
S T 3 1 2 3 1 N         H A W K   2 L P    SEAGATE
                                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/SLIMLINE         Cylinders    3992|     |     |
Capacity form/unform  1060/ 1280 MB        Heads           5|     |     |
Seek time   / track  10.0/ 2.0 ms          Sector/track     |     |     |
Controller           SCSI2 SI/FAST         Precompensation
Cache/Buffer           256 KB READ-AHEAD   Landing Zone
Data transfer rate    5.000 MB/S int       Bytes/Sector      512
                     10.000 MB/S ext SYNC
Recording method     ZBR RLL1/7                     operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C                 |
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle               W     Shock        g                 |
       seek           6.0 W     Rotation   RPM      5411
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     800000
                                Warranty Month
Lift/Lock/Park     YES          Certificates     FCC,IEC950,UL1950,VDE        

**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
SEAGATE  ST31230N/31231N  PRODUCT SPECIFICATION

  +---------------------------------------------------------+  1
  |                                               +---1 J5  |XXPower
  |                                               +---+     |XX
  |                                                         |
  |                                                         |XX1
  |                                                         |XX
  |                                                         |XXJ1
 ++                                                         |XX
 ++LED                                                      |XXI/O
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |+-+                                                      |XX
  || |                                                      |XX
  || | J6                                   J2              |XX
  |+-1                                  8--------1          |XX
  |                                     +--------+          |XX
  +---------------------------------------------------------+



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
SEAGATE  ST31230N/ND/31231N  INSTALLATION GUIDE 77767499 REV. A 9/95

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



   REAR VIEW                    +------ 5V
                                | +---- GND
     (TOP)                      | | +-- GND
                                | | | + 12V
   +------------------------1+ +-------+
  -+:::::::::::::::::::::::::+-+O O O O+-
   +-------------------------+ +-------+
      50pin I/O Cable
      Connection


 RIGHT SIDE VIEW
 ---------------
 Suggested part number for the unusual J2 jumper is Molex 52747-0211
 (Seagate P/N 77679052).


     +-J1                                  TOP (HDA)
     |X+------------+--------+-----PWA------------------Front of drive
     +-+            |12345678|J2
                    +--------+
 TE +Terminator PWR -+||||||+- TE
 TE +Terminator PWR --+||||+-- Start Delay (12 secs * ID) DS
    |            SS ---+||+--- Motor Start ME
 PE | Parity Enable ----++---- Write Protect WP
    |
    |
  Terminator Power-source Table
  -----------------------------
  1 2             1 2             1 2
 +----           +----           +----
 |X o            |o X            |o o   Position A
 |X o            |o X            |xxx
 +------         +------         +-------
 Drive Supplies  Drive Supplies  Bus Supplies
 Bus             Own             Drive


 J2 Jumper Setting
 -----------------
 TE (Applies to "N" models only)
 On  With the jumper installed, the On-board (non-removable)
     terminator circuits are enabled (connected to the I/O lines).
     Default is jumper installed.

 Off Terminator circuits are disabled.

 NOTE
 ND models do not have terminators on the drive PCB, so these jumpers
 are not applicable.


 TP  TP
 Off Off No terminator power is connected to drive terminators
         or SCSI bus I/O pin 26.

 On  Off Drive supplies its own terminator power only.
         Jumper on this position is factory default for "N"
         models only.

 Off On  Drive supplies power to I/O pin 26 of SCSI bus; none to
         internal terminators. When drives have differential I/O
         circuits, a jumper on the right TP position may be needed
         to power external termina-tors (see system documentation).
         The "ND" model drives have differential I/O circuits which
         have no terminator circuits on the drive.

 On  On  Drive supplies terminator power to itself (internal
         connection) and to I/O pin 26 of SCSI bus. This is a
         legal jumper setting.


 TP Position A ("N" family models only)
 --------------------------------------
 On  This horizontally positioned jumper across the two TP
     positions nearest PCB edge, connects terminator power
     from SCSI bus I/O pin 26 to the drive's internal terminators.

 Off See above explanations for TP jumpers.


 DS  ME
 Off Off Spindle starts immediately after power up - Default setting.

 Off On  Drive spindle does not start until Start Unit command
         received from host.

 On  Off Spindle Startup is delayed by SCSI ID times 12 seconds
         after power is applied, i.e., drive 0 spindle starts
         immediately when DC power connected, drive 1 starts
         after 12 second delay, drive 2 starts after 24 second
         delay, etc.

 On  On  Drive spindle starts when Start Unit command received
         from host. Delayed start feature is overridden and does
         not apply when ME jumper is installed.


 WP
 On  Entire drive is write protected.

 Off Drive is not write protected. Default is no WP jumper installed.


 PE
 On  Parity checking and parity error reporting by the drive is
     enabled.

 Off Drive does not report result of parity checking to host.
     Default is a PE jumper installed.


 SS
 Off/On Reserved. Default is no jumper installed.


 LEFT SIDE VIEW                                  J5
                     TOP (HDA)                  +--1+   +-+   Back of
 Front-------PWA--------------------------------+:::+---+X|J1 drive
 of drive                                       +---+   +-+
                                            ID1--+||
                                            ID2---+| If these jumpers
                                            ID4----+ are used, the ID
                                                     jumpers in front
                                                     view ARE NOT USED

 J5  SCSI ID
 -----------
 SCSI address selection
 ----------------------
 Make sure that the SCSI bus address jumper(s) are properly set for
 the bus address assigned to the drive. Typically the primary boot
 device is set to ID 0, and the subsequent SCSI drives are jumpered
 in ascending order. Bus addresses 0 through 6 should be used (the
 host adapter usually uses address 7). If the drive LED shows no
 on/off activity when the host is trying to communicate with it,
 an incorrect bus address selection at the drive should be suspected.

   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | ID4   | ID2   | ID1   |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    1     | OPEN  | OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    2     | OPEN  | CLOSED| OPEN  |
   +----------+-------+-------+-------+
   |    3     | OPEN  | CLOSED| CLOSED|
   +----------+-------+-------+-------+
   |    4     | CLOSED| OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    5     | CLOSED| OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    6     | CLOSED| CLOSED| OPEN  |
   +----------+-------+-------+-------+
   |    7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+


 FRONT VIEW                           J6
              TOP (HDA)             +-----1+
 ---PWA-----------------------------+::::::+-----
                                    +------+
                                ID4 -+||||+- RESERVED
                                ID2 --+||+-- Remote LED (pin-3 +5V)
                                ID1 ---++--- Spindle Sync (pin-6 REF
                                             SIG+)

 J6  SCSI ID
 -----------
   +----------+-----------------------+
   | SCSI ID  |        Jumpers        |
   |          | ID4   | ID2   | ID1   |
   +----------+-------+-------+-------+
   |    0     | OPEN  | OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    1     | OPEN  | OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    2     | OPEN  | CLOSED| OPEN  |
   +----------+-------+-------+-------+
   |    3     | OPEN  | CLOSED| CLOSED|
   +----------+-------+-------+-------+
   |    4     | CLOSED| OPEN  | OPEN  |
   +----------+-------+-------+-------+
   |    5     | CLOSED| OPEN  | CLOSED|
   +----------+-------+-------+-------+
   |    6     | CLOSED| CLOSED| OPEN  |
   +----------+-------+-------+-------+
   |    7     | CLOSED| CLOSED| CLOSED|
   +----------+-------+-------+-------+

 If these ID jumpers are used, the ID jumpers shown in left side view
 ARE NOT USED.


 Bus termination
 ---------------
 Model "N" drives have an active terminator IC that is permanently
 installed, but can be enabled or disabled by a jumper plug.

 If you are installing a single drive, the terminator IC must
 remain enabled. If you are installing multiple hard disc drives,
 disable the termination IC on all the drives but the one connected
 to the end of the SCSI I/O cable.

 Model numbers that end in "ND" have differential I/O circuits.
 These drives have no provisions for terminators on the drive PCB.
 The system manufacturer must provide some external means of I/O
 line termination. The "ND" model drives can provide power for
 external terminators if the TP jumper is installed on the last
 position on the right end of J2.


 Optional parity bit enable
 --------------------------
 Some systems require parity bit checking. Consult the system
 documentation for the specific requirements. Jumper-installed
 enables parity reporting by the SCSI bus.


 Write precompensation and reduced write current
 -----------------------------------------------
 Not required on Seagate SCSI Interface drives covered by this manual.


 Drive configuration
 -------------------
 Each disc drive has one or more option select header connectors on
 the back, side or front where jumper plugs are installed to select
 the way that the drive is to be configured or to select its ID on
 the I/O bus.


 Hawk 2LP family N/ND models (50 pin SCSI I/O)
 ---------------------------------------------
 On Model N/ND drives either J6 (on the front of the drive) or J5
 (on the side behind the DC Power connector) may be used to set the
 drive ID. To avoid possible incorrect ID setting, do not use both
 J5 and J6 for ID selection.


 LED
 ---
 These pins used to connect a cable for a remote LED indicator.
 Pin 3 (top, nearest HDA), the anode connection, connects in the
 drive to the +5V supply through a pull-up resistor. Pin 4 (bottom),
 the cathode connection connects in the drive to signal common through
 the emitter-collector junction of a transistor switch that controls
 the LED on/off condition.



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
SEAGATE  ST32430/31230N/ND31221N  INSTALLATION GUIDE 77767499 REV.A,95

 Notes On Installation
 =====================


 Disc drive mounting
 -------------------
 Do not touch the connector pins or any PCB components without
 observing static-discharge precautions. Always handle the drive
 by the frame only.

 The drive may be mounted in any orientation.

     horizontally                           vertically
   +-----------------+             +--+                       +--+
   |                 |             |  +-----+           +-----+  |
   |                 |             |  |     |           |     |  |
 +-+-----------------+-+           |  |     |           |     |  |
 +---------------------+           |  |     |           |     |  |
                                   |  |     |           |     |  |
                                   |  |     |           |     |  |
 +---------------------+           |  +-----+           +-----+  |
 +-+-----------------+-+           +--+                       +--+
   |                 |
   |                 |
   +-----------------+

 The drive will operate in all axis (6 directions).

 Mount to host system chassis using four 6-32 UNC screws.

 Three mounting holes are in each side and four in the bottom of the
 drive. The maximum length that the screws should extend into the side
 chassis mounting holes is 0.15 inch (3.81 mm), and 0.20 inch (5.1 mm)
 into bottom holes, measured from the outer surface of the chassis.
 The minimum thread engagement for all mounting screws is 0.12 inch
 (3.0 mm). Tighten the screws evenly to a maximum torque of 6 in-lb
 (.675 NM). Do not over tighten or force when screw does not seem
 to screw in easily (threads not correctly engaged).

 Verify that all connections between the drive and the host system
 are correctly installed. Most cables have a contrasting color stripe
 indicating pin 1.

 Verify option select and drive ID select jumpers and installation
 of terminator enable jumper where applicable.

 Do not power up the host system until the drive is mounted and the
 system cover is replaced.

 Connect DC power connector to the drive.

 Replace the Host System cover.

 Turn on DC power.


 Mechanical installation
 -----------------------
 After setting up the drive configuration the drive must be
 mechanically installed into the host system and the power and I/O
 cables attached. Previously mentioned precautions should be observed.


 SCSI interface cable connection
 -------------------------------
 Models Hawk 2LP family are SCSI interface drives. System connection
 is via a 50 pin SCSI connector. Some cables have a contrasting color
 stripe on one edge to indicate pin 1.  Strain relief is recommended
 at the cable in drives using cables. Do not block system cooling air
 flow in routing of cables.


 Read/Write head auto-park
 -------------------------
 Seagate disc drives described herein mentioned in this drive park
 the heads automatically at power off. This feature requires no
 operator intervention.


 Grounding
 ---------
 Signal ground (PCB) and HDA ground are connected together in the
 Hawk 2LP family drives and cannot be separated by the user.
 The equipment in which the drive is mounted is connected
 directly to the HDA and PCB with no electrically isolating
 shock mounts. If it is desired for the system chassis to not be
 connected to the HDA/PCB ground, the systems integrator or user
 must provide a nonconductive (electrically isolating) method of
 mounting the drive in the host equipment.



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
SEAGATE  ST32430/31230N/ND 31231N  INSTALLATION GUIDE 77767499, REV.A

 General
 -------

 Safety Instructions
 -------------------
 The disk drives are to be installed in a cuatomer supplied enclosure
 where the surrounding air does not exceed 50*C.


 CMOS configuration
 ------------------
 SCSI drives should not be defined in the CMOS. The SCSI host adapter
 uses its own BIOS to handle the Input/Output procedures. The CMOS
 setting for SCSI drive is either drive type zero, or the no drive
 installed option.


 Low-Level formatting
 --------------------
 All Hawk 2LP family drive models are low-level formatted at the
 factory and do not require this step during installation. If an
 installed drive is low-level formatted, all user data will be lost.

 Note: Seagate Technology assumes no liability for lost user data.


 Partitioning and high level formatting
 --------------------------------------
 A drive can be subdivided into "partitions" which behave as
 individual drives within the system. Consult the system documentation
 for instructions on partitioning and high level formatting.
 Information is also available in bookstores and libraries.


 SCSI interface drives
 ---------------------
 The SCSI interface handles both drive geometry and defect
 management internally. The "no drive installed" option is selected
 for systems with SCSI drives.

 All SCSI interface drives are low-level formatted at the factory.
 You may wish to low-level format the drive to optimize its perform-
 ance for your system. Consult the controller documentation for
 information on low-level formatting. Partitioning and high-level
 formatting can be done through DOS by way of the FDISK utility for
 partitioning, and FORMAT for high-level formatting. Consult your
 DOS manual for FORMAT and FDISK command options.



**********************************************************************
                      G   E   N   E   R   A   L
**********************************************************************
SEAGATE   SUPPORT SERVICES

 Seagate Technology
 ------------------
 Technical Support Services
 If you need assistance installing your drive, consult your dealer.
 Dealers are familiar with their unique system configurations and can
 help you with system conflicts and other technical issues. If you
 need additional assistance with your Seagate(r) drive or other
 Seagate products, use one of the Seagate technical support services
 listed below.

 SeaFONE at 1-800-SEAGATE (1-800-732-4283)
 Seagate's 800 number allows toll-free access to automated self-help
 services, providing answers to commonly asked questions,
 troubleshooting tips and specifications for disc drives and tape
 drives. This service is available 24 hours daily and requires a
 touch-tone phone. If you need to speak to a technical support
 engineer, dial this number and listen to the options for technical
 support. (International callers can also reach this automated
 self-help service by dialing 408-456-4496).


 Seagate Technology online services
 Using a modem, you can obtain troubleshooting tips, free utility
 programs, drive specifications and jumper settings for Seagate's
 entire product line. You can also download software for installing
 and analyzing your drive.

 SeaNET
 You can obtain technical information on Seagate drives, Seagate
 software and much more over the Internet from Seagate's World Wide
 Web home page (http://www.seagate.com) or Seagate's ftp server
 (ftp://ftp.seagate.com).

 You may also send E-mail with your questions to DiscSupport@
 Seagate.com or TapeSupport@Seagate.com.


 SeaBOARD
 SeaBOARD is a computer bulletin board system (BBS) that contains
 information about Seagate's disc and tape drive products and is
 available 24 hours daily. Set your communications software to eight
 data bits, no parity and one stop bit (8-N-1). SeaBOARD phone numbers
 are listed in the following table.

 BBS Location           Modem number
 United States      Disc: 408-434-1080; Tape: 408-456-4415
 England            44-1628-478011
 France                         33 1-48 25 35 95
 Germany            49-89-140-9331
 Singapore          65-292-6973
 Thailand           662-531-8111
 Australia          61-2-9756-2359
 Taiwan             886-2-719-6075

 Seagate CompuServe forum
 Online technical support for Seagate products is available on
 CompuServe. To access our technical support forum, type go seagate.
 This forum provides information similar to that found on SeaBOARD.
 In addition, you can type questions or browse through previous
 questions and answers on the forum messages.

 Seagate Technology FAX services
 SeaFAX
 You can use a touch-tone telephone to access Seagate's automated FAX
 system to receive technical support information by return FAX. This
 service is available 24 hours daily.
 Location               Telephone number
 United States          1-800-SEAGATE or 408-456-4496
 England                44-1628-894084
 Australia              61-2-9756-5170

 Seagate technical support FAX
 You can FAX questions or comments to technical support specialists 24
 hours daily. Responses are sent during business hours.
 Location               FAX number
 United States          408-944-9120
 England                        44-1628-890660
 France                 33 1-46 04 42 50
 Germany                        49-89-1430-5100
 Australia              61-2-9725-4052
 Singapore              65-293-4722
 Hong Kong              852-2368 7173
 Taiwan                 886-2-715-2923
 Korea                          82-2-556-7294/4251


 Seagate technical support
 You can talk to a technical support specialist during business hours
 Monday through Friday for one-on-one technical help.  Before calling,
 note your system configuration and drive model number (STxxxx). There
 are several technical support phone numbers available for various
 Seagate products.

 Location          Telephone  number
 United States Please dial 1-800-SEAGATE for the specific product
               telephone number.
               (6:00 A.M. to 11:15 A.M., 12:30 P.M. to 5:00 P.M.,
               Pacific time, M-F)
 England       44-1628-894083 (10:00 A.M. to 1:00 P.M., 2:00 P.M. to
               5:00 P.M., M-F)
 France        33 1-41 86 10 86 (9:30 A.M. to 12:30 P.M., 2:00
               P.M. to 5:00 P.M., M-F)
 Germany       Disc: 49-89-140-9332; (9:30 A.M. to 12:30 P.M., 2:00
               P.M. to 4:00 P.M., M-F)
               Tape: 49-89-140-9333
 Australia     61-2-9725-3366 (9:00 A.M. to 5:00 P.M., M-F)
 Singapore     65-290-3998 (9:00 A.M. to 12:00 P.M., 2:00
               P.M. to 5:00 P.M., M-F)
 Hong Kong     852-2368 9918
 Taiwan        886-2-514-2237
 Korea         82-2-556-8241


 SeaTDD 408-944-9121
 Using a telecommunications device for the deaf (TDD), you can send
 questions or comments 24 hours daily and exchange messages with a
 technical support specialist between 6:00 A.M. to 11:15 A.M. and
 12:30 P.M. to 5:00 P.M. (Pacific time) Monday through Friday.


 Customer Service Centers
 Seagate direct OEM, Distribution, System Integrator and Retail
 customers should contact your Seagate Service Representative for
 warranty information.  Other customers contact your place of
 purchase.  Seagate offers comprehensive customer support for all
 Seagate drives.  Seagate customer service centers are the only
 facilities authorized to service Seagate drives. These services are
 available worldwide.

 Location                       Telephone number                FAX number
 United States          1-800-468-3472;                 405-949-6740
 Other Americas
 (Canada & Brazil)      405-949-6706;               405-949-6738
 Mexico                         525-546-6965;                   525-546-4888
 Europe, Middle
 East & Africa          31-2065-43300;              31-2065-34320
 Asia Pacific &
 Australia              65-485-3595;                    65-485-4980
 Japan                          81-3-5462-2904;                 81-3-3462-2979


 Seagate, Seagate Technology and the Seagate logo are registered
 trademarks of Seagate Technology, Inc. SeaFAX, SeaFONE, SeaBOARD,
 SeaTDD, SeaNET, Medalist and DiscWizard are either trademarks or
 registered trademarks of Seagate Technology, Inc. or one of its
 subsidiaries. All other trademarks or registered trademarks are the
 property of their respective owners.


