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REGULAR MAINTENANCE
13-2
MFC 4450/OP-US-5.0
WARNING
• Do not use isopropyl alcohol to clean the scanner window or the toner
sensor.
• Do not touch the scanner window with your finger.
• Handle the drum unit carefully as it contains toner. If toner scatters and
your hands or cloths get dirty, immediately wipe or wash it off with cold
water .
WARNING
Just after you have used the MFC,
some internal parts of the MFC are
extremely Hot! When you open the
top cover of the MFC, never touch
the shaded parts shown in the
diagram to the left.
Cleaning the Drum Unit
NOTE: We recommend you place the drum unit on a drop cloth or large piece of
disposable paper to avoid spilling and scattering the toner.
1. Turn the drum unit upside down carefully.
Toner sensor
Electric terminal
Gears
Gears
Scanner window
▲ Inside the MFC
Shaded parts are
HOT!