Oki MB451wMFP User Manual page 160

Other Issues
Symptom
Printed images are light. The toner cartridge is not installed
Printed images are
partially faded. White
spots and lines appear.
Vertical lines appear.
Horizontal lines and
spots appear
periodically.
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.
Point to check
properly.
The toner is low.
The paper is moist.
The paper is unsuitable.
The paper is unsuitable.
The settings of media type and
width are incorrect.
The paper is recycled.
Yellow and green are used in the
original document.
The paper is too moist or dry.
The image drum is damaged.
The toner is low.
The document glass and paper
feed roller of the ADF are dirty.
If the interval of lines or spots is
about 94 mm (3.7 inches), the
image drum (the green tube) is
damaged or dirty.
If the interval of lines or spots is
about 40 mm (1.6 inches), foreign
materials may be present on the
image drum.
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.
Install the toner cartridge properly.
Replace the toner cartridge.
Use paper stored under proper
temperature and humidity
conditions.
Use supported paper.
Press the <SETTING> key and
select [Paper Setup] > the paper
tray you are using, and then select
the proper values for [Media
Type] and [Media Weight]. Or,
select the thicker values for
[Media Weight].
Press the <SETTING> key and
select [Paper Setup] > the paper
tray you are using, and then select
the thicker values for [Media
Weight].
If the original data was
transmitted, ask the sender to
change the color of the original
document to black and white.
Use paper stored under proper
temperature and humidity
conditions.
Replace the image drum.
Replace the toner cartridge.
Clean the document glass and
paper feed roller.
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.
Place the image drum back into
the machine and leave it for a few
hours. If it does not solve the
problem, replace the image drum.
Print a few test copies.
Use paper stored under 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
machine.
Coated paper is not recommended.
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Remedy Reference
P.168
P.168
P.31
-
P.36
P.36
-
P.31
P.169
P.168
P.172
P.169
-
P.169
-
P.31
-
P.168
P.174
-
P.32
-