Lexmark C782 Service Manual - Page 147

5061 User troubleshooting for quality 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. Quality troubleshooting Symptom Repeating defects Cause Either the print cartridges are defective, the image transfer unit and transfer roller are defective, or the fuser is defective. Solution Marks occur repeatedly only in one color and multiple times on a page: • Replace the cartridge if the defects occur every: - 48 mm (1.9 in.) - 97 mm (3.8 in.) Marks occur down the page repeatedly in all colors: • Replace the transfer roll if the defects occur every 60 mm (2.4 in.) • Check the first transfer bellcranks and springs or replace the image transfer unit if the defects occur every 101 mm (4 in.) • Replace the fuser if the defects occur every 148 mm (5.8 in.) Marks occur on every third or sixth page in any color: Replace the image transfer unit. Color misregistration AABBCCDE ABCDE Color has shifted outside of the appropriate area or has been superimposed over another color area. 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 under the Utilities Menu. White or colored line ABCDE ABCDE ABCDE Either the print cartridges are defective, the image transfer unit and transfer roller are defective, or the fuser is defective. 1. Replace the color print cartridge causing the line. 2. If you still have the problem, replace the image transfer unit and transfer roller. 3. If you still have the problem, replace the fuser. Diagnostic information 2-105