Here's an answer I have seen on another forum and been told in a store:
"Mike on Dec 26th, 2005 at 12:08 PM
Score: 2
Not sure when I bought mine but got the H07 error, tells me now that my discs are not readable. I called Panasonic C/S, person had me reinitialize DVD player by pressing and holding at the same time the reverse, pause, and on/off button. The word "INIT" displayed in the window, and I held the buttons down until "INIT" disappeared and the 00:00 reappeared. Didn't help my unit but may help someone else. C/S rep said most likely my spindle motor is bad. I am going to try oiling the spindle motor, as suggested in an earlier post, and will probably do some cleaning as well to hopefully prevent the H02/03 error codes as suggested in earlier postings."
Brian, December 2005