Oki C911dn User Manual page 53

Symptom
The front or rear edge of the
paper is dirty.
Paper feeding direction
Image disturbance occurs to
the printed portion.
Stripes or dots appear
periodically in horizontal
direction.
Paper feeding direction
Portion of white ground is
lightly stained.
Border of characters is blurred. LED head is unclean.
When printing postcards,
envelopes, or coated papers,
printing will be thinly stained
overall.
Cause
The transfer roller is dirty.
The transfer roller unit or the
paper transfer path is dirty.
The speed of the fuser unit is
incorrect.
In the case of cycle length of
about 125 mm, image drum
may be unclean or there may
be dents on it.
In the case of cycle length of
about 38 mm, there is dirt
inside the image drum.
In the case of cycle length of
about 150 mm, there are dents
on the fuser unit.
Image drum is exposed to light. Return the image drum inside
Dirt has deposited on the paper
transfer path.
Paper has static electricity.
Thick paper is used.
Low toner.
Paper not supported.
Paper is moist.
Printing of envelopes and
coated papers will result in
toner deposit overall.
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Troubleshooting
Run [Print Adjust] > [Transfer
Roller Cleaning] on the control
panel.
Wipe the transfer roller unit and
the paper transfer path with a
soft tissue paper.
Feed five sheets or more of plain
paper of 355.6 mm or above in
length (larger than Legal14 but
including A3 size).
Wipe it lightly with a soft tissue
paper.
If there are dents, replace the
image drum.
Open and close the toner
replacement cover, and repeat
the initial operation.
Replace the fuser unit.
the printer, and do not use the
printer for a few hours. If it
does not rectify even after that,
replace the image drum.
Print few pages as test copies.
Use paper stored at appropriate
temperature and humidity.
Use thinner paper.
Replace the toner cartridge.
Wipe it with a soft tissue paper.
Use recommended paper.
Replace with a new paper.
Device has not broken down.
Do not use coated paper to the
extent possible.
Printing Troubles
Reference
pages
Advanced
1
page 96
page 58
2
page 66
Basic
page 75
page 66
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Basic
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Basic
page 87
Basic
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