Specifications

8.15 Repetitive Marks
8.15 Repetitive Marks
When surface damage happens to one of the rollers, a repetitive
mark is produced on the test page. The color of the marks might be
black or white and the shape is a clearly defined spot or hairline.
Use Figure 8–2 to measure the distance between the marks and to
identify the defective roller.
Figure 8–2 Roller Defect Ruler
First occurrence of Print Defect
Primary Charge Roller 1.5 in (38 mm)
Developer Roller 2 in (51 mm)
Transfer Roller 2 1/8 in (54 mm)
Upper or Lower Fusing Roller 2 1/2 in (63 mm)
EP–S Photosensitive Print Drum 3 11/16 in (94 mm)
DSG-000634
8–12 FIPs For Fixing Image Defects