If it is a small, yellow box-looking drive, it's a beta drive. A "0" usually means that the magazine needs a zero return performed. You can access the alarm menu of that beta drive thru the PMM menu.
Push "System" hard key.
Push "NC System" soft key.
Now push the right soft arrow key untill you see "PMM" as an option on the soft keys.
Shoot me an e-mail and I'll see what I can dig up.