Manual page
S
OLVING
P
ROBLEMS
7.23
7
Vertical lines
If black vertical streaks appear on the page:
• The imaging unit inside the printer has probably been
scratched. Install a new imaging unit.
If white vertical lines appear on the page:
• The surface of the LSU may be dirty. Clean the LSU. See
Color or Black
background
If the amount of background shading becomes unacceptable,
• 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 imaging unit and install a new one. See
Toner smear
• Remove the transfer belt and install a new one. See “Replacing
Vertical repetitive
defects
If marks repeatedly appear on the printed side of the page at
if you still have the same problems, install a new toner
• 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.
Problem
Solution
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