UMAX Technologies Astra 4000 - Manual (Page 44)

Solution:
If you are having problems installing or using the Astra 4000U scanner, ensure that Macintosh OS 8.0 or
higher is installed on your computer.
Problem:
The system takes too long to scan.
Solution:
Disable virtual memory, reboot your computer with the extensions disabled (hold down the SHIFT key
during re-boot) and try again. Booting with the shift key still loads the UMAX scanner extension required
for scanning.
Problem:
Your system goes to the Finder when you try to acquire the scanner.
Solution:
Plug the scanner into its own power outlet. If still does the same thing, please call UMAX Technical
Support.
Problem:
The following error message appeared: “Error: Not enough Power to Function”
Solution:
The Macintosh OS generates this message if:
• A device draws too much power from the USB bus
• One or more devices plugged into a hub require more power than is available
• You attached a self-powered device (such as a printer or floppy drive) to your computer without
plugging it into an electrical outlet.
Remove all other devices from the USB chain, so the scanner is the only device on the USB chain. Make
sure that the scanner power adapter is plugged directly into the wall, not into a power strip.
Problem:
The following error message appeared: “Error: No Driver Found”
Solution:
The Macintosh OS generates this message if it could not find a driver in the System Folder for the USB
device you just connected. You may have forgotten to install the software that came with the device, or
you may have put the device driver (i.e., the software that allows Macintosh to recognize and communicate
with the USB device) in the wrong place in your System Folder.
Re-install the software driver from the VistaScan CD-ROM. Make sure the scanner extension is loaded
and on.
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