[cctalk] Persci 299 drives - park heads/lock?

I am working on an unknown status Persci 299 drive and one of the two drives is locked closed. Is this a "park" of some kind or is the drive broken? If it's a parked drive (only the drive 0 side) how do you unpark the drive? I can't seem to find any info on this. If I find anything I will post my findings. Thanks in advance Bill