What do all the lights fashing on the front of my HP Officejet Pro 5400 mean? -

I have looked in the manual and it says that it means an unrecoverable failure - unplug the printer leave for 20 seconds plug back in. This doesn t do anything. Can anyone lead me to some info about this or a website that has the same problem on?

When you unplug are you unplugging it from the computer or switching it off at the mains. Unplugging it from the computer wont do any thing. You have to switch it off so the buffer RAM can unload it s self. Also sometimes irrespective what it says in the book, multiple lights flashing means that it s usually out of ink or a cartridge is not making contact to the printed circuit pad. Regarding the web site your best place is HP s own

This could be a jammed carriage or as has be said a cartridge fault. If unplugging the main does not work then something is jammed. Have you had a paper jam of late, if so look for a piece of paper stuck somewhere