3M Tape Drive MCD-40  (MCD-403,MCD-405)
                    Switch and Jumper Settings

Switch#   Position     Description

   8  -    Open        YES Diagnostic mode
           Closed*     NO   "                    * = factory default setting

   7  -    Closed*     NO reset on power-up and SCSI reset
           Open        YES "

   6  -    Open*       Data block size = 8192 bytes
           Closed        "               8320

   5,4     Open*       Reserved

   3,2,1               SCSI address   3=MSB, 1=LSB     Open=0, Closed=1

Jumper Plugs:

             +5V ----|>|-----o JP5 o-------+------- Pin 26
                                           |
                         +---o JP6 o-------+
                         |
               ?   <-----+---o JP7 o------------ +5V

    JP5 is for those systems that require terminator power to be supplied
    by the tape drive on SCSI Pin 26 for external terminators.  The
    internal terminators must be REMOVED from the unit when using this option.

    JP6 is for those systems that supply terminator power to the tape drive.
    Only the SCSI terminators are powered in this option.  The internal
    terminators must be INSTALLED if the drive is the last device on
    the SCSI cable.

    JP7 is preset as a factory default for those systems that use no
    terminator power.  The internal terminators must be INSTALLED if the
    drive is the last device on the SCSI cable.