technics dvd stereo system sc-hdv 600?

I bought a head cleaner for dvds and cd players I put it in and followed instructions now my player will play cds but will not play dvds it says on screen reading but only 4 zeros come up instesd of 5 and it just sticks there I did not have any problems until I cleaned the head it seems to freeze I can not get disc out and none of the buttons work unless I switch power off and on again then it will let me eject it can you help