Condition Example Suggested solutions
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 printer, so the transfer roller
may be dirty. Clean the inside of your printer.
● The paper path may need cleaning. Clean the inside of your
printer.
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 cartridge inside the printer has
probably been scratched. Remove the cartridge and install a
new one.
If white vertical streaks appear on the page:
● The surface of the LSU part inside the printer may be dirty.
Clean the inside of your printer. If cleaning does not correct
the problem, contact a service representative.
Black or color background ● 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.
● Thoroughly redistribute the toner.
Toner smear ● Clean the inside of the printer.
● Check the paper type and quality.
● Remove the toner cartridge and install a new one.
Vertical repetitive defects If marks repeatedly appear on the printed side of the page at even
intervals:
● The toner cartridge may be damaged. If you still have the
same problem, remove the toner cartridge and, install a new
one.
● Parts of the printer 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.
150 Chapter 9 Troubleshooting ENWW
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