Oki C7350 Series User Manual page 162

Fading in patches
POSSIBLE CAUSE
The paper is moist.
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
Store paper within specified temperature and
humidity levels.
REMEDY
Replace image drum.
Change toner cartridge.
If the lines or spots occur at intervals of
approximately 44 - 94 mm, the image drum
(green tube) is damaged or dirty. If damaged,
replace the image drum cartridge. 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 unit.
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.
REMEDY
Store paper within specified temperature and
humidity levels.
Use recommended paper.
Change toner cartridge.
C7350 User's Guide> 162