Epson Expression 1680 Reference Manual page 123

1. If an exclamation mark (!) appears beside EPSON
Expression1680 under Imaging Device, click EPSON
Expression1680. Then click Remove.
2. The Confirm Device Removal dialog box appears. Click OK.
3. Click Close to close the System Properties window.
4. Make sure your scanner is on, then restart your computer.
5. When the following dialog box appears, insert the scanner
software CD-ROM in the CD-ROM drive, then click OK.
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Maintenance and Troubleshooting