Print-Quality ProblemsPhaser™ 4500 Laser Printer4-26Horizontal Line DeletionsThere are localized printdeletions appearing as bandsrunning across the paper.1. The paper may be defectivewith creases, folds, etc.2. The print cartridge may bedefective or at the end of itslife.3. The transfer roller may bedefective.1. Replace the paper.2. Replace the print cartridge.3. Replace the transfer roller (in themaintenance kit).Vertical Dark StreaksThere are black lines runningacross the print.1. The print cartridge may bedefective or at the end of itslife.2. The paper path may becontaminated with toner.3. The fuser may be defective.1. Replace the print cartridge.2. Print several blank sheets ofpaper to remove the toneraccumulations.3. Replace the fuser (in themaintenance kit).Repetitive Horizontal DarkStreaksThere are black lines runningacross the page. For moreinformation, see "RepeatingDefects" on page 4-29.1. The paper path may becontaminated with toner.2. The print cartridge may bedefective or at the end of itslife.3. The fuser may be defective.4. The transfer roller may bedefective.1. Print several blank sheets ofpaper to remove the toneraccumulations.2. Replace the print cartridge.3. Replace the fuser (in themaintenance kit).4. Replace the transfer roller (in themaintenance kit).Diagnosing Print-Quality Problems (Continued)Problem Causes Solutions
