Avision AV1860 (DL-1101S/DL-1103S) - Manual (Page 14)

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2.3.2 Turning on the Power
Press the Power Switch button on the front panel, the Power
LED will flash. When it is finished and ready to scan, the
LED indicator will stop flashing and become steadily on. To
turn off the scanner, press the Power Switch button for
about 3 seconds, the Power LED will be off.
2.3.3 Installing the Scanner Driver
1. Place the supplied CD-ROM onto your CD-ROM drive.
2. The software installation graphic appears. If not, run
“setup.exe” .