Chapter 5 Troubleshooting5-4Problem Attempting to scan a document of a size, thickness, or weight that the scannercannot scan.Solution Check the size, thickness, and weight of the document. For precautions concerningdocuments, see “3-1 Documents,” on p. 3-1.Problem The rollers inside the scanner are dirty or worn.Solution Clean the rollers, see “4-1 Regular Maintenance,” on p. 4-1. If the rollers are worn,then they need to be replaced. Contact your local authorized Canon dealer or servicerepresentative to purchase a roller replacement kit.IMPORTANTThe retard roller and roller unit are consumable components. You need to replace the retardroller and roller unit when cleaning does not appear to improve performance. Contact yourlocal authorized Canon dealer or your service representative about purchasing a rollerreplacement kit, and then replace the retard roller and the roller unit.✘ Saved Image Files Do Not OpenWhen image files saved by CapturePerfect 3.0 cannot be opened by other applications, theprobable causes are as follows.Symptoms A multi-page TIFF file saved in CapturePerfect 3.0 cannot be opened by otherapplications.Problem The application you are using to open the TIFF file does not support multi-pageTIFF files.Solution Open the file with an application that supports multi-page TIFF files.Symptoms A TIFF file saved in CapturePerfect 3.0 cannot be opened by otherapplications.Problem If the TIFF file saved in CapturePerfect 3.0 has been compressed, the applicationyou are using to open the TIFF file does not support the compression type thatwas used to save the file in CapturePerfect 3.0.Solution Set the compression type for the image file to [None] and save the file again inCapturePerfect 3.0.✘ Scanning Results Are Not as ExpectedIf there is a problem with the scanning result (e.g., the scanned image is not clear, or the image isstriped or dirty,) the probable causes are incorrect ISIS/ TWAIN driver settings or a problem withthe scanning unit inside the scanner. Scanning results can also become skewed if the ISIS/TWAIN driver has not been installed correctly, or the application in use does not support ISIS/TWAIN driver functions.Symptoms The scanned image is too dark (or faint.)Problem The [Brightness] setting is not set to an appropriate value.Solution If the image is dark, set a higher [Brightness] setting, or if the image is faint, set alower [Brightness] setting.