Oki C822n User Manual page 101

Symptom
Horizontal lines and
spots appear periodically.
Paper feed direction
White area of paper is
lightly stained.
Periphery of letters is
smudged.
The entire paper area
is lightly stained when
printing on envelopes or
coated paper.
Toner comes off when it
is rubbed.
Glossiness is not
uniform.
Point to check
If the interval of lines or spots
is about 94 mm (4 inches), the
image drum (the green tube) is
damaged or dirty.
If the interval of lines or spots
is about 30 mm (1.5 inches),
foreign materials may be
present on the image drum.
If the interval of lines or spots is
about 143 mm, there is damage
to the fuser unit.
The image drum has been
exposed to light.
The paper feed path is dirty.
The paper contains static
electricity.
The paper is too thick.
The toner is low.
The LED heads are dirty.
The paper is unsuitable.
The paper is moist.
The toner may be sticking to
the whole area of the envelope
or coated paper.
The settings of media type and
weight are incorrect.
The paper is recycled.
The media weight setting is
unsuitable.
The settings of media type and
weight are incorrect.
Remedy
Lightly wipe the image drum with
soft tissue paper.
Replace the image drum if it is
damaged.
Open and close the top cover, and
print again.
Change the fuser unit.
Place the image drum back into the
printer and leave it for a few hours.
If that does not solve the problem,
replace the image drum.
Print a few test copies.
Use paper stored in proper
temperature and humidity
conditions.
Use thinner paper.
Replace the toner cartridge.
Wipe the LED heads with soft tissue
paper.
Use recommended paper.
Replace it with new paper.
This is not a malfunction of the
printer.
Coated paper is not recommended.
Press the <ENTER> button
and select [Menus] > [Tray
Configuration] > the paper tray
configuration you are using, and
then select the proper values for
[Media Type] and [Media Weight].
Or, select a heavier weight in [Media
Weight].
Press the <ENTER> button
and select [Menus] > [Tray
Configuration] > the paper tray
configuration you are using, and then
select a heavier weight for [Media
Weight].
Press the <ENTER> button
and select [Menus] > [Tray
Configuration] > the paper tray
configuration you are using, and
then select the proper values for
[Media Type] and [Media Weight].
Or, select a heavier weight in [Media
Weight].
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Other Issues
Reference
page 112
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page 118
3
page 112
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page 53
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page 107
page 122
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page 53
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page 53
page 53
page 53