Brother DCP 9040CN - Manual (Page 5)

Safety Precautions
3
To prevent injuries, DO NOT put your fingers in the area
shown in the illustrations.
DO NOT use a vacuum cleaner to clean up scattered toner. Doing this might cause the toner dust to ignite inside the vacuum
cleaner, potentially starting a fire. Please carefully clean the toner dust with a dry, lint-free cloth and dispose of it according
to local regulations.
If moving your machine, use the handholds provided. First
making sure to disconnect any cables. To prevent injuries
when moving or lifting this machine, make sure to use at least
two people.
DO NOT use flammable substances or any type of spray to
clean the inside or outside of the machine. Doing this may
cause a fire or electrical shock. Refer to the User's Guide for
how to clean the machine.