Lexmark C782 Service Manual - Page 145

5061 Toner is on the back of the printed page Do the following steps before proceeding with this service check: 1. Enter the Diagnostics Mode. 2. Select Print Test, Tray 1, Continuous from the menu. 3. Run at least 20 pages of text, and see if the problem remains. • If toner is still on the back of the printed page, proceed with this service check. • If the problem is on the top two inches of the page, replace the second transfer roll. • If the toner is "stringy" over the top half of the page, go to step 1. Step Actions and questions 1 Media settings-Does the media setting match the current media type? 2 Does resetting the media type fix the problem? 3 Fuser settings-Set the fuser to High in the CE menu. Does setting the fuser to High fix the problem? Yes Set the printer for current media type, and go to step 2. Problem resolved Problem resolved No Go to step 3 Go to step 3 Replace the fuser assembly. See "Fuser assembly removal" on page 4-44. Light lines or streaks appear on the page Single color streaks outside the printed page are most likely caused by a problem in the print cartridge. Replace the print cartridge. All the colors streaking at a different spot on each page is probably caused by a damaged ITU assembly. Replace the ITU assembly. See "ITU assembly removal" on page 4-49. If only one color streaks in the printed area, go to step 1. Step 1 2 Actions and questions Print cartridge check-Try a new print cartridge. Does a new print cartridge fix the problem? Printhead check-The printhead lens may be contaminated by toner. Check for any signs of contamination on the lens of the printhead. Is the printhead contaminated? Yes Problem resolved No Go to step 2 Go to Clear the printhead lens with a soft, lintfree cloth. Contact your next level of support. Diagnostic information 2-103