T
ROUBLESHOOTING
8.19
8
Vertical lines
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 1.10.
Gray background
If the amount of background shading becomes unacceptable:
• Change to a lighter weight pages. See “Paper Specifications”
on page A.6.
• 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. See
“Installing the Toner Cartridge” on page 1.10.
Toner smear
• Clean the inside of the machine. See page 7.3.
• Check the paper type and quality. See “Paper Specifications”
on page A.6.
•Remove the toner cartridge and install a new one. See
“Installing the Toner Cartridge” on page 1.10.
Vertical repetitive
defects
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 7.10.
After the printout, if you still have the same problems, install
a new toner cartridge. See “Installing the Toner Cartridge” on
page 1.10.
• 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.
Condition Suggested solutions
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