User Guide

Solving other problems | 157
Dropouts
If faded areas, generally rounded, occur randomly on the page:
• A single sheet of paper may be defective. Try reprinting the job.
• The moisture content of the paper is uneven or the paper has moist
spots on its surface. Try a different brand of paper.
• The paper lot is bad. The manufacturing processes can cause some areas
to reject toner. Try a different kind or brand of paper.
• Change the printer option and try again. Go to Printing Preferences,
click the Paper tab, and set type to Heavy 90-120 g (see "Opening
printing preferences" on page 67).
If these steps do not correct the problem, contact a service representative.
White Spots
If white spots appear on the page:
• The paper is too rough and a lot of dirt from paper falls to the inner
components within the machine, so the transfer roller may be dirty.
Clean the inside of your machine (see "Cleaning the machine" on page
133).
• The paper path may need cleaning. Clean the inside of your machine
(see "Cleaning the machine" on page 133).
If these steps do not correct the problem, contact a service representative.
Vertical lines
If black vertical streaks appear on the page:
• The surface (drum part) of the toner cartridge inside the machine has
probably been scratched. Remove the toner cartridge and install a new
one (see "Replacing the toner cartridge" on page 129).
If white vertical streaks appear on the page:
• The surface of the LSU part inside the machine may be dirty. Clean the
inside of your machine (see "Cleaning the machine" on page 133). If
these steps do not correct the problem, contact a service representative.
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 toner cartridge and install a new one (see "Replacing the
toner cartridge" on page 129).
• Thoroughly redistribute the toner (see "Redistributing toner" on page
128).
Toner smear • Clean the inside of the machine (see "Cleaning the machine" on page
133).
• Check the paper type and quality.
• Remove the toner cartridge and install a new one (see "Replacing the
toner cartridge" on page 129).
Condition Suggested solutions