Check the bottom plate. There should be an access hole there. All drives that I have seen have some type of access either from the front (pin hole) or the bottom. The bottom hole should expose the side of a gear. Samsung for exmple, has a "tool" that is used to turn the gear. Its really nothing other than another gear on a shaft that fits into the hole on the bottom chassis.

Post a picture of the bottom if you can.

Dan