There are many possible reasons why a scanner may not be scanning documents. The most common problem that can cause a scanner to not scan is a connection issue between the scanner and your computer. Ensure that the scanner is properly connected to your computer via USB cable or another form of connection. If the connection appears to be working, try restarting the scanner.
If restarting the scanner does not work, the problem could be related to the drivers. Make sure you have the latest version of the drivers installed on your computer. If necessary, download the latest driver package from the manufacturer’s website and install them.
Another potential issue that could explain why your scanner is not scanning is a conflict with other programs running in the background. Disable any excessive programs running in the background and see if this resolves the issue.
Sometimes, the scanner simply needs some maintenance. Make sure you clean the scanner glass and document feeder regularly to avoid dust or paper build-up. Check the scanner settings and make sure they are set correctly. Also, check any indicator lights on the scanner that may indicate an error.
Finally, if all of the above steps fail, the scanner may be defective. Consult your user manual for instructions on how to troubleshoot the scanner and contact the manufacturer for more help.