320MB & 400MB SCSI Disk Drive Jumpers Setting
  320MB...Disk PN93X0961   Logic card and frame assembly PN93X0901.
  400MB...Disk PN73F9001   Logic card and frame assembly PN73F8994.
    ___________________________________________
   | Address  | Jumper 1 | Jumper 2 | Jumper 3 | PN93x0961 includes
   |__________|__________|__________|__________| Logic Card PN93x0901
   |    0     |   Off    |   Off    |   Off    |
   |    1     |   On     |   Off    |   Off    |
   |    2     |   Off    |   On     |   Off    |
   |    3     |   On     |   On     |   Off    |    1 2 3
   |    4     |   Off    |   Off    |   On     |   ______________
   |    5     |   On     |   Off    |   On     |  | o o o   o    |
   |    6     |   Off    |   On     |   On     |  | o o o o o    |
   |__________|__________|__________|__________|  |______________|

 NOTE: When the Disk is installed in a 7204, ALL jumper must be
       removed and a address cable is attached to the connector.
       The SCSI address is set at the back panel of the device.