
S T 3 5 2 X    SEAGATE
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders        |  980|  977|
Capacity form/unform    42/   51 MB        Heads           2|    5|    5|
Seek time   / track  28.0/ 7.0 ms          Sector/track     |   17|   17|
Controller           IDE / XT              Precompensation
Cache/Buffer               KB              Landing Zone
Data transfer rate    1.250 MB/S int       Bytes/Sector      512
                            MB/S ext
Recording method     RLL 2/7,ZBR                    operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle           2.0 W     Shock        g                 |
       seek               W     Rotation   RPM      3048
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     150000
                                Warranty Month
Lift/Lock/Park     YES          Certificates                                  

**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
SEAGATE  ST352A/X  PRODUCT MANUAL

  +---------------------------------------------------------+
  |                                User         12-------2  |XX 3-pin
  |                                Configuration+--------+  |xx Power
  |                                Jumper block             |XX
  |                                                         |XX AT/XT
  |                                                         |XX Inter-
  |                                                         |XX face
  |                                                         |XX
  |                                                         |.X
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |X1
  |                                                         |
  |                                                         |XX 4-pin
  |                                                         |XX Power
  +---------------------------------------------------------+



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
SEAGATE  ST352A/X  PRODUCT MANUAL

 Jumper setting
 ==============

 AT
 User Configuration jumper block (12-pin)
 ----------------------------------------

                       +12-10-8--6--4--2+
                       |O  O  O  O  O  O|
                       |O  O  O  O  O  O|
                       +11-9--7--5--3--1+

              +----------------+    +----------------+
  Drive is    |O  O  O  O  O  X|    |O  O  O  O  X  X| Slave drive
  master      |O  O  O  O  O  X|    |O  O  O  O  X  X| present
              +----------------+    +----------------+


              +----------------+    +----------------+
  Drive is    |O  O  O  O  O  O|    |xxxx  O  O  O  O| Bus Reset HIGH
  slave       |O  O  xxxx  O  O|    |O  O  O  O  O  O|
              +----------------+    +----------------+

              +----------------+
  Bus Reset   |X  O  O  O  O  O|
  LOW         |X  O  O  O  O  O|
              +----------------+
 The bus reset active level is systemdependent. You must install a
 jumper in one of these positions for the drive to operate.

              +----------------+    +----------------+
  Drive       |O  O  O  X  O  O|    |O  O  O  O  O  O| Factory test
  activity LED|O  O  O  X  O  O|    |O  xxxx  O  O  O| only (Do Not
  (Optional,  +----------------+    +----------------+ Use)
  master only)


 Drive activity LED
 ------------------
 To cause the drive to use the DASP signal to indicate bus activity
 through a remote LED, install a jumper on pins 5 and 6. This
 jumper can only be installed on the master drive. (On the slave
 drive, the DASP- signal indicates that a slave is present.


 Factory Test
 ------------
 Not recommended for field use. When a jumper is installed on pins 7
 and 9, the actuator continuously seeks between track 0 and the
 maximum data track and ignores any signals sent through the inter-
 face.


 Master/Slave
 ------------
 You can install up to two drives on a single AT bus if you use a
 daisy-chain cable. Table below describes how to install the jumpers.

    +----------------+---------+---------+---------+
    |System          | Pins    |         |         |
    |Configuration   | 1 and 2 | 3 and 4 | 5 and 7 |
    +----------------+---------+---------+---------+
    |Only drive in   | CLOSED  |  OPEN   | OPEN    |
    +----------------+---------+---------+---------+
    |Master in a two-|         |         |         |
    |drive system    | CLOSED  |  CLOSED | OPEN    |
    +----------------+---------+---------+---------+
    |Slave in a two- |         |         |         |
    |drive system    | OPEN    |  OPEN   | CLOSED  |
    |system          |         |         |         |
    +----------------+---------+---------+---------+


 XT jumpers
 ==========

 User Configuration jumper block (12-pin)
 ----------------------------------------

                       +12-10-8--6--4--2+
                       |O  O  O  O  O  O|
                       |O  O  O  O  O  O|
                       +11-9--7--5--3--1+

              XT mode (Always
              installed)
              +----------------+
              |O  O  X  O  O  O|
              |O  O  X  O  O  O|
              +----------------+

              ST352X only             ST352X only
              Full capacity (40 MB)   30-MB capacity
              +----------------+      +----------------+
              |O  O  O  O  O  X|      |O  O  O  O  X  O|
              |O  O  O  O  O  X|      |O  O  O  O  X  O|
              +----------------+      +----------------+

              ST351X only
              20-MB capacity           Bus Reset HIGH
              +----------------+      +----------------+
              |O  O  O  O  X  X|      |xxxx  O  O  O  O|
              |O  O  O  O  X  X|      |O  O  O  O  O  O|
              +----------------+      +----------------+

              Bus Reset LOW
              +----------------+
              |X  O  O  O  O  O|
              |X  O  O  O  O  O|
              +----------------+

 The bus reset active level is system-dependent. You must install a
 jumper in one of these positions for the drive to operate.

               Drive activity
               LED (Optional,         Factory test only
               master only)           (Do Not Use)
              +----------------+      +----------------+
              |O  O  O  X  O  O|      |O  O  O  O  O  O|
              |O  O  O  X  O  O|      |O  xxxx  O  O  O|
              +----------------+      +----------------+



 Drive capacity options
 ----------------------
 To specify different capacities for the ST352X drive install the
 jumpers.


 Bus Reset (HIGH and LOW)
 ------------------------
 The setting of this jumper depends on the system. A jumper must be
 installed in either the HIGH or LOW position for the drive function.


 Drive activity LED
 ------------------
 When a jumper is installed on pins 5 and 6, the drive uses the DASP-
 signal to indicate bus activity through a remote LED.


 Factory Test
 ------------
 Not recommended for field use. When a jumper is installed on pins 7
 and 9, the actuator continuously seeks between track 0 and the
 maximum data track and ignores any signals sent through the inter-
 face.


 3-pin DC power
 --------------

       ---+---------+---
          | 3  2  1 | <--- key
          +-+--+--+-+
            |  |  +------- + 5 VDC
            |  +---------- +12 VDC
            +------------- Ground


 4-pin DC power
 --------------

      ----+------------+----
          | 4  3  2  1 |
          +-+--+--+--+-+
            |  |  |  +------- +12 VDC
            |  |  +---------- +12 VDC return
            |  +------------- + 5 VDC return
            +---------------- + 5 VDC



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
SEAGATE  ST352A/X  PRODUCT MANUAL

 Notes on installation
 =====================

 Drive mounting
 --------------

     horizontally             vertically
   +-----------------+   +--+             +--+ +------------------+
   |                 |   |  +-----+ +-----+  | |                  | x
   |                 |   |  |     | |     |  | x+----------------+x
 +-+-----------------+-+ |  |     | |     |  | ||x              x||
 +---------------------+ |  |     | |     |  | ||  x          x  ||
                         |  |     | |     |  | ||    x      x    ||
      x           x      |  |     | |     |  | ||      x  x      ||
 +------x------x-------+ |  +-----+ +-----+  | ||       xx       ||
 +-+------x--x-------+-+ +--+             +--+ ||     x    x     ||
   |       xx        |                         ||   x        x   ||
   |     x    x      |                         || x            x ||
   +---x--------x----+                         |x                x|
     x            x                           x++----------------++x
      PROHIBITED!                                   PROHIBITED!

 You must mount the drive within 5* of a vertical or horizontal axis.


 Mounting the drive
 ------------------
 For optimum performance, format the drive in the same orientation as
 you intend to mount it in the host system. Allow a minimum clearance
 of 0.050-inch around the entire drive envelope for cooling airflow
 and movement during shock or vibration. Shock mounts placed between
 the drive and the host frame should be designed so that the system
 has a vertical resonant frequency of 25 Hz or less.


 Bottom mounting
 ---------------
 Insert four mounting screws not more than 0.200 inches (6 full turns)
 into the drive frame. If you use a screw that is too long, you could
 damage the drive.


 Standard side mounting
 ----------------------
 Insert four mounting screws not more than 0.125 inches (4 full turns)
 into the drive frame. If you use a screw that is too long, you could
 damage the drive.


 Three-hole side mounting
 ------------------------
 If your system does not allow you to use all four mounting points,
 you can mount the drive satisfactorily using only three screws.

 Use 6-32 UNC-2A screws on drives with standard-size mounting holes.
 These drives have an "S" stamped on the frame runner. Use M4 screws
 on drives with metric mounting holes. These drives have an "M"
 stamped on the frame runner.

 Caution: Be careful not to over-tighten the screws - you could damage
 the drive. (Max torque: 6 inch-Ibs).


 Acoustics
 ---------
 At a distance of 1 meter, the drive creates a sound pressure of 35
 dBA at idle.


 Auto-park
 ---------
 Upon power-down, the read/write heads automatically move to the
 shipping zone. The heads park inside the maximum data cylinder. When
 power is applied, the heads recalibrate to track 0.


 AT/XT interface connector
 -------------------------
 The interface cable connector is a 40-pin connector with two rows of
 20 pins on 100 mil centers. The maximum cable length is 18 inches
 (0.457 meters). Strain relief is recommended. Recommended cables are
 shown below.

 AMP     P/N 1-499496-0
 DuPont  P/N 66900-040

 A dual-drive AT system requires an AT interface daisy-chani cable. A
 dual-drive XT system requires two separate XT interface cables. The
 ST352A/X family drives do not use terminating resistors.



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
SEAGATE  ST352A/X  PRODUCT MANUAL

 AT and XT power-on diagnostics
 ------------------------------
 If an error condition is detected during the power-on diagnostics,
 the LED flashes to indicate the cause of the failure.

      LED flash codes
     +--------------------------------------------------------------+
     |Number of                                                     |
     |LED flashes       Description of problem                      |
     +--------------------------------------------------------------+
     |    1             Microprocessor memory failure               |
     +--------------------------------------------------------------+
     |    2             Program ROM memory checksum error           |
     +--------------------------------------------------------------+
     |    5             Program RAM access error                    |
     +--------------------------------------------------------------+
     |    6             Buffer memory access error                  |
     +--------------------------------------------------------------+
     |    7             Drive not ready                             |
     +--------------------------------------------------------------+
     |    8             Error uploading RAM                         |
     +--------------------------------------------------------------+
     |    9             Program RAM not compatible with ROM         |
     +--------------------------------------------------------------+
     |   10             Read/Write sequencer chip diagnostics error |
     +--------------------------------------------------------------+
     |   11             Program RAM checksum error                  |
     +--------------------------------------------------------------+
     |   12             Error uploading defect data                 |
     +--------------------------------------------------------------+
     |   13             Defect data checksum error                  |
     +--------------------------------------------------------------+
     |   17             Spindle failure                             |
     +--------------------------------------------------------------+
     | 18 or 19         Invalid defect tables                       |
     +--------------------------------------------------------------+


 Maximum logical parameters
 --------------------------
 All cylinder, head, and sector geometries are limited to:

   - The maximum specified below, and
   - The constraints of the following two relations:

 (heads) x (sectors per track)   255
 (cylinders) x (heads) x (sectors per track)   guaranteed sectors

 Cylinders          1,024
 Logical heads      16
 Sectors per track  128


 Reliability
 -----------
 MTBF power on-hours     150,000
 MTTR (minutes)          30
 Service life (years)    5

 The specification for MTBF, above, assumes nominal power at sea level
 and an ambient temperature of 25*C.


 Environment
 -----------
 The ST352A/X family drives are listed in accordance with UL 478 and
 CSA (0-M1982) and meet all applicable sections of VDE 0806/08.81 and
 IEC 380, as tested by TUV-Rheinland, North America.

 Input noise
 -----------
 The input noise was measured at the host system power supply across
 an equivalent 20-ohm resistance on the +12 VDC line and an equivalent
 8-ohm resistance on the +5 VDC line.

 Permitted input noise ripple (max)      100mV (peak-to-peak)
 Permitted input noise frequency (max)   20 MHz


