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14.15 <
Troubleshooting>
Horizontal stripes
If horizontally aligned black streaks or smears
appear:
• The toner cartridge may be installed
improperly. Remove the cartridge and reinsert
it.
• The toner cartridge may be defective. Remove
the toner cartridge and install a new one. See
page 13.5.
• If the problem persists, the machine may
require repair. Contact a service
representative.
Curl
If the printed paper is curled or paper does not
feed into the machine:
• Turn over the stack of paper in the tray. Also
try rotating the paper 180° in the tray.
• Try printing to the rear cover.
An unknown image
repetitively appears
on a next few
sheets or loose
toner, light print, or
contamination
occurs.
Your printer is probably being used at an altitude
of 2,500 m (8,200 ft) or above.
The high altitude may affect the print quality
such as loose toner or light imaging. You can set
this option through Printer Settings Utility or
Printer tab in printer driver's properties. Refer to
the Software Section for details.
Condition Suggested solutions
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Copying problems
Condition Suggested solutions
Copies are too light
or too dark.
Use Darkness to darken or lighten the
background of the copies.
Smears, lines,
marks, or spots
appears on copies.
• If defects are on the original, press Darkness
to lighten the background of your copies.
• If no defects are on the original, clean the scan
unit. See page 13.3.
Copy image is
skewed.
• Ensure that the original is face down on the
scanner glass or face up in the ADF.
• Check that the copy paper is loaded correctly.
Blank copies print
out.
Ensure that the original is face down on the
scanner glass or face up in the ADF.
Image rubs off the
copy easily.
• Replace the paper in the tray with paper from a
new package.
• In high humidity areas, do not leave paper in
the machine for extended periods of time.
Frequent copy
paper jams occur.
• Fan the stack of paper, then turn it over in the
tray. Replace the paper in the tray with a fresh
supply. Check/adjust the paper guides, if
necessary.
• Ensure that the paper is the proper paper
weight. 75 g/m
2
bond paper is recommended.
• Check for copy paper or pieces of copy paper
remaining in the machine after a paper jam has
been cleared.
Toner cartridge
produces fewer
copies than
expected before
running out of
toner.
• Your originals may contain pictures, solids, or
heavy lines. For example, your originals may
be forms, newsletters, books, or other
documents that use more toner.
• The machine may be turned on and off
frequently.
• The scanner lid may be left open while copies
are being made.