HP N8460 Scanjet N8400 Setup and Support Guide - Page 22

Chapter 5 Scanner does not work after installation If the scanner does not work after installation, you might see one of the following messages displayed on the computer: • The scanner could not be initialized. • The scanner could not be found. • An internal error has occurred. • The computer cannot communicate with the scanner. To fix the problem, check the scanner cables and software as described here. Check the cables Verify that the cable connections are in working order. Power cable The power cable is connected between the scanner and a power outlet. • 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. • Ensure that the power switch on the back of the scanner is in the On position. For more information, see "Connect the power cable" on page 6. If the problem persists after verifying the above items, try the following: 1. Disconnect the power cable from the scanner. 2. Wait 60 seconds. 3. Reconnect the power cable to the scanner. USB cable Check the physical connection to the scanner: • Use the 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 or USB hub. The trident icon on the USB cable faces up when the cable is properly connected to the scanner. Troubleshoot the USB connection: 18 HP Scanjet N8400 series