
S T 1 5 2 3 0 N             H A W K   4    SEAGATE
NO MORE PRODUCED                                      Native|  Translation
                                                      ------+-----+-----+-----
Form                 3.5"/HH               Cylinders    3892|     |     |
Capacity form/unform  4294/ 5160 MB        Heads          19|     |     |
Seek time   / track  10.0/ 1.7 ms          Sector/track     |     |     |
Controller           SCSI2 SI/FAST         Precompensation
Cache/Buffer           512 KB ADAPTIVE     Landing Zone
Data transfer rate    6.000 MB/S int       Bytes/Sector      512
                     10.000 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
                                                  -------------+--------------
Supply voltage     5/12 V       Temperature *C         5 55    |    -40 70
Power: sleep              W     Humidity     %                 |
       standby            W     Altitude    km                 |
       idle           9.0 W     Shock        g                 |
       seek               W     Rotation   RPM      5411
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit
                                MTBF         h     800000
                                Warranty Month        60
Lift/Lock/Park     YES          Certificates     FCC



**********************************************************************
                        L   A   Y   O   U   T
**********************************************************************
SEAGATE  ST15230N/ND  INSTALLATION GUIDE 77767474 REV. B  10/94

  +---------------------------------------------------------+
  |1-+                                         +---1 J5     |XX
  || |J6                                       +---+        |XX SCSI
  |+-+                                                      |XX I/O
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX J1
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |XX
  |                                                         |X1
  |                                                         |
  |                               +---------1 J2            |XX Power
  |                               +---------+               |XX
  +---------------------------------------------------------+  1



**********************************************************************
                      J   U   M   P   E   R   S
**********************************************************************
SEAGATE  ST15230N/ND  INSTALLATION GUIDE 77767474 REV. B  10/1994

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

 Each disk 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.


 J2  Motor Start/Write Protect/Terminator Power
 ----------------------------------------------

              Position Numbers
          +-1--2--3--4--5--6--7--8-+         X J3 Power
 ---------+ o  X  o  o  o  o  o  1 +---------X
          | o  X  o  o  o  o  xxxx |
          +----+---------------TP--+ \ Position A
              Position 2

     1   Enable Terminators [2]
         With the jumper installed, the On-board (non-removable)
         terminator circuits are enabled (connected to the I/O lines).
         Default is jumper installed.

         With the jumper NOT installed Terminator circuits are
         disabled.

     2   Jumper installed in position 2 enables the Delayed Motor
         Start option (if jumper in position 3 is off). Motor start
         delays is 16 times the drive ID number in seconds; i.e. drive
         ID 0 starts immediately. Drive one starts 16 seconds later,
         etc.

     3   Jumper installed enables Motor Start option. The drive waits
         for the Start unit command from the host before starting the
         spindle motor. If no jumper is installed, drive operation de-
         pends on wether or not there is a jumper in position 2.

         If jumpers 2 and 3 are both off, drive spins up with no delay
         when power is applied.

         Jumper 2 and 3 are installed
         Drive spindle starts when Start Unit command received from
         host. Delayed start feature is overridden and does not apply
         when jumper 3 is installed.

     4   Jumper installed means entire drive is write protected.
         Jumper NOT installed means write protect is disabled
         (default).

     5   Jumper installed means parity checking by the drive is
         enabled.

         Jumper NOT installed
         Drive does not report result of parity checking to host.
         Default is jumper 5 installed.

     6   RESERVED! Default is no jumper installed.

    7/8  Jumper 7 and 8 OFF
         No terminator power is connected to drive terminators or
         SCSI bus I/O pin 26.

         Jumper 7 ON and Jumper 8 OFF
         Drive supplies its own terminator power only. Jumper in this
         position is factory default for "N" models only.

         Jumper 7 OFF and Jumper 8 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 jumper 8 position may be needed to
         power external terminators. The "ND" model drives have
         differential I/O circuits which have no terminator circuits
         on the drive.

         Jumper 7 ON and Jumper 8 ON
         Drive supplies terminator power to itself (internal
         connection) and to I/O pin 26 of SCSI bus. This is a legal
         jumper setting.

         Position A ON
         This horizontally positioned jumper across the two TP
         positions nearest PCB edge, connects terminator power from
         SCSI bus I/O pin 2 to the drive's internal termination.

         OFF
         See above explanations for jumper 7 and 8.


 [2] "ND" models do not have terminators on the drive PCB, so these
     jumpers are not applicable on those drives.


 J5 SCSI ID
 ----------
           SCSI ID 0        SCSI ID 1        SCSI ID 2
          +---------+      +---------+      +---------+
          | o  o  1 |      | X  o  o |      | o  X  o |
          | o  o  o |      | X  o  o |      | o  X  o |
        A +-0--1--2-+      +---------+      +---------+

           SCSI ID 3        SCSI ID 4        SCSI ID 5
          +---------+      +---------+      +---------+
          | X  X  o |      | o  o  X |      | X  o  X |
          | X  X  o |      | o  o  X |      | X  o  X |
          +---------+      +---------+      +---------+

           SCSI ID 6        SCSI ID 7
          +---------+      +---------+
          | o  X  X |      | X  X  X |
          | o  X  X |      | X  X  X |
          +---------+      +---------+

 Drive ID on SCSI Bus (J6 may be used instead). The drive ID is binary
 coded positionwise.


 J6 SCSI ID (optional)
 ---------------------


       A  A  A                         SCSI ID 0
     +-2--1--0----------+             +------------------+
     | o  o  o  o  o  1 |             | o  o  o  o  o  o |
     | o  o  o  o  o  o |             | o  o  o  o  o  o |
     +-1--2--3--4--5--6-+             +------------------+

      SCSI ID 1                        SCSI ID 2
     +------------------+             +------------------+
     | o  o  X  o  o  o |             | o  X  o  o  o  o |
     | o  o  X  o  o  o |             | o  X  o  o  o  o |
     +------------------+             +------------------+

      SCSI ID 3                        SCSI ID 4
     +------------------+             +------------------+
     | o  X  X  o  o  o |             | X  o  o  o  o  o |
     | o  X  X  o  o  o |             | X  o  o  o  o  o |
     +------------------+             +------------------+

      SCSI ID 5                        SCSI ID 6
     +------------------+             +------------------+
     | X  o  X  o  o  o |             | X  X  o  o  o  o |
     | X  o  X  o  o  o |             | X  X  o  o  o  o |
     +------------------+             +------------------+


      SCSI ID 7                        RESERVED
     +------------------+             +------------------+
     | X  X  X  o  o  o |             | o  o  o  X  o  o |
     | X  X  X  o  o  o |             | o  o  o  X  o  o |
     +------------------+             +------------------+


      Remote LED
     +------------------+  Pin 3
     | o  o  o  o  X  o |  +5V
     | o  o  o  o  X  o |
     +------------------+

 1,2,3  Either J5 or J6 (optional) may be used to select drive ID.
        Both should not be used at same time, because at some future
        time, settings may be changed, causing the drive to not
        respond correctly. The factory installs no ID jumpers on J5 or
        J6 (drive ID 0).


     5  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 pullup 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.

     6  Reserved.


 On SCSI I/O 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.



 J3   DC Power and pin connector assignments
 -------------------------------------------
 -------------------+
 --+  +-----J3-----+|  pin 1    +12 VDC
  1|  | 4  3  2  1 ||  pin 2    +12 Volts Return
  -+  +------------+|  pin 3    + 5 Volts Return
  ------------------+  pin 4    + 5 VDC



**********************************************************************
                      I   N   S   T   A   L   L
**********************************************************************
SEAGATE  ST15230N/ND  INSTALLATION GUIDE 77767474, REV. B  10/1994

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

 Installation direction
 ----------------------

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

 Disc drive mounting
 -------------------
 The drive may be mounted in any orientation.
 Mount to the host 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 .12 inch (3.05
 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).


 SCSI interface cable connection
 -------------------------------
 Models Hawk 4 family are SCSI interface drives. System connection is
 via a 50 pin SCSI connector. Some cables have a contrasting color
 strip 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.


 DC Power connection
 -------------------
 The drives receive DC power through a 4 pin connector mounted on the
 PCB next to the SCSI I/O connector.


 Bus termination
 ---------------
 Model "N" drives have an active terminator IC that is permanetly
 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 is installed on the last position on the last
 position on the right end of J2.


 Grounding
 ---------
 Signal ground (PCB) and HDA ground are connected together in the
 Hawk 4 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.


 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.



**********************************************************************
                      F   E   A   T   U   R   E  S
**********************************************************************
SEAGATE  ST15230N/ND  INSTALLATION GUIDE 77767474 REV. B  10/94


 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.


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


 SCSI interface drives
 ---------------------
 All SCSI interface drives are low-level formatted at the factory. You
 may wish to low-level format the drive to optimize its performance
 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.


 Initial set-up information
 --------------------------
 For the initial setup connect th ecables or plug into a mounted
 connector (if applicable), set the drive ID on the bus and enable
 or disable the I/O line terminator IC ("N" models).



**********************************************************************
                      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.


