Owners manual

177
Chapter 9 Troubleshooting
Hardware
Cannot turn on the power
Cause
The AC adapter is not connected properly or the power plug is not
inserted.
Solution
Check the connections of the AC adapter and power plug. If the
problem is not resolved after checking the connections, contact your
local authorized Canon dealer.
The scanner does not turn ON
when the power switch is
pressed.
Cause A USB memory device in inserted in the scanner.
Solution Remove the USB memory device, and restart the scanner.
An "invalid password" error
message appears even when
the correct password is entered.
Cause
The date and time settings on the computer and ScanFront 400 do not
match.
Solution
Match the date and time settings on the computer and ScanFront 400. If
there is a discrepancy of 2 minutes or more when the date and time
settings on the computer and ScanFront are converted to Greenwich
Mean Time, an "invalid password" error message will appear.