388 Troubleshooting ENWW
Repetitive defects troubleshooting
Defects on printer rollers can cause image defects to appear at regular intervals on the page. Use
the repetitive defects ruler, see the figure Repetitive defects ruler following the table on the next
page, to measure the distance between defects that recur on a page. Use Repetitive defect cause
table, below, to determine which roller is causing the defect. To resolve the problem, try cleaning
the roller first. If the roller is still dirty after cleaning or if it is damaged, replace it.
CAUTION Do not use solvents or oils to clean rollers. Instead, rub the roller with lint-free paper. If dirt is difficult
to remove, rub the roller with lint-free paper dampened with rubbing alcohol.
Note Defects on the Tray 2 pickup roller or the multipurpose tray pickup roller do not cause a repetitive
defect. Defects on these rollers cause a defect to appear only on the leading edge of the image.
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