Lexmark 920dtn User's Guide - Page 144

Troubleshooting Solving print quality problems To help isolate print quality problems, print the Print Quality Test Pages. 1 Turn the printer off. 2 Press and . Hold them while you turn the printer on, and until the Performing Self Test message appears. Config Menu.appears. 3 Press 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 Repeating defects Color misregistration Cause Either a toner cartridge, a photodeveloper, the transfer belt or the fuser is defective. AABBCCDDEE Color has shifted outside of the appropriate area or has been superimposed over another color area. ABCDE Solution Marks occur repeatedly only in one color and multiple times on a page: • 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.) Top to Bottom or Left to Right: 1 Re-seat the cartridges by removing them from the printer and then reinserting them. 2 Adjust the color alignment. Use the Alignment page under the Utilities Menu. Solving print quality problems 144