Oki C650 - Dots and Horizontal Streaks Appear in the Paper Feeding Direction Periodically; White Area Is Lightly Stained

Troubleshooting
- 367 -
Dots and horizontal streaks appear in the paper feeding direction
periodically
Cause Solution Reference
If dots or streaks of a specific color
appear at intervals of about 75
mm, the green tube of the image
drum is scratched or dirty.
Please replace the image drum. Replacing the
image
drum(P.303)
If dots or streaks of various colors
appear at intervals of about 94
mm, the fuser unit is scratched or
dirty.
Replace the fuser unit. Replacing the
fuser
unit(P.310)
If the intervals are about 38 mm,
parts inside the belt unit are
broken.
Replace the belt unit. Replacing the
belt unit(P.308)
If the intervals are about 34 mm or
43 mm, parts in the image drum
are damaged.
Please replace the image drum. Replacing the
image
drum(P.303)
If the intervals are about 30 mm,
there are foreign objects in the
image drum.
Open and close the front cover and print again.
If the problem persists, replace the image drum.
Replacing the
image
drum(P.303)
If the intervals are about 31 mm,
the resist roller is dirty.
Open the front cover and wipe the resist roller with soft
tissue paper.
Cleaning the
resist
roller(P.320)
The image drum has been
exposed to light.
Install the image drum back to the printer, and leave the
printer idle for a few hours. If the problem persists, replace
the image drum.
Replacing the
image
drum(P.303)
Dirt has deposited on the paper
transfer path.
Test print a few pages. Printing the
menu map
(configuration)(
P.86)
White area is lightly stained
Cause
Solution
Reference
Static electricity occurs to the
paper.
Use the paper stored at appropriate temperature and
humidity.
Storing
paper(P.83)
Thick paper is used. Use thinner paper. Loading
paper(P.72)