Specifications

UMAX AstraNET e3420 / AstraNET e3470 Owner’s Guide
73
Click the My Computer icon using the right mouse button. A pop-
up menu appears.
Click on Properties command using the left mouse button. This
brings up the Device Manager.
The scanner should be listed under the heading of Imaging Device.
If it is not present, insert the UMAX VistaScan CD-ROM into the
CD-ROM drive and reinstall VistaScan.
Unplug the scanner cable from the back of the computer, and then
plug it back into the USB port.
Verify there is power to the scanner.
If the scanner does not show up, and there is no change in the
Device Manager, try the another USB port. If the scanner still does
not appear, contact your computer manufacturer.
Problem:
Your system resources are low. Your system resources are the
amount of free resources your system can call on at a given time.
This should be at 90% or above to run a scanner. Anything under
60% will cause system freezes or link fails when you attempt to
access the scanner.
Solution:
Follow the steps below to determine if your system resources are
too low to operate the scanner.
Click the My Computer icon using the right mouse button. A pop-
up menu appears.
Click on Properties command using the left mouse button.
Click the Performance tab (the fourth tab under System Properties).
Look in the System Resources area (the second section). This
number should be above 90%.
If not, press and hold down the CTRL+ALT keys and tap the
Delete key once. This brings up the Close Programs window.
You need to end all tasks running except the EXPLORER and
SYSTRAY items. To end a task, highlight an item in the Close
Programs window and click the End Task Button. Repeat this step
for each task you want to end.