Table 7-16. Contamination on Back Possible Cause Action Contamination inside printer (Tray Separation Roller, Feed Roller, Transfer Roller, Fuser, Toner Cartridge). 1. Print at least 10 pages to see if the problem goes away. 2. Print a cleaning page (page 4-4). Identify and clean the contaminated part according to the “Repetitive Defect Ruler” on page 7-73. If contamination cannot be removed, replace the contaminated part. 3. Check for Toner leaks. Paper does not meet printer specifications or is stored improperly. 1. Print a few more pages to see if the problem corrects itself. 2. Turn over the stack of paper in the tray. Also try rotating the paper 180°. 3.
Check the paper (or other print media) type and quality. Replace the paper, and advise the customer to use the recommended paper and store it properly. Troubleshooting the Printing System 7-63