. If these suggestions still do not correct the problem, call for service. You may have a printer part that requires adjustment or replacement.

Symptom	Cause	Solution
Repeating defects	Either a toner cartridge, a	Marks occur repeatedly only in one
	photodeveloper, the transfer	color and multiple times on a page:
	belt or the fuser is defective.	• Replace the toner cartridge if the defects
		occur every:
		– 45.1 mm (1.78 in.)
		– 60 mm (2.4 in.)
		• Replace the photodeveloper (black
		alone or all other colors at once) if the
		defects occur every:
		– 31.5 mm (1.2 in.)
		– 94 mm (3.7 in.)

		Marks occur across the page repeatedly
		in all colors:
		• Replace the transfer belt if the defects
		occur every 27 mm (1.1 in.)
		• Replace the fuser if the defects occur
		every 140 mm (5.5 in.)
Color misregistration	Color has shifted outside of	Top to Bottom or Left to Right:
	the appropriate area or has	1 Re-seat the cartridges by removing
	been superimposed over
		them from the printer and then
ABCDE	another color area.
		reinserting them.
		2 Adjust the color alignment. Use the
ABCDE		Alignment page under the Utilities Menu.

Solving print quality problems

144