HP Scanjet 3970 HP Scanjet 2400, 3670, 3690, and 3970 digital flatbed scanners - Page 15

check the cables how to use the scanner Cable type Action Power cable • Ensure that the power cable is securely connected between the scanner and a live electrical outlet or surge protector. • If the power cable is connected to a surge protector, ensure that the surge protector is plugged into an outlet and turned on. • Disconnect the power cable from the scanner and turn off the computer. After 30 seconds, reconnect the power cable to the scanner and then turn on the computer, in that order. USB cable • Make sure you use the USB cable that was included with the scanner. Another USB cable might not be compatible with the scanner. • Ensure that the USB cable is securely connected between the scanner and the computer. For additional USB troubleshooting information, see www.hp.com/ support, select your country/region, and then use the search tool to find USB troubleshooting topics. Note: On a Macintosh computer, use the Apple System Profiler to ensure that the scanner is connected to the computer correctly. scanner initialization problems reset the scanner If you receive an error message similar to "Scanner initialization failed" or "Scanner not found" when trying to use the scanner: 1 Close the error message dialog box and close the application that was open when you received the error message. 2 Disconnect the USB cable from the scanner and then reconnect it. (Try to do a scan to see if the scanner is working now. If not, proceed with the next step.) 3 Shut down your computer and turn it off. 4 Unplug the scanner from the power source. 5 Disconnect the USB cable from the scanner and the computer. 6 Reconnect the power cable to an electrical outlet or surge protector. 7 Check the USB cable for any visible, external damage. 8 Firmly reconnect the USB cable directly to the scanner. Remove any USB hub, if present. 9 Firmly reconnect the USB cable to the computer using another USB port, if possible. The cable must be inserted completely into the computer's USB port. Note: It is important that the scanner and computer be turned off for at least 60 seconds before being restarted. 10 Restart the computer. user's manual 10