Sharp MX-7090N, User Manual

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BEFORE USING THE MACHINE ► MAINTENANCE
CLEANING THE LASER UNIT
When the laser unit inside the machine becomes dirty, line patterns (colored lines) may form in the printed image.
Identifying lines (colored lines) caused by a dirty laser unit
• Colored lines always appear in the same place. (The lines are never black.)
• Colored lines appear in parallel with the direction of paper feeding.
• Colored lines appear not only on output from a copier but also on prints from a computer. (The same lines appear on
both copies and print jobs.)
If conditions similar to the above occur, clean the laser unit as explained below.
1
Open the front cover.
2
Take out the cleaning tool for the laser
unit.
The cleaning tool is attached to the front cover of the
machine.
(1) Push the left-hand side of the cleaning
tool to detach it from the hook.
(2) Put it over the hook to place in on the
back side.
(3) Turn the cleaning tool around the boss to
detach it from the right-hand hook.
3
Make sure that the cleaner at the tip of
the cleaning tool is not dirty.
If the cleaner is dirty, remove the cleaner from the cleaning
tool and replace it with a clean one. For more information on
replacing the cleaner, see "
REPLACING THE CLEANER
(page 1-147) ".
(1)
(2)
(3)
Boss
Cleaner