User Manual

Solving other problems | 182
Copying problems
Horizontal stripes
If horizontally aligned black streaks or smears appear:
• The imaging unit may be installed improperly. Remove the imaging
unit and reinsert it.
• The imaging unit may be defective. Remove the imaging unit and
install a new one.
If the problem persists, the machine may require repairing. Contact a
service representative.
Curl
If the printed paper is curled or paper does not feed into the machine:
• Turn the stack of paper over in the tray. Also try rotating the paper
180° in the tray.
• Change the printer’s paper option and try again. Go to Printing
Preferences, click the Paper tab, and set type to Light 60-69g (see
"Opening printing preferences" on page 76).
• An unknown
image
repetitively
appears on a few
sheets
• Loose toner
• Light print or
contamination
occurs
Your machine is probably being used at an altitude of 1,000 m (3,281 ft)
or above.
The high altitude may affect the print quality, such as loose toner or light
imaging. Change the altitude setting for your machine (see "Altitude
adjustment" on page 37).
Condition Suggested solutions
Copies are too light
or too dark.
Adjust the darkness in copy feature to lighten or darken the
backgrounds of copies (see "Changing the settings for each copy" on
page 88).
Smears, lines, marks,
or spots appear on
copies.
• If the defects are on the original, adjust darkness in copy feature to
lighten the background of your copies.
• Adjust background in copy setup removes the background color
(see "Adjust Bkgd." on page 122).
• If there are no defects on the original, clean the scan unit (see
"Cleaning the scan unit" on page 152).
Copy image is
skewed.
• Ensure that the original is aligned with the registration guide.
• The transfer roller may be dirty. Clean the inside of your machine
(see "Cleaning the machine" on page 149).
Condition Suggested solutions