
S T 4 1 5 2 0 N D             S W I F T    SEAGATE
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders    2098|     |     |
Capacity form/unform  1370/ 1600 MB        Heads          17|     |     |
Seek time   / track  11.5/ 1.7 ms          Sector/track     |     |     |
Controller           SCSI2 DIFFERENTIAL    Precompensation
Cache/Buffer           256 KB ADAPTIVE     Landing Zone
Data transfer rate    3.000 MB/S int       Bytes/Sector      512
                      5.000 MB/S ext
Recording method     RLL 2/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle               W     Shock        g                 |
       seek          33.1 W     Rotation   RPM      5400
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     150000
                                Warranty Month
Lift/Lock/Park     YES          Certificates


**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
SEAGATE  ST41520N/ND  JUMPER SETTING

 Jumper Setting
 ==============

 I/O BOARD                                     +-------Parity Disable
                                               | +-Spinup Delay (10s)
                                               | | +----- Manual Reset
                                               | | | + Active LED(red)
      +-- Spindle Sync                         | | | | +Heartbeat LED
     A|                          SCSI ID --+  ++-+-++| | (green)
    1o-o+  +-------------------------+     |  |o o o|* *
 +--+p n+--+XXXXXXXXXXXXXXXXXXXXXXXX1+--+--+--+o o o+----------------+
 |  |o o|  +-------------------------+  |o o o+-----+               o|
 |  +o-o+  +----------1   +----------1  |o o o|                     o
 |   o-o5  +---|------+   +---|------+  +4-2-1+                     |
      |B       + T-RES +-----++ T-RES ONLY on         Motor Start --+
      |                |3o o4|  Differential          Enable
      +-- Select       |2o o1|
          Plug         +--+--+
                          |                DC Power Connector J15
                          |                 0-0-0-0-0-0-0-0-0-1
                          |
 +------------------------+---------+
 |  Terminator Power Source Options |
 +----------------------------------+--------------------------------+
 |2 & 3 - Host supplies power over the SCSI Bus for terminators.     |
 |        Drive supplies no terminator power.                        |
 |1 & 2 - Drive supplies power for its own terminator resistor-paks  |
 |        but not to SCSI Bus. This is the factory setting.          |
 |    4 - Not used.                                                  |
 +-------------------------------------------------------------------+


 Servo Board

      Fault LED (red) ------+
    Ready LED (green) ---+  |          DIP SWITCHES
 Unit Selected(amber) +  |  |     S3        S2        S1
                      |  |  |  +--------++--------++--------+On
                      *  *  *  |12345678||12345678||12345678|
                               +--------++--------++--------+Off
                                +--------+------+|  ||||+-++
                                         |       |  ||||  |
             Sector Switches (all OFF) --+       |  ||||  |
                           Runt Sector -8--------+  ||||  |
                    Sweep Cycle Enable -1-----------+|||  |
            Enable Sweep only on seeks -2------------+||  |
         Manufacturing Test (keep OFF) -3-------------+|  |
             Write Enable (default ON) -4--------------+  |
        Unit Select Switches (all OFF) -6-8---------------+


