I don't know a thing about what those pins at the back of CD-ROM drive do.
Just out of curiosity:
Is there some combination of pins that gives (for example) "PLAY" function or "EJECT", etc.
In other words: if you would have an autonomus power suplly exact to requirements for CD-ROM drive, would it be possible to have a simple interface with buttons connected to some pins on CD-ROM to controle it's functions?
Can it work autonomuslly at all?!?
Maybe there is some other way to controle it's functioning?