White Streaks Appear In The Vertical Direction; Horizontal White Streaks Appear In The Paper Feed Direction Periodically - Oki PRO330S User Manual

White streaks appear in the vertical direction

Possible causes
The LED head is dirty.
The light-shielding film of the
image drum is dirty.
The image drum is not
installed correctly.
A foreign object is stuck in
the image drum.
Horizontal white streaks appear in the paper feed
direction periodically
Possible causes
The image drum is not
installed correctly.
The image drum is dirty.
The image drum is dirty.
Solution
Wipe the LED head with soft
tissue paper.
Wipe the light-shielding film
with soft tissue paper.
Please install the image drum
correctly.
Please replace the image drum.
Solution
Please install the image drum
correctly.
Turn on the drum cleaning.
However, when it is turned on,
the service life of the image
drum will be shortened.
Please replace the image drum.
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Reference
Cleaning the LED head
Replacing the image drum
Replacing the image drum
Replacing the image drum
Reference
Replacing the image drum
Cleaning the image drum
before printing
Replacing the image drum