Oki C5400 User Manual page 135

Longitudinal black stripes
Possible cause
Image drum is
damaged.
Toner is low.
Periodic black lateral
lines or spots.
The image drum has
been exposed to
light.
Faint shading on unprinted sections
Possible cause
Paper has been
affected by static
electricity.
Paper is too thick.
Toner is low.
Remedy
Replace image drum (see "Image Drum
Replacement" on page 79).
Change toner cartridge (see "Toner Cartridge
Replacement" on page 72).
• If the lines or spots occur at intervals of
approximately 44 - 94 mm, the green surface of
the image drum is damaged or dirty. If damaged,
replace the image drum cartridge (see "Image
Drum Replacement" on page 79). If dirty, wipe the
image drum gently with soft tissue. If this does not
work, replace the image drum.
• If the lines or spots occur at intervals of
approximately 113 mm, the fuser roller is
damaged. Change the fuser (see "Fuser
Replacement" on page 93).
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 "Image Drum
Replacement" on page 79).
Remedy
Store paper within specified temperature and
humidity levels (see "Specifications" on
page 141).
Use recommended paper (see "Media
Recommendations" on page 10).
Replace toner cartridge (see "Toner Cartridge
Replacement" on page 72).
Troubleshooting • 133