UMAX Technologies 3450 Owner's Manual page 53

2. Connect the USB cable to the USB port on the back of the computer.
NOTE: If you unplug the scanner's power to turn it off, you must also disconnect the USB cable from the
computer. To resume use of the scanner, reconnect the power cord, and then the USB Cable.
Problem:
Scanner is not present in the Device Manager. The scanner must be present in the Device manager. If
there is no listing for it, the scanner will not work.
Solution:
Follow the steps below to determine if the scanner is present in the Device Manager.
1. Click the My Computer icon using the right mouse button. A pop-up menu appears.
2. Click on Properties command using the left mouse button. This brings up the Device Manager.
3. The scanner should be listed under the heading of Imaging Device.
4. If it is not present, insert the UMAX VistaScan CD-ROM into the CD-ROM drive and reinstall
VistaScan.
5. Unplug the scanner cable from the back of the computer, and then plug it back into the USB port.
6. Verify there is power to the scanner.
7. If the scanner does not show up, and there is no change in the Device Manager, try 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.
1. Click the My Computer icon using the right mouse button. A pop-up menu appears.
2. Click on Properties command using the left mouse button.
3. Click the Performance tab (the fourth tab under System Properties).
4. Look in the System Resources area (the second section). This number should be above 90%.
5. If not, press and hold down the CTR+ALT keys and tab the Delete once. This brings up the Close
Programs window.
6. 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.
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