[. . . ] Use only the power supply provided with this product or the manufacturer's authorized replacement power supply. [. . . ] If you are using your printer with a computer, continue with "Install the software". Make sure your computer is on and attach the USB cable to your printer and computer. To prevent errors during installation, be sure to: 1 Close all open programs. Important: After installation is complete, remember to re-enable your antivirus software. Make sure your computer is on and attach the USB cable to your printer and computer. To prevent errors during installation, be sure to: 1 Close all open programs. Important: After installation is complete, remember to re-enable your antivirus software. Symptom The Power light is not lit Diagnosis Is the power cord pushed all the way into the printer? [. . . ] Record the following information (located on your store receipt and the back of your printer) and have it ready when you contact us so that we may serve you faster: Machine Type number_____________________________ Serial number____________________________________ Date purchased__________________________________ Store where purchased____________________________ [. . . ]