Do you have specifications on how to do maintenance on the Emerson EWD2202 DVD/VCR Player combo. A small black round disk with silver rectangles on the outside of one side of the disk fell off the DVD side. When you insert the DVD, it will not play but it does open and close. Where does this part go. I took the player apart and do not see where this part fell off. If you can give me some specifications where this belongs, it would be appreciated so I can fix this instead of sending it to be repaired. It looks like it was connected by a screw that may have fell off. My email address is LHardy8656@aol.com. Thank you.