Oki ES4192dn User Manual - page 612
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1228
Vertical White Lines Appear
Cause
Solution
Reference
The LED head is dirty.
Wipe the LED head with a soft tissue paper.
The toner is low.
Replace the toner cartridge.
There may be foreign objects in the image
drum.
Replace the image drum.
The lightproof film of the image drum is dirty.
Wipe the lightproof film with a soft tissue
paper.
-
The image drum is not installed properly.
Install the image drum properly.
The ADF document glass is dirty.
Clean the ADF document glass.
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