Oki C 6000n User Manual page 151

Lines, Black (Vertical)
Possible
cause
Image drum is
damaged.
Toner is low.
Periodic black
lateral lines or
spots.
The image drum
has been
exposed to
light.
Lines, White (Vertical)
Remedy
Clean LED head with lens cleaner or soft tissue.
Change toner cartridge.
Change image drum.
Remedy
Replace image drum. See "Replace an Image Drum" on
page 79.
Change toner cartridge. See "Replace a Toner
Cartridge" on page 73.
If the lines or spots occur at intervals of approximately
44 to 94 mm
The green surface of the image drum is damaged or
dirty. If damaged, replace the image drum cartridge.
See "Replace an Image Drum" on page 79. If dirty,
wipe the image drum gently with soft tissue. If this
does not work, replace the image drum. See "Replace
an Image Drum" on page 79.
113 mm
The fuser roller is damaged. Change the fuser. See
"Replace the Fuser" on page 87.
Remove the image drum from the printer and store it in
a dark place for several hours. If this does not work,
replace the image drum. See "Replace an Image
Drum" on page 79.
C6000n User's Guide
151