HP CM6030 Service Manual - Page 622

Problem Cause Solution Vertical streaks or bands appear on the Scratches are present on the page. circumference of the photosensitive drum. Replace the process cartridge of the color that matches the defect. AaBbCc AaBbCc AaBbCc AaBbCc AaBbCc Scratches are present on the circumference of the fuser roller. Scratches are present on the circumference of the ITB. The ITB drive roller is deformed or has deteriorated. Replace the fuser. Replace the ITB unit. The ITB cleaning mechanism is malfunctioning. Vertical white lines appear in a particular The laser beam window is dirty. color. Clean the window and remove any foreign substances. Scratches are present on the circumference of the developing cylinder or photosensitive drum. Replace the imaging drum of the color that matches the defect. The laser/scanner-unit mirror is dirty. Replace the laser/scanner unit. Vertical white lines appear in all colors. Vertical scratches are present on the Replace the fuser. fuser roller. Scratches are present on the circumference of the ITB. Replace the ITB. Horizontal lines appear on the page. A horizontal white line appears on the page. Horizontal scratches are present on Replace the imaging drum of the color that the photosensitive drum. matches the defect. Horizontal scratches are present on Replace the fuser. the fuser roller. Horizontal scratches are present on Replace the imaging drum of the color that the photosensitive drum. matches the defect. Scratches are present on the circumference of the ITB. Replace the ITB. 576 Chapter 7 Solve problems ENWW