HP deskjet 3840 Manuale Utente

If you receive this error message, ensure the USB cable is not greater than five

meters (approximately 16 feet, 5 inches) in length. Connect the printer directly to

the USB port on the computer and not to a USB hub.

An error message appears while the Power light is flashing

Read the error message explaining the problem and its solution.
For more information, see

11.11 If you continue to have problems

If you continue to have problems after investigating the troubleshooting topics, turn

off your computer and then restart it.
If you still have problems after restarting your computer, go to HP customer support

HP Deskjet 3840 series printer User's Guide