Lexmark C950 Service Manual - Page 268

5058-030 Vertical lines and bands (process direction) Leading edge Previous Next Go Back Trailing edge Step Check Yes 1 Check the media condition. Load new, dry, recommended media. Reprint the defective image. Go to step 2. Does the problem remain? 2 Is the media transfer route and the media path clear of Go to step 3. debris? 3 Check the LED beam route. Go to step 4. Check for debris between the LED printhead assembly and the PC drum. Check the four LED printhead assembly windows for contamination. Is the LED beam route free of debris and the glass window, in the LED printhead assembly, free of contamination? 4 Check the four PC cartridges for proper installation. Check the PC cartridge connections. Go to step 5. Are the PC cartridge connections free of excess wear and contamination? 5 Replace the transfer belt cleaner. Go to "Transfer belt cleaner removal" on page 4-172. Go to step 6. Does the problem remain? 6 Check the 2nd transfer roller for contamination and wear. Go to step 7. Is the 2nd transfer roller free of excess wear and contamination? No Problem resolved Remove debris or contamination. Remove debris or clean the LED printhead assembly window. Correct and clean contaminated pins, or replace the appropriate PC cartridge or connector. Problem resolved Replace the 2nd transfer roller. Go to "2nd transfer roller removal" on page 4-24. 2-220 Service Manual