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Hard Drive: SEAGATE: ST1480NV 426MB 3.5"/HH SCSI1 NOVE

S T 1 4 8 0 N V    SEAGATE
NO MORE PRODUCED                                      Native|  Translation
Form                 3.5"/HH               Cylinders    1476|     |     |
Capacity form/unform   426/  492 MB        Heads           9|     |     |
Seek time   / track  14.0/ 2.5 ms          Sector/track     |     |     |
Controller           SCSI1 NOVELL          Precompensation
Cache/Buffer            64 KB SEGMENTED    Landing Zone
Data transfer rate    2.588 MB/S int       Bytes/Sector      512
                      5.000 MB/S ext SYNC
Recording method     RLL 1/7                        operating  | non-operating
Supply voltage     5/12 V       Temperature *C         5 50    |    -40 70
Power: sleep              W     Humidity     %         8 80    |      5 95
       standby            W     Altitude    km    -0.305  3.048| -0.305 12.210
       idle           9.0 W     Shock        g        10       |     50
       seek               W     Rotation   RPM      4412
       read/write         W     Acoustic   dBA
       spin-up            W     ECC        Bit   48
                                MTBF         h     150000
                                Warranty Month        12
Lift/Lock/Park     YES          Certificates     CSA,SDA,FCC,IEC380,IEC435,...


SEAGATE ST1400N/1401N/1480N PRODUCT MANUAL 77765458-A

  +------------------------------------------------1--------+  1
  1-+-+                                          J5++++++   |XX Power
  |-| |J7                                          +----+   |XX J3
  |-+-+                                                     |
  |                                                         |X1 SCSI
  |                                                    +1   |XX I/O
  |                                                    ||   |XX J4
  |                                       I/O          ||   |XX
  |                                       Terminators  ++   |XX
  |                                                    +1   |XX
  |                                                    ||   |XX
  |                                                    ||   |XX
  |                                                    ++   |XX
  |                                                    +1   |XX
  |                                                    ||   |XX
  |                                                    ||   |XX
  |             +-----+J6                              ++   |XX
  |             +++++++                                     |XX


SEAGATE ST1400N/1401N/1480N PRODUCT MANUAL 77765458-A

Jumper setting

J6 Motor Start/Write Protect/Terminator Power

      |                      | 1  2  3  4  5  6  7  8|
      |Enable Motor Start    | o  X  o  o  o  o  o  o|
      |                      | 1  X  o  o  o  o  o  o|
      |Delay Motor Start     | o  o  x  o  o  o  o  o|
      |                      | o  o  X  o  o  o  o  o|
      |Write Protect         | o  o  o  x  o  o  o  o|
      |                      | o  o  o  X  o  o  o  o|
      |Parity Option         | o  o  o  o  x  o  o  o|
      |                      | o  o  o  o  X  o  o  o|
      |Terminator Power to   | o  o  o  o  o  o  x  o|
      |SCSI Bus              | o  o  o  o  o  o  X  o|
      |Terminator Power from | o  o  o  o  o  o  o  x|
      |Drive                 | o  o  o  o  o  o  o  X|
      |Terminator Power from | o  o  o  o  o  o  xxxx|
      |SCSI Bus              | o  o  o  o  o  o  o  o|

J6 1 For Factory use only

      2   CLOSED  Enables Motor Start option. The drive waits for the
                  Start unit command from the host before starting
                  spindle motor.
          OPEN    Drive operation depends on whether or not there is a
                  jumper in position 3.

      3   CLOSED  Enables the Delayed Motor Start option (if jumper in
                  position 3 is off). Motor start delay is 16 times
                  the drive ID number in seconds; i.e., drive ID 0
                  immediately, drive one starts 16 seconds later etc.

      4  CLOSED   Entire drive is write protected.

      5  CLOSED   Parity checking by the drive is enabled.

      6           Reserved for later use.

      7,8         Select terminator power source. In position 7 drive
                  supplies power to the SCSI bus, pin 26. In position
                  8 the drive supplies power only to its own
                  terminators. Jumper horizontally, lower part,
                  between positions 7 and 8 means drive takes power
                  from the SCSI bus, pin 26. Jumpers on both 7 and 8
                  at the same time is allowed.

      |            | 1  2  3  |
      |SCSI ID = 0 | o  o  1  |
      |            | o  o  o  |
      |SCSI ID = 1 | o  o  x  |
      |            | o  o  X  |
      |SCSI ID = 2 | o  x  o  |
      |            | o  X  o  |
      |SCSI ID = 3 | o  x  x  |
      |            | o  X  X  |
      |SCSI ID = 4 | x  o  o  |
      |            | X  o  o  |
      |SCSI ID = 5 | x  o  x  |
      |            | X  o  X  |
      |SCSI ID = 6 | x  x  o  |
      |            | X  X  o  |
      |SCSI ID = 7 | x  x  x  |
      |            | X  X  X  |

      |            | 1  2  3  4  5 |
      |SCSI ID = 0 | o  o  o  o  o |
      |            | 1  o  o  o  o |
      |SCSI ID = 1 | o  o  x  o  o |
      |            | o  o  X  o  o |
      |SCSI ID = 2 | o  x  o  o  o |
      |            | o  X  o  o  o |
      |SCSI ID = 3 | o  x  x  o  o |
      |            | o  X  X  o  o |
      |SCSI ID = 4 | x  o  o  o  o |
      |            | X  o  o  o  o |
      |SCSI ID = 5 | x  o  x  o  o |
      |            | X  o  X  o  o |
      |SCSI ID = 6 | x  x  o  o  o |
      |            | X  X  o  o  o |
      |SCSI ID = 7 | x  x  x  o  o |
      |            | X  X  X  o  o |
      |Sync Spindle| o  o  o  x  o |
      |            | o  o  o  X  o |
      |Remote LED  | o  o  o  o  x |
      |            | o  o  o  o  X |

Either J5 or J7 may be used to select drive ID. Both should not be
used at the same time. The drive ID is binary coded positionwise
(least significant position on the right), i.e. jumper in position
1 is drive ID 1 etc.

 J7  Sync Spindle
 4   Used as a cable connection for the REF Index/+L signal
     for sync spindle feature. When no cable is connected, a jumper
     must be installed. OEM standard drives are shipped with jumper

 J7  Remote LED
 5   Used if needed for a connection to a remotely located LED
     indicator.Pin 10 (bottom), the anode connection, connects in the
     drive to the +5V supply through a pull-up resistor. Pin 9
     (top), the cathode connection connects in the drive to signal
     common through the emitter-collector jumction of a transistor
     switch that controls the LED on/off condition.

 50-Pin Single-ended cable Pin Assignments
 (Nonshielded Connector)
    Signal    Pin No.    Signal     Pin No.
    -DB(0)       2       Ground       28
    -DB(1)       4       Ground       30
    -DB(2)       6       -ATN         32
    -DB(3)       8       Ground       34
    -DB(4)      10       -BSY         36
    -DB(5)      12       -ACK         38
    -DB(6)      14       -RST         40
    -DB(7)      16       -MSG         42
    -DB(P)      18       -SEL         44
    Ground      20       -C/D         46
    Ground      22       -REQ         48
    Ground      24       -I/O         50
    TERMPWR     26

  Note: All odd pins, except pin-25 are connected to ground. Pin-25
        is left open.

Pin 25 must not be connected to ground at the HOST end or the drive
end of the cable. If the I/O connector should accidentally be plugged
in upside down, terminator power on Pin 26 will be shorted to ground.

The minus sign next to the signals indicates asserted state is the
low voltage of the two levels used for logic signals.

 J3   DC Power and pin connector assignments
      +------------+     1 = + 12 V
    --+ 4  3  2  1 +--   2 = + 12 V Return
      +------------+     3 = +  5 V Return
                         4 = +  5 V


SEAGATE ST1400N/1401N/1480N PRODUCT MANUAL 77765458-A

Notes on installation

Drive Orientation
The balanced rotary arm actuator design of the drive allows it to
be mounted in any orientation. All drive performance characterization
however, has been done with the drive in horizontal (disc level) and
vertical (drive on its side) orientations, and these are the two
preferred mounting orientations.

The drive is designed, manufactured, and tested with a "Plug-in and
Play" installation philosophy. This philosophy minimizes the
requirements for highly trained personnel to integrate the drive
into an OEM's system, whetherin a factory or field environment.

 - Insure that the SCSI ID of the drive is not the same as the host
   adapter. Most host adapters use SCSI ID 7.

 - If multiple devices are on the bus insure that the SCSI ID of the
   drive is not already used by other devices on the bus.

 - If the drive is the only device on the bus it should be attached to
   end of the SCSI bus cable, and terminators should be installed
   (provided external terminators are not used).

 - If the drive is attached to a bus already containing other devices,
   and the drive is not attached to the end of the bus, the
   terminators should be removed.

 - Set all appropriate option jumpers for desired operation prior to
   power on. If jumpers are changed after power has been applied the
   drive must be power cycled for the new settings to be affect.

 - In all cases additional drives or software will be necessary to
   logically install the drive onto the system.

Cabinet cooling must be designed by the customer so that the
ambient temperature immediately surrounding the drive will not exceed
temperature conditions. Specific consideration should be given to
make sure adequate air circulation is present around the components
on the PWA at the rear of the drive.

Service Tools
No special tools are required for site installation or recommended
for site maintenance. The depot repair philosophy of the drive
precludes the necessity for special tools. If field repair of items
external to the HDA is desired, a 6 point Torx T10 driver is
required. This may be purchased through most commercial tool

Air Cleanliness
The drive is designed to operate in a typical office environment with
minimal environment control.

Physical Description
The drive may be chained together
or with other compatible SCSI devices using a common cable. Both end
of the cable must be terminated. The drive implements single ended
drivers and receivers which allow a maximum cable length of six
metres (19.6 feet) (primarily for connection within a cabinet). All
signals are common between all SCSI devices. The drive may be daisy-
chained only with SCSI devices having the same type drivers and re-
ceivers. Devices having single-ended interface circuits cannot be on
on the same daisy chain with devices having differential interface
circuits. A maximum of 8 SCSI devices (including the Host) may be
daisy chained together. The SCSI device at both ends of the daisy
chain are to be terminated. Intermediate SCSI devices shall not be
terminated. Remove the terminator resistor packs, not the terminator
power source selector jumper.

Cable Characteristics
Only nonshielded cable connectors are applicable. A 50 conductor flat
cable or 25 twisted pair cable shall be used. The maximum total cable
length shall be 6.0 metres more than 0.1 metre off the mainline
interconnection within any connected equipment. An ideal impedance
match with cable terminators implies a cable characteristic impedance
of 132 ohm. In general, cables having characteristic impedance of
those values are not available; however impedances that are somewhat
lower are satisfactory. A characteristic impedance of 100 ohm 10%
is recommended for unshielded flat or twisted pair ribbon cable.
However, most available cables have a somewhat lower characteristic
impedance. To minimize discontinuities and signal reflections, cables
of different impedances should not be used in the same bus.
Implementations may require trade-offs in shielding effectiveness,
cable length, the number of loads, transfer rates, and cost to
achieve satisfactory system operation. If shielded and unshielded
cables are mixed within the same SCSI bus, the effect of impedance
mismatch must be carefully considered.

A minimum conductor
size of 28 AWG should be used to minimize noise effects.

 Suggested nonshielded flat cable part numbers are:
   Flat cable -   35M-3365-50
   Twisted pair - Spectra Twist in flat 455-248-50
 Equivalent parts may be used.

    |       +--+ HOST ADAPTER/INITIATOR ***    |
    |       |T |                               |
             |                1 thru 8 SCSI devices
           **|             **|              |*
    +--------+---+ +---------+--+ +--------++-++
    |Disc Drive  | |Disc Drive  | |Disc    | T||
    |or other    | |or other    | |Drive or+--+|
    |SCSI device | |SCSI device | |other SCSI  |
    +------------+ +------------+ +------------+

 *    Closed end type connector used
 **   Open type (in-line application) Connector used.
 ***  Host need not beon the end of the daisy chain. Another device
      can be on the end with the terminator, the host having no

T indicates termination required.

DC Cable and Connector
The drive receives DC power through a 4 pin rigth angle connector
mounted on the servo PWA. Recommended part numbers for the mating
connector are listed below, but equivalent parts may be used.

Type of cable: 18 AWG
Connector: AMP 1-480424-0
Contacts: AMP 60619-4 (Loose Piece); AMP 61117-4 (Strip)

Connector Requirements
The nonshielded cable connector shall be a 50 conductor connector
consisting of two rows of 25 female contacts with adjacent contents
100 mils apart.

Recommended Mating Flat Cable Connector Part Numbers are:

Closed end 3M-3425-7000 W/O Strain Relief, No Center Key
(for cable 3M-3425-7050 With Strain Relief, No Center Key
ends) Dupont-66900-290 With Strain Relief, With Center Key

Open end 3M-3425-6000 W/O Strain Relief, No Center Key
(In Daisy- 3M-3425-6050 With Strain Relief, No Center Key
chain) Dupont-66900-250 With Strain Relief, With Center Key

The drive device connector is a nonshielded 50 conductor connector
consisting of two rows of 25 male pins with adjacent pins 100 mils
apart. The connector is keyed. The drive connector Part Number:
Dupont 88049-002 or equivalent.

Drive Termination
This otpion may be incorporated during manufacture at the request of
the customer. For single ended interface drives, termination consists
of three 220/330 ohm resistor modules (SIP's) which are installed on
the Main PWA via sockets.
The Reference Index Signal is terminated with a 2K ohm resistor. The
termination resistor is permanetly installed in each drive in the
reference signal daisy chain.

Terminator Power
The drive may be configured to accept terminator power via pin 26 of
the SCSI Bus, to supply power to the SCSI bus or to provide
terminator power for optional internal termination resistors via the
drive power connector. The drive can provide power both to its own
terminators and to the SCSI Bus terminator power line (Pin 26).

SCSI devices providing termination power (TERMPWR) shall have the
following characteristics:

   V TERM = 4.0 V to 5.25 V
   800 mA min source drive capability
   1.0 A maximum

Synchronized Spindle operation
The interface consists of a twisted pair cable that connects the
drives in the synchronized system in a daisy chain configuration.
Master/slave operation will be automatically set by the drives in
the system at power up time, or each drive in the system can be
configured by the host (using Mode Select command) to operate in
either the master or slave mode. While loading heads after power up,
a drive checks for occurrences of the reference index signal. Drives
can be re-configured by the host any time after power up to be
master or slave by use of the Mode Select command Rigid Disc Drive
Geometry page. The master provides the reference signal to which all
other drives phase lock, including the master. There is only one
master per system, and that can be a drive or the host computer. All
drives may be configured as slaves allowing the host to provide the
reference signal. All drives default to the synchronious mode when
powered up.
Each drive can later be configured for the non-synchronized mode in
which it ignores the reference index signal that might be present.
The connection to the host is required only if the host is to
provide the reference signal. If the host does not provide the
reference signal, the host should not be connected.


SEAGATE ST1400N/1401N/1480N PRODUCT MANUAL 77765458-A

The drive has been developed as a system peripherals to the highest
standards of design and construction. The drives depends upon its
host equipment to provide adequate power and environment in order to
achieve optimum performance and compliance with applicable industry
and governmental regualations. Special attention must be given in the
areas of safety, power distribution, shielding, audible noise
control, and temperature regulation.

The drive is a UL Recognized component per UL 478 and a CSA Certified
Component per CSA C22.2, No. 220-M1986. It also meets the
requirements of DIN IEC 380/VDE 0806/8.81, DIN IEC 435/VDE 0805/11.84
and EN 60 950/9.87.

The drive, as delivered, is designed for system integration before
use. It is supplied as a component or subassembly as defined in the
FCC Rules and Regulations, Part 15, Subpart J governing EMI of
computing devices end the Radio Interference Regulations of the
Canadian Department of Communications. The drive is, therefore not
directly subject to the FCC rules and regulations or the Radio
Interference Regulations of the Canadian Department of

Media Description
The media used on the drive has a diameter of approximately 3.5
inches (89mm). The aluminium substrate is coated with a thin film
magnetic material, overcoated with a proprietary protective layer
for improved durability and environmental protection.

Defect and Error Management
The drive, as delivered, complies with this specification. The read
error rate and specified storage capacity are not dependent upon use
of defect management routines by the host (initiator).

Defect and error management in the SCSI systm involves the drive
internal defect/error management and SCSI systems error
considerations (errors in communications between Initiator and the

Power Sequencing
Power sequencing is not required for the drive. The drive protects
against inadvertent writing during power up and down. Daisychain
operation requires that power be maintained on the terminated unit
to ensure proper termination of the peripherals I/O cables.

The drive will meet all specification over 41*F to 122*F (5*C to
50*C) operating ambient temperature range with a maximum gradient of
36* F (20* C) per hour.

Heat/Power Dissipation
Typical dissipation is 12 watts (41 BTUs per hour) of DC power
average at nominal voltages. Typical power dissipation under idle
conditions is no greater than 9 watts (30.7 BTUs per hour).

 Seek Time
                      Drive Level
                                          | ST1400N|        |
                                          | ST1480N| ST1401N|
        Track-to-Track         msec. typ. |   2.5  |   2.5  |
                               msec. max. |   4.5  |   4.5  |
                       Average msec. typ. |  14    |  12    |
                       Average msec. max. |  16    |  14    |
        Full Stroke            msec. typ. |  26    |  24    |
                               msec. max. |  32    |  28    |
        Latency                msec. avg. |   6.80 |   6.80 |

                      Including Controller Overhead
                      (without disconnect)
                                          | ST1400N|        |
                                          | ST1480N| ST1401N|
        Track-to-Track         msec. typ. |   3.1  |   3.1  |
                               msec. max. |   5.1  |   5.1  |
                       Average msec. typ. |  14.7  |  12.7  |
                       Average msec. max. |  16.7  |  14.7  |
        Full Stroke            msec. typ. |  26.7  |  24.7  |
                               msec. max. |  32.8  |  28.8  |
        Latency                msec. avg. |   6.80 |   6.80 |



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.

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

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

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
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.

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