Oki C834DN - Page 105

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Other Issues
3
3. Troubleshooting
Symptom Point to check Remedy Reference
Printed images are
partially faded.
Spots and lines
appear.
The paper is too moist or dry. Use paper stored in proper
temperature and humidity
conditions.
page 57
[Paper Black Setting] or [Paper
Color Setting] is improperly
congured.
Press the <ENTER> button and
select [Menus] > [System Adjust],
and then change the value for
[Paper Black Setting] or [Paper
Color Setting].
-
[Trans. Black Setting] or [Trans.
Color Setting] is improperly
congured.
Press the <ENTER> button and
select [Menus] > [System Adjust],
and then change the value
for [Trans. Black Setting] or
[Trans. Color Setting].
-
Horizontal lines
and spots appear
periodically.
If the interval of lines or spots is
about 94 mm (4 inches), the image
drum (the green tube) is damaged
or dirty.
Lightly wipe the image drum with
soft tissue paper.
Replace the image drum if it is
damaged.
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If the interval of lines or spots is
about 30 mm (1.5 inches), foreign
materials may be present on the
image drum.
Open and close the top cover, and
print again.
-
If the interval of lines or spots is
about 143 mm, there is damage to
the fuser unit.
Change the fuser unit. page 121
The image drum has been exposed
to light.
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.
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The paper feed path is dirty. Print a few test copies. -
White area of paper
is lightly stained.
The paper contains static electricity. Use paper stored in proper
temperature and humidity
conditions.
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The paper is too thick. Use thinner paper. -
The toner is low. Replace the toner cartridge. page 111
Periphery of letters
is smudged.
The LED heads are dirty. Wipe the LED heads with soft tissue
paper.
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The paper is unsuitable. Use recommended paper. -
The paper is moist. Replace it with new paper. page 57
The entire paper
area is lightly
stained when
printing on
envelopes or coated
paper.
The toner may be sticking to the
whole area of the envelope or coated
paper.
This is not a malfunction of the
printer.
Coated paper is not recommended.
-
Toner comes off
when it is rubbed.
The settings of media type and
weight are incorrect.
Press the <ENTER> button
and select [Menus] > [Tray
Conguration] > the paper tray
conguration 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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The paper is recycled.
The media weight setting is
unsuitable.
Press the <ENTER> button
and select [Menus] > [Tray
Conguration] > the paper tray
conguration you are using, and then
select a heavier weight for [Media
Weight].
page 57