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REGULAR MAINTENANCE
14-3
MFC 4550/6550MC/7550MC
OP-US-5.0
2. Clean the primary corona wire inside the drum unit by gently sliding the tab from
right to left several times.
CAUSION
If you do not position the tab at the home position, printed pages may have
vertical stripes.
3. Return the tab to the home position (▲ mark position) before reinstalling the drum
unit.
4. Install the drum unit into the MFC.
See the section “Replacing the Drum Unit” on page 13-5~7.
5. Close the top cover.
6
. Plug in the power cord and turn on the power switch.
Packing and Shipping the Machine
Whenever you transport the MFC, use the packing materials that came with your
machine. Also, follow the steps below to pack the MFC or the machine may be
damaged, which will void the MFC’s warranty.
1. Turn off the power switch and unplug the MFC from the AC outlet.
2. Open the top cover.
3. Remove the drum unit assembly. To remove the drum unit, please refer to the
previous section (See page 13-5~7.)
Home Position (▲)
Tab
Corona wire