Canon 0435B008 Startup Guide - Page 66

The PC Does Not Recognize the Scanner The following are possible causes of the PC failing to recognize the scanner. Check each possible cause. Cause Remedy The scanner is not connected correctly. Check the USB cable connections between the scanner and the PC. (See p. 22.) Cause Remedy The USB 2.0 interface card is not inserted in the PC correctly. Reseat the USB 2.0 interface card in the PC correctly, referring to the instruction manual for the USB 2.0 interface card. Also, confirm whether the USB interface card is recognized by the operating system you are using. Cause Remedy The scanner is not ON. Refer to "The Scanner Does Not Turn ON," on p. 56 and make sure that the scanner is turned ON. If the scanner is not turned ON, turn it ON. (See p. 23.) Cause Remedy The scanner dose not support your USB interface. This product is not guaranteed to operate with all types of USB interfaces. Contact your local authorized Canon dealer or service representative for more information. (See p. 15.) Cause The scanner does not support the USB cable. Remedy Use the USB cable provided with the scanner. (See p. 22.) Cause The scanner does not support the USB hub. Remedy Remove the USB hub to use the scanner. (See p. 22.) Scanning Is Slow The following problems may affect the scanning speed. Cause Remedy The USB port you are using does not support Hi-Speed USB 2.0. Scanning speeds are lower if your computer's standard USB interface is not compatible with Hi-Speed USB 2.0. (See p. 15.) Use a computer that is equipped with USB that is compatible with Hi-Speed USB 2.0 as standard. Cause The USB 2.0 interface cable does not support Hi-Speed 2.0. Remedy Use the USB cable provided with the scanner. (See p. 22.) Cause Remedy The USB hub does not support Hi-Speed 2.0. Remove the hub or replace it with one that supports Hi-Speed 2.0. (See p. 22.) Troubleshooting 61