Canon 2417B002 User Manual - Page 91
The Scanner Is Not Recognized Connecting, via SCSI, Scanning Is Not Performed, Slow Scanning Speed
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■ The Scanner Is Not Recognized (Connecting via SCSI) If the scanner's SCSI connection is not recognized, first confirm the following: ✔ Are the scanner and PC connected correctly using the proper cable? ✔ Is the scanner's power switch turned ON? ✔ Is the SCSI card in the PC operating properly? ✔ Was the PC turned ON before the scanner? IMPORTANT When using the SCSI connection, if the scanner is turned ON after the PC, it may not be properly recognized by the PC. If this does not solve the problem, consider the following possible causes: Cause The SCSI card is not compatible with the scanner. Solution Use a recommended SCSI card. (See p. 2-3.) Cause Solution The scanner's SCSI ID is identical to the SCSI ID of another device. Check the SCSI IDs of all SCSI devices connected to the system and set a unique SCSI ID for the scanner. Cause Solution The terminator is not set correctly. When another SCSI device is connected between the scanner and the PC, that device's terminator must be disabled (set to OFF). Cause Solution There is a problem with another SCSI device that is connected in the daisy chain. Do not use the daisy chain connection configuration. Chapter 6 Practical Examples ■ Scanning Is Not Performed If scanning does not start when it should, first confirm the following: ✔ Are the scanner and PC correctly connected with the proper cable? ✔ Is the scanner's power switch turned ON? If this does not solve the problem, consider the following possible causes: Cause Solution The ISIS/TWAIN driver and Job Registration Tool are not installed correctly Uninstall and then reinstall the ISIS/TWAIN driver and Job Registration Tool. IMPORTANT It the scanner does not operate because of a system error, turn the scanner OFF and wait at least 10 seconds before turning it back ON. If errors continue to occur, reboot the scanner and computer. ■ Slow Scanning Speed If the scanning speed is slow, first confirm the following: Scanning may be slow if the USB interface does not support Hi-Speed USB 2.0. ✔ Does the PC's USB interface support only Full-Speed USB 1.1? ✔ Is the USB cable you are using the one that was supplied with the scanner (Hi-Speed USB 2.0 compliant)? ✔ Is a USB 1.1-compliant device connected to the USB hub at the same time? If this does not solve the problem, consider the following possible causes: Cause Other applications are running in the background on your PC. Solution Quit all other applications that are running. 6-6