Canon DR-5020 - Manual (Page 83)

83
5
5.1 Daily Cleaning
Cleaning the Scanning Glasses and Rollers
A probable cause of stripes appearing in scanned images or dirt appearing on
scanned documents is dirt on the scanning glasses or rollers. Clean scanning
glasses and rollers regularly.
1
Press the power switch to turn the scanner OFF, and unplug the
power cord from the power outlet.
2
Remove the removable tray or document eject support plate on the
document eject tray if it is installed. Close the document eject tray
extension if it is open.
3
Open the upper unit.
Press the open/close button and raise the top of the upper unit gently
until it locks in the open position.