Vertical lines
Gray background
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. See "Paper Specifications" on page 200.
The paper lot is bad. The manufacturing process can cause some areas to reject toner. Try a different kind or brand of paper.
The toner cartridge may be defective. Vertical repetitive defects on the next page.
If these steps do not correct the problems, contact a service representative.
If black vertical streaks appear on the page, the drum inside the toner cartridge has probably been scratched. Install a new toner cartridge. See "Installing the Toner Cartridge" on page 23.
If the amount of background shading becomes unacceptable:
Change to lighter weight pages. See "Paper Specifications" on page 200.
Check the printer's environment; very dry (low humidity) or high humidity (higher than 80% RH) conditions can increase the amount of background shading.
Remove the old toner cartridge and install a new one. See "Installing the Toner Cartridge" on page 23.
Toner smear
Vertical repetitive defects
Background scatter
Clean the inside of the
Remove the toner cartridge and install a new one. See "Installing the Toner Cartridge" on page 23.
If marks repeatedly appear on the printed side of the page at even intervals:
The toner cartridge may be damaged. If a repetitive mark occurs on the page, print a cleaning sheet several times to clean the cartridge; see "Cleaning the Drum" on page 159. After the printout, if you still have the same problems, install a new toner cartridge. See "Installing the Toner Cartridge" on page 23.
Parts of the
The fusing assembly may be damaged. Contact a service representative.
Background scatter results from bits of toner distributed on the printed