Canon Mk2500 User Manual page 10

Clean the AC adapter plug periodically. If dust, dirt, soot, etc., is
allowed to accumulate on the plug, the dust could absorb moisture,
creating an insulation fault that could cause a fire.
If the unit begins to smoke or emit an unusual odor, turn the power
switch off immediately, unplug the AC adapter plug from the power
outlet, and then contact your nearest dealer. Continuing to use the unit
after an abnormal condition has developed could result in fire or electric
shock.
Do not connect this unit to a multi-outlet adapter or extension cord.
Doing so could result in fire or electric shock.
Do not power on with the power cord tied. It can cause fire or electrical
shock.
Do not use flammable sprays in the vicinity of this unit. The spray
could come into contact with internal components of the unit, resulting
in a fire or electric shock.
If it is necessary to wipe dirt off the unit, use gauze that has been
dampened with water and then thoroughly wrung out. Never use
flammable solvents such as alcohol, benzene or paint thinner. The
solvents could come into contact with internal electric components and
cause a fire or electric shock.
Before cleaning the unit, turn the power off and unplug the AC adapter
from the power outlet. Injury could result if the power switch is
inadvertently left in the "ON" position and the unit is put into operation.