Canon SCANFRONT 300 Instructions Manual page 176

Cannot turn on the power
The scanner does not turn ON
when the power switch is
pressed.
Hardware
The AC adapter is not connected properly or the power plug is not
Cause
inserted.
Check the connections of the AC adapter and power plug. If the
Solution
problem is not resolved after checking the connections, contact your
local authorized Canon dealer.
Cause
A USB memory device in inserted in the scanner.
Solution Remove the USB memory device, and restart the scanner.
10-5
Chapter 10 Troubleshooting