Yesterday was one of those days. I had a disk in the HD DVD player and removed it but left the drawer open. The drawer is black and I came back a bit later bent down and did not see the drawer and hit my head with it. NOW THE DRAWER WOULD NOT OPEN OR CLOSE. I thought this was the end of my HD DVD player. I tried to push it a bit but it felt like it would break if forced.
Took the machine apart and was able to remove the HD DVD drive and then get to the drawer assembly. Found a small plastic piece out of place that was locking the draw. Moved it back in place, put the wires back in place and put it back together. Lucky break --- it works!!
It was an A2. The drive came out similar to a computer drive. 4 screws opened the drive up to get to the mechanism. It has two sets of wire connectors on the back one is a plug and the other is a ribbon. The cables must be off to open the drive.