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Solving other problems | 179
Black or color
background
If the amount of background shading becomes unacceptable:
• Change to a lighter weight paper.
• Check the environmental conditions: very dry conditions or a high
level of humidity (higher than 80% RH) can increase the amount of
background shading.
• Remove the old imaging unit and install a new one.
• Thoroughly redistribute the toner (see "Redistributing toner" on page
142).
Toner smear • Clean the inside of the machine (see "Cleaning the machine" on page
149).
• Check the paper type and quality.
• Remove the imaging unit and install a new one.
Vertical repetitive
defects
If marks repeatedly appear on the printed side of the page at even
intervals:
The imaging unit may be damaged. If you still have the same problem,
remove the imaging unit and, install a new one.
• Parts of the machine may have toner on them. If the defects occur on
the back of the page, the problem will likely correct itself after a few
more pages.
• The fusing assembly may be damaged. Contact a service
representative.
Background
scatter
Background scatter results from bits of toner randomly distributed on
the printed page.
• The paper may be too damp. Try printing with a different batch of
paper. Do not open packages of paper until necessary so that the paper
does not absorb too much moisture.
If background scatter covers the entire surface area of a printed page,
adjust the print resolution through your software application or in
Printing Preferences (see "Opening printing preferences" on page 76).
Ensure the correct paper type is selected. For example: If Thicker Paper
is selected, but Plain Paper actually used, an overcharging can occur
causing this copy quality problem.
• If you are using a new toner cartridge, redistribute the toner first (see
"Redistributing toner" on page 142).
Condition Suggested solutions
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  • Skrivaren stannar och Displayen visar Replace Install Waste Toner Tank
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