Scanner does not work – Canon PIXMA E474 User Manual
Page 302
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Scanner Does Not Work
Check 1
Make sure that your scanner or printer is turned on.
Check 2
Connect the USB cable to a different USB port on the computer.
Check 3
If the USB cable is connected to a USB hub, remove it from the USB hub and
connect it to a USB port on the computer.
Check 4
With network connection, check the connection status and reconnect as
needed.
Check 5
Restart the computer.
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