I have a 9121 that uses the older vintage Sony Disks (OM-D30V) that had the manual shutter. Anyone remember those? The ones shown are marked HP. I'm not sure if these were actually made by Sony or not but I believe Sony was first and they do say "Made in Japan" on the back.
You had to slide the shutter to the open position, where it would be latched (see latch in photo), then afer you removed the disk, you had to pinch the corner to cause the shutter to spring back to the closed position. The center photo shows the latching mechanism. You pinch the corner and the latch releases the shutter.
When I first obtained this drive, I thought it was broken, since I couldn't insert a floppy. Thought it was jammed . After a little investigation, I found that it used the old Sony drives.
Edited: 11 July 2003, 3:14 p.m.