Canon DR-3080CII - Manual (Page 56)

54 Using the Scanner
Regular Maintenance
Clean the scanner on a regular basis as described below in order to maintain
peak scanning quality.
CAUTION
For safety's sake, always turn the scanner off and unplug the
power cord before cleaning the scanner.
Cleaning the Scanner
To clean the exterior of the scanner, dampen a cloth with water or a mild
detergent, wring the cloth out thoroughly, and then wipe the dirt away. Then
use a dry, soft cloth to wipe away any moisture.
CAUTION
Never use paint thinner, alcohol, or other organic solvents to
clean the scanner. Such solvents can damage or discolor the
exterior of the scanner. They also create a risk of fire and electric
shock.