Chapter 13

Look at the On button located on the top of the HP All-in-One. If it is not lit, the HP All- in-One is turned off. Make sure the power cord is firmly connected to the HP All-in- One and plugged into a power outlet. Press the On button to turn on the HP All-in- One.

Check the USB cable. If you are using an older cable, it might not be working properly. Try connecting it to another product to see if the USB cable works. If you experience problems, the USB cable might need to be replaced. Also verify that the cable does not exceed 3 meters (9.8 feet) in length.

Check the connection from the HP All-in-One to your computer. Verify that the USB cable is securely plugged into the USB port on the back of the HP All-in-One. Make sure the other end of the USB cable is plugged into a USB port on your computer.

After the cable is connected properly, turn the HP All-in-One off and then on again.

Troubleshooting

If you are connecting the HP All-in-One through a USB hub, make sure the hub is turned on. If the hub is on, try connecting directly to your computer.

Check other printers or scanners. You might need to disconnect older products from your computer.

Try connecting the USB cable to another USB port on your computer. After you check the connections, try restarting your computer. Turn the HP All-in-One off and then on again.

If necessary, remove the software you installed with the HP All-in-One and then install it again.

For more information, see:

Uninstall and reinstall the software” on page 106

Find more information” on page 11

Information on print cartridges

For best results, use HP print cartridges. Refilled print cartridges might damage the HP All-in-One. The following tips help maintain HP print cartridges and ensure consistent print quality.

Keep all print cartridges in the original sealed packages until they are needed.

Store print cartridges at room temperature (15.6°-26.6° C or 60°-78° F).

92 Troubleshooting

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HP C4380, C4390, C4385 manual Information on print cartridges