Xerox 8500DN Service Manual - Page 220

Print-Quality Troubleshooting Scratches or Marks Troubleshooting Procedure Step Questions and Actions Yes No 2 1. Check the Drum Maintenance Kit. If the Complete. defect is a thin line that is glossier than the surrounding area, it may be due to a defect on the maintenance kit wiper blade. 2. Clean the wiper blade or replace the Drum Maintenance Kit. Did this correct the problem? Go to Step 3. 3 Using transparency media, print from Tray 1 Go to Step 5. Go to Step 4. to see if the scratch appears. Is there a visible scratch? NOTE To determine where the scratch is originating, place a small drop of water on the scratch on the transparency. If the scratch disappears, the scratch is on that side. If the scratch does not disappear, test the other side. This can help to determine where the problem is originating. 4 1. If there is no scratching on the Complete. transparency, the defect occurred during pick or early transport from Tray 2, 3, or 4. 2. Change the paper pick guide, Front Door, or Drum Maintenance Kit. Did this correct the problem? Go to Step 5. 5 A scratch or smear can be caused by debris Complete. build-up on the Preheater's surface. Run Remove Print Smears. Did this correct the problem? Go to Step 6. 6 1. Force a sheet of thick 65- to 80-lb. paper Complete. through the Preheater to "buff" the Preheater heating surfaces. 2. With the leading and trailing ends of the sheet of paper extending from the entry and exit of the Preheater, gently pull the sheet of paper back and forth several times and then remove the paper. Be careful of the sensor flags. Did this correct the problem? Go to Step 7. 7 Inspect all paper guides for nicks, cuts, or Clean or replace any defective debris. paper guide(s). 5-14 Phaser 8400/8500/8550/8560 Color Printer Service Manual