Hard Drive: SEAGATE: ST4038 (1990) 31MB 5.25"/FH MFM ST412

S T 4 0 3 8   ( 1 9 9 0 )    SEAGATE
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 5.25"/FH              Cylinders     733|     |     |
Capacity form/unform    31/   38 MB        Heads           5|     |     |
Seek time   / track  40.0/ 8.0 ms          Sector/track   17|     |     |
Controller           MFM / ST412           Precompensation   300
Cache/Buffer               KB              Landing Zone
Data transfer rate    0.625 MB/S int       Bytes/Sector      512
                      0.625 MB/S ext
Recording method     MFM                            operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle          25.5 W     Shock        g                 |
       seek               W     Rotation   RPM      3600
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h      25000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

Layout

SEAGATE ST4038/ST4051 PRODUCT DESCRIPTION 6/26/90

  +---------------------------------------------------------+
  |                                                         |XX
  |                                                         |XX J2
  |                                                         |XX
  |                                                         |XX
  |                                                         1-+
  |                                                         | |Option
  |                                                         | |Jumper
  |                                                         +-+
  |                                                         |XX
  |                                                         |XX J1
  |                                             +---------+ |XX
  |                                             +---------1 |XX
  |                                             Terminator  |XX
  |                                                         |XX
  |                                                         |  1
  |                                                         |XX J3
  |                                                         |XX Power
  +---------------------------------------------------------+  1

Jumpers

SEAGATE ST4038/ST4051 PRODUCT DESCRIPTION 6/26/90

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

               Option Jumper Block                         Ground
       J2       +---------------+        J1                 +++
    Data Cable 1|o o o o o o o o| Control Cable        1  4 3 2 1  J3
 +--XXXXXXXXXXX-+o o o o o o o o+-XXXXXXXXXXXXXXXXXXXXXX--XXXXXXX---+
 |              +1-2-3-4-+-+-+-++                         5V    12V |
 |               | | | | | | | + Radial        +1                   |
 |Drive Select 1 + | +++ | | +-- Recovery Mode ||Terminator         |
 |Drive Select 2 --+  |  | +---- Write Fault   ||                   |
 |                    |  +------ Not Connected ||                   |
 |  Drive Select -----+          (OPEN)        ++
 |  (NEVER USED)
 |

Drive Select
------------
Pins 1 CLOSED Drive Select 1
Pins 2 OPEN

Pins 2 CLOSED Drive Select 2
Pins 1 OPEN
If you use a twisted cable, use Drive Select 2.

Drive Select 3 and 4 never used.

Radial Configuration
--------------------
CLOSED Radial Operation enabled
OPEN Daisy-chain mode enabled