HP N9120 HP Scanjet N9120 User Guide - Page 32

Chapter 4 (continued) LED indications Scanner action or condition The Power LED is lit with a steady green light. The scanner is on and ready to scan. The Attention LED blinks green at a medium speed. The Power LED is lit with a steady green light. The scanner is scanning an original. Both LEDs are off. There is no power to the scanner. Scanner initialization or hardware problems If the scanner does not work after installation or if the scanner has stopped working correctly, you might see a message on the computer screen that is similar to one of the following: • 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 in the following sections: • Check that the scanner has power • Check the USB connection • Uninstall and then reinstall the HP Scanjet utilities Check that the scanner has power 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. • 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 right side of the scanner is in the on position. 30 Troubleshooting