Dirt on front of paper
Table 7-27. Causes for dirt on the front of the paper
Causes for dirt on the front of the paper
Cause
Solution
Rollers are dirty. See Table 7-38. Repetitive defect spacing for
information on identifying the roller(s) that might
be dirty. Clean the indicated roller. If the roller is
still dirty after cleaning, replace the appropriate
roller, cartridge, or assembly.
Pickup roller is dirty. Clean the roller. If is still dirty after cleaning,
replace the pickup roller assembly.
Poor contact in the attaching bias contacts
between the ETB and the high-voltage PCB.
Clean the contacts. Replace them if they are still
dirty or are damaged.
High-voltage PCB is defective. Replace the high-voltage PCB.
DC controller PCB is defective. Replace the DC controller PCB. Calibrate the
printer after replacing the DC controller. See
Calibrate now.
Vertical lines
Table 7-28. Causes for vertical lines
Causes for vertical lines
Cause
Solution
Photosensitive drum has grooves going around
the circumference.
Replace the cartridge for the color of the vertical
lines.
Fuser sleeve has grooves around the
circumference.
Replace the fuser.
White vertical lines
Table 7-29. Causes for white vertical lines
Causes for white vertical lines
Cause
Solution
Developing cylinder has grooves going around
the circumference.
Replace the print cartridge for the color in which
the white lines appear.
ENWW Image defects 361
To Next Page
Loading...