I put a DVD into my Panasonic DVD-RP56 player this evening and to my surprise, it could not read any disc that I inserted. Instead, it simply displayed: “H02 Error”. A quick Google search indicated this was a common problem (defect perhaps?) to many Panasonic players.
The solution is pretty simple: remove the case, open the tray and then unplug the unit. Inside you’ll see the portion that spins the discs. Give this a few good whirls and start it up again. If it doesn’t spin on its own, spin it around yourself a couple times and it should start up.