Troubleshooting - Canon Canoscan Fb 630U User Manual

chapter 6

Troubleshooting

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Troubleshooting
The scanner diagnostics test fails.
Problem: The Scanner Diagnostics test started with the Test
Scanner button on the Scanner sheet, returns a Test
Failed message.
Cause: The scan head may not be in its home position.
Solution: Close the ScanGear CS window if it is open.
Colors are not what you expect.
Problem: The colors in the preview image appear different
from the colors in the original image.
Cause: The scanned colors need to be adjusted.
Solution: Make sure the Auto Tone button is selected. If
further adjustments are necessary, use the Tone
sheet buttons.
The preview image of a photograph appears blurred but
the scanned image of the same photograph appears sharp.
Problem: When zooming in on a photograph in the Preview
Area, the enlarged image appears blurred.
Cause: The preview scan uses a lower resolution than the
final scan. If you zoom in on a preview image so it
is enlarged 1.5x or more, the image will not
maintain its resolution in the same way as the final
scanned image.
Solution: Select a magnified area and preview the image
again. The prescan should display a sharper image.
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