User`s guide

Printing quality problems
263
6. Troubleshooting
Toner specks The paper may not meet specifications; for example, the paper may be too moist or rough.
The transfer roller may be dirty. Clean the inside of your machine (see "Cleaning the machine" on page 75).
The paper path may need cleaning. Contact a service representative (see "Cleaning the machine" on page 75).
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 Thick (see "Opening
printing preferences" on page 50).
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 75).
The paper path may need cleaning. Clean the inside of your machine (see "Cleaning the machine" on page 75).
If these steps do not correct the problem, contact a service representative.
Condition Suggested solutions
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Printing quality problems
264
6. Troubleshooting
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 "Toner cartridge" on page 71).
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
75). 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 old toner cartridge and install a new one (see "Toner cartridge" on page 71).
Thoroughly redistribute the toner (see "Redistributing toner" on page 69).
Toner smear Clean the inside of the machine (see "Cleaning the machine" on page 75).
Check the paper type and quality.
Remove the toner cartridge and install a new one (see "Toner cartridge" on page 71).
Condition Suggested solutions