You may notice a decline in print quality if the inside of the machine is unclean or if paper is loaded incorrectly. To solve the problem, go to the table below.
Vertical lines
If black vertical streaks appear on the page:
• The drum inside the toner cartridge has probably been scratched. Remove the toner cartridge and install a new one.
If white vertical streaks appear on the page:
• The surface of the LSU part inside the machine may be dirty. Clean the LSU.
Gray background
If the amount of background shading becomes unacceptable:
• Change to a lighter weight paper.
• Check the machine’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.
Toner smear
• Clean the inside of the machine.
• Check the paper type and quality.
• Remove the toner cartridge and install a new one.
Vertical repetitive
If marks repeatedly appear on the printed side of defects the page at even intervals:
• The toner cartridge may be damaged.
If a repetitive mark occurs on the page, print cleaning sheet several times to clean the cartridge;. After the printout, if you still have the same problems, remove the toner cartridge, and install a new one.
• Parts of the machine may have toner on them.
If the defects occur on the back of the page, the problem will likely correct itself after a few more pages.
• The fusing assembly may be damaged. Contact a service representative.
