Scanner Does Not Work - Canon LiDE 300 Online Manual

Scanner Does Not Work

Connect the USB cable to a different USB port on the computer.
Check 1
If the USB cable is connected to a USB hub, remove it from the USB hub and
Check 2
connect it to a USB port on the computer.
Restart the computer.
Check 3
Your scanner may be locked.
Check 4
If IJ Scan Utility Lite or the application is running, exit it. Slide the scanner lock switch to the release position
( ), then reconnect the USB cable.
Refer to the printed manual: Getting Started for how to unlock the scanner.
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