HP 8000dn Service Manual - Page 427

Table 7-17. Misshapen Characters, Voids (continued) Possible Cause Recommended Action 2. Printing on wrong side of paper. The Turn EconoMode off. Check for the arrow label on the ream of paper indicates which on the paper wrapper. Be sure paper is side to print on. The different surface loaded with the arrow pointing up in Tray 1 properties of some papers may cause or down in Trays 2, 3, 4, and 5. problems if loaded wrong side up. 3. Paper surface is too smooth for proper toner adhesion. Turn EconoMode off. Use paper with correct finish (smoothness) (see HP LaserJet Printer Family Paper Specifications Guide). 4. Transparencies are bad. Transparencies can have this problem because they are not designed for proper toner adhesion. Turn EconoMode off. Use Hewlett-Packard approved transparencies (see HP LaserJet Printer Family Paper Specifications Guide). 5. Transfer Roller is bad. If the Transfer Roller has finger oils on its surface, is dirty, or is worn-out, this problem can result. Turn EconoMode off. Clean the Transfer Roller using a dry, lint-free cloth. DO NOT touch the Transfer Roller with your fingers. If the problem persists, replace the Transfer Roller Assembly. See "Transfer Roller Assembly" on page 219 for instructions. 6. Laser/Scanner Assembly is bad. Replace the Laser/Scanner Assembly. See "Laser/Scanner Assembly" on page 189 for instructions. Table 7-18. Faulty Registration Possible Cause Recommended Action 1. Paper tray is overloaded. If the tray is overloaded, the Pickup Rollers may not pick correctly. Reload proper amount of paper squarely in the tray. Review paper loading with the customer. 2. Paper guide on the paper tray is incorrectly adjusted. If the guide is pushing too tightly against the paper, it may be delayed in being pulled into the printer. If the guide is too loose, it may cause image skewing. Make sure that the paper guide is adjusted for the correct paper size and is locked into position. EN Image Quality 403