seagate ST32430N, ST31231N, ST32430ND, ST31230N, ST31230ND Installation guide

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

HAWK 2LP Family:

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST32430N/ND

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST31230N/ND

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

ST31231N

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation Guide

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents

Introduction ...................................................................... 1

Electromagnetic interference ........................................... 1

Before you begin.............................................................. 3

Installation overview ........................................................ 8

Product Repair ................................................................. 10

Shipping.................................................................... 11

Product Repair and return information ..................... 11

Technical support services .............................................. 12

Hawk 2LP family product information .............................. 15

Initial set-up information................................................... 17

Drive configuration ........................................................... 22

Drive installation .............................................................. 30

© 1995 Seagate Technology, Inc. All rights reserved
Publication Number: 77767499, Revision A
September 1995

®

Seagate
registered trademarks of Seagate Technology, Inc. HawkTM,
SeaFAXTM, SeaFONETM, SeaTDDTM, and SeaBOARDTM, are
trademarks of Seagate Technology, Inc. Other product names
are registered trademarks or trademarks of their own.

Seagate reserves the right to change, without notice, product
offerings or specifications. No part of this publication may be
reproduced in any form without written permission of Seagate
Technology, Inc.

, Seagate Technology® and the Seagate logo are

Hawk 2LP Family Installation Guide, Rev. A 1

____________________________________________________________________________________________________________

Introduction

This manual is organized to assist you in the installation and
operation of your Seagate Hawk 2LP Family disc drive. Family
models are listed in Hawk 2LP Family Product Information
section. It also provides information to aid in obtaining service
for the drive.

Before attempting any installation, please read through all
applicable sections of this document, including all warnings
and cautions.

Warning.

This equipment generates, uses, and can radiate radio
frequency energy and if not installed and used in accordance
with these instructions, may cause interference to radio com­munications.

Electromagnetic interference (EMI) considerations

The drive(s) described herein, as delivered, are designed for
system integration and installation into a suitable enclosure
prior to use. As such, the drive(s) described herein are sup­plied as a sub-assembly and are not subject to Subpart J of
Part 15 of the FCC Rules and Regulations nor the Radio
Interference Regulations of the Canadian Department of Com­munications. However, the unit has been tested using proper
shielding and grounding and found to be compliant with the
Class A limits of the FCC Rules and the Regulations of the
Canadian Department of Communications.

2 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

The physical design characteristics of the drive(s) described
herein, serve to minimize EMI radiation when installed in an
enclosure that provides reasonable shielding. As such, the
drive(s) are capable of meeting the Class B limits of the FCC
Rules and the Regulations of the Canadian Department of
Communications.

Note. It is the end users' responsibility to assure that the

drive(s) described herein meet the appropriate EMI
requirements of their system. Shielded I/O cables
may be required if the enclosure does not provide
adequate shielding. If I/O cables are external to the
enclosure, shielded cables should be used, with the
shields grounded to the enclosure and to the host
controller.

Hawk 2LP Family Installation Guide, Rev. A 3
_____________________________________________________________________________________________________________

Before you begin

Verify that the system is switched off and disconnected
from main power before any installation is attempted.

Protect yourself, the drive, and your valuable programs
and data by reading the following cautions and warnings.

• Do not tamper with sealed top cover. Doing so voids your
warranty. The drive contains no user serviceable compo­nents. See Product Repair section for more information.

• Visually inspect the shipping container for any obvious
damage.

• Verify all parts listed on shipping bill are received with the
equipment. Discrepancies or damage should be reported to
the shipping company.

• Inspect drive for possible shipping damage. All claims of this
type should be filed promptly with the transporter involved.
Save original packing materials to be used when reshipping.

4 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

• When transporting or shipping a drive or system, please
ensure that they are correctly packed in original Seagate
approved (or equivalent) container and shipped via an air­ride carrier experienced in handling computer equipment.

• Do not unpack drive from its static shielded bag until you are
ready to install it in the system.

• Always handle the drive by the frame or casting.

• Do not touch Printed Circuit Board (PCB) or the I/O connec­tor pins.

• Never apply pressure to the PCB or to the drive top cover

Caution. The circuit assemblies and components contained

in this equipment can be degraded or destroyed by
Electrostatic Overstress (EOS) or by Electrostatic
Discharge (ESD).

Hawk 2LP Family Installation Guide, Rev. A 5

_________________________________________________________________________________________________________________

Static electrical charges can accumulate quickly
on personnel, clothing and synthetic materials. The
electrostatic fields due to these charges when
brought in close proximity to susceptible circuit
assemblies and components, can result in de­graded reliability or immediate failure of the affect­ed component or assembly.

To insure optimum reliable equipment operation, it
is required that technical support personnel dis­charge themselves by wearing a grounding strap
around the wrist and be connected to a grounding
terminal while working in the vicinity of, and while
handling EOS/ESD susceptible assemblies/parts.
If unavailable, ground yourself frequently by touch­ing the metal chassis of the system before handling
any components (this helps only if the system is
connected to a ground).

peted areas.

This procedure is especially impor-

Avoid static-inducing car-

tant when handling printed circuit boards (PCB's).

6 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

Safety instructions

1. The disc drive(s) are to be installed in a customer supplied

enclosure where the surrounding air does not exceed

o

50

C.

2. Four (4) 6-32 UNC-2A screws are required for installation.

Maximum screw length into side of drive is 0.15 inches
(3.81 mm). Maximum screw length into bottom is 0.20 in.
(5.08 mm). Screw tightening torques is 6.0 lb-in (.675 NM)
max with minimum thread engagement of 0.12 in (3.00
mm).

3. The power requirements are shown in the Product Infor-

mation section.

4. The power supply must satisfy the safety requirements for

SELV (Safety Extra Low Voltage) circuits.

5. Service is to be provided by trained Seagate service

personnel.

6. The incorporation of the disc drives listed in this guide into

a customer enclosure must meet the appropriate safety
requirements of the country in which it is used (e.g. UL
1950, CAN/CSA-C22.2 No. 950-M89, DIN VDE 0805:1993
and EN60950: 1992 (IEC 950).

Note

Power must be off when connecting or disconnecting.

Hawk 2LP Family Installation Guide, Rev. A 7
_____________________________________________________________________________________________________________

Sicherheitsanleitung

1. Däs Gerät ist ein Einbaugerät, vorgesehen für eine
maximale Umgebungstemperatur von 50

o

C.

2. Zur Befestigung der Drive werden 4 Schrauben benötigt
(6-32 UNC-2A). Die maximale Länge der Schrauben in
der unteren Seite des Chassis darf nicht mehr als 0.20 in
(5.08 mm) betragen, die in der Seiten 0.15 in (3.81 mm).
Maximalle Schraubenanziehung von 6.0 in-lb (.675 NM)
mit minimalem Gewindeansperuch .12 in (3.00 mm).

3. Die Versorgungsspannungen werden in der Sektion
Produkt Information gezeigt.

4. Die Versorgungsspannung muss SELV entsprechen.

5. Alle Arbeiten dürfen nur von ausgebildetem Seagate
Service-Personal durchgefürhrt werden.

6. Der Einbau des Drives muss den Anforderungen gemäss
DIN VDE 0805:1993 oder EN60950:1992 (IEC 950).

Vorsicht

Ánsehluss oder Entfernung oler Geräteverbindung nur bei
abgeschalteter Versorgungsspannung vornehmen.

8 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

Installation Overview

Installation of the drive can be divided into distinct phases.
Some of these may not be applicable to all system installation
requirements. Refer to the individual drive installation sections
for specific information on your drive model.

• Drive configuration: Select those drive features that are
appropriate to install the drive in the system. This is done by
installing or removing user configuration jumpers found on
the drive PCB.

• 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.

• 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.

Hawk 2LP Family Installation Guide, Rev. A 9
_____________________________________________________________________________________________________________

• 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
sub-divided 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.

10 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

Product repair information

Service requirements
The special facilities required for the manufacture of these

drives generally prohibit repair in the field. If problems occur
during installation, please contact your supplier for assistance.
Do not attempt to disassemble or repair. Drives should be sent
to the repair depot through the purchase source, if possible.
Please observe the following cautions.

Caution.

• Handle drive with care. Do not drop, or bump hard.

• Never remove the cover of these disc drives. Servicing
items in the sealed HDA (heads, media, actuator, etc.)
require special facilities. The drive contains no user pur­chasable parts or PCBs.

• Opening the sealed HDA voids the drive warranty.

• Applying a soldering device to the components on the PCB
voids the drive warranty.

• Do not connect or disconnect cables without first removing
power from the drive.

Hawk 2LP Family Installation Guide, Rev. A 11
_____________________________________________________________________________________________________________

• Place drive on a flat, static dissipative surface and handle
with extreme care. Always follow all EOS/ESD precautions
to avoid damage to the electrical assemblies.

Shipping: When transporting or shipping a drive, a Seagate
approved container must be used. Keep your original box.
They are easily identified by the Seagate Approved Package
label. Shipping a drive in a non-approved container voids the
drive warranty.

Seagate repair centers may refuse receipt of components
improperly packaged or obviously damaged in transit. Contact
your Authorized Seagate Distributor to purchase additional
boxes. Seagate recommends shipping by an air-ride carrier
experienced in handling computer equipment.

Product repair and return information

Seagate customer service centers are the only facilities autho­rized to service Seagate drives. Seagate does not sanction
any third-party repair facilities. Any unauthorized repair or
tampering with the factory-seal voids the warranty.

12 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

Warranty: Contact your Seagate Authorized Distributor, Dealer
or other purchase source for warranty information.

If the drive is no longer under warranty contact purchase
source for repair information or refer to numbers listed in
section Technical Support Services.

Technical support services

Seagate Technology provides technical support literature and
diagnostic utilities to Authorized Distributors. Please contact
your dealer for technical support and installation troubleshoot­ing. Product Technical Support is available for all Seagate
products by calling the SeaFAX, SeaFONE, SeaTDD or
SeaBOARD services. These are toll calls.

SeaFAX number : 408/438-2620

You can use a Touch-Tone telephone to access Seagate's
automated FAX delivery system and select technical support
information by return FAX. This service is available 24 hours a
day, 7 days a week.

Hawk 2LP Family Installation Guide, Rev. A 13

_________________________________________________________________________________________________________________

SeaFONE telephone number: 408/438-8222

The enhanced phone system provides recorded technical
information on selected Seagate products while you are on
hold. Technical support specialists are available to answer
questions from 8:00 AM to 5:00PM PST, Monday through
Friday. Recordings are accessible 24 hours a day, 7 days a
week.

SeaTDD telephone number: 408/438-5382

TDD is a Telecommunication Device for the Deaf where two
people can communicate using a keyboard that is connected
to the phone line. A TDD device is required to access this
service. This service is available from 8:00 AM to 5:00 PM PST,
Monday through Friday.

SeaBOARD service:

The Seagate Technical Support Bulletin Board System (BBS)
is available 24 hours a day, 7 days a week. A modem is
required to access this service. The communications software
must be set for eight data bits, no parity and one stop bit (8N1).

14 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

With this service you can access:

• Specifications and jumper configurations for all Seagate
products.

• Reprints of Seagate documentation.

• A directory of information and helpful utilities that you can
download to your own computer.

BBS Modem Maximum
Location Number Baud Rate

United States 408-438-8771 9600
England 44-62-847-8011 9600
Germany 49-89-140-9331 2400
Singapore 65-227-2217 9600
Australia 61-2-756-2359 9600

Note: These are toll calls

Hawk 2LP Family Installation Guide, Rev. A 15
_______________________________________________________________________________________________________________

Hawk 2LP Family product information

Characteristics of the various drives covered by this manual
are listed in the following table.

Legend for table column meanings:

A = capacity, unformatted Gigabytes
B = capacity, formatted megabytes [1]
C = number of cylinders, user accessible
D = number of heads
E = + 5 V typical current [2], Amps
F = +12 V typical current [2], Amps

Model A B C D E F

ST32430N 2.59 2.14 3992 9 0.80 0.40
ST32430ND 2.59 2.14 3992 9 0.90 0.40
ST31230N 1.28 1.06 3992 5 0.80 0.40
ST31230ND 1.28 1.06 3992 5 0.90 0.40
ST31231N 1.28 1.06 3992 5 0.90 0.40

16 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

Notes.

[1] Standard units are factory formatted with 512 data bytes

per sector with one spare sector per track and 2 cylinders
at inner tracks reserved for spares in addition to capacity
listed. All spare sectors are on one track.

[2] Measured with an average reading DC ammeter. Instan-

taneous +12 V current peaks will exceed these values.

Hawk 2LP Family Installation Guide, Rev. A 17
_____________________________________________________________________________________________________________

Initial set-up information

For the initial setup connect the cables 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). These
procedures are described in paragraphs following. Note
whether drive model number ends in N or ND.

SCSI interface cable connection

Models Hawk 2LP family are SCSI interface drives. System
connection is via a 50 pin SCSI connector. Pin 1 is noted in
Figure 2. 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.

18 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

DC Power connection

The drives receive DC power through a 4 pin connector
mounted on the PCB next to the SCSI I/O connector. See figure
below.

50 Pin

SCSI I/O

Connector

DC Power
Connector

4321

Pin

Power

+12V

1

+12V RET

2

+ 5V RET

3

+ 5V

4

Figure 1. DC power connection, 50 pin SCSI I/O

connector

SCSI address selection

Make sure that the SCSI bus address jumper(s) are properly
set for the bus address assigned to the drive. See figures 3a
and 3b showing the bus address select header and the jumper
configurations that select addresses 0 through 7. 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.

Hawk 2LP Family Installation Guide, Rev. A 19
_____________________________________________________________________________________________________________

Bus termination

Model "N" drives have an active terminator IC that is perma­nently installed, but can be enabled or disabled by a jumper
plug. See jumper in Figure 3a. 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. See Figure
3a.

20 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

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.

Optional parity bit enable

Some systems require parity bit checking. Consult the system
documentation for the specific requirements. See Figure 3a for
location of Parity Bit enable jumper. 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.

Hawk 2LP Family Installation Guide, Rev. A 21
________________________________________________

Pin 1

50 Pin

SCSI I/O

Connector

J5

J2

J6

Figure 2. Hawk 2LP family N/ND model drives

I/O connection (50 pin SCSI I/O connector).
"N" model drive terminators (not visible)
are not removable.

22 Hawk 2LP Family Installation Guide, Rev. A
____________________________________________________________________________________________________________

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. See notes following Figure 3b.

Hawk 2LP family N/ND models (50 pin SCSI I/O)

On Model N/ND drives

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. The following figures show
where these headers are located on the different drives cov­ered by this manual. See notes following Figures 3a and 3b
where explanations are given about the purpose of each
jumper and specify the standard factory (called "default")
settings of these jumpers (i.e., settings used for most common
single drive application). Changes to these settings should be
made only if it is known that the system requires a different
configuration.

either J6 (on the front of the drive) or

Hawk 2LP Family Installation Guide, Rev. A 23
_____________________________________________________________________________________________________________

SCSI I/O

Connector

Pin 1

J5

J1

Drive with HDA up,
PCB down, viewed

from front

Pin 1

HDA

See Figure 3b

Pin 1 End

J6

Drive Front

J6

S

L

Reserved

A2A1A

SCSI ID = 0

SCSI ID = 1

SCSI ID = 2

SCSI ID = 3

SCSI ID = 4

SCSI ID = 5

SCSI ID = 6

SCSI ID = 7

Reserved

Remote

LED

Shipped with

(retain cover, do not install jumpers)

cover installed

R

S

E

E

P

D

S

0

3
4

Jumper

Positions

Delay Motor Start
Enable Motor Start

Write Protect
Parity Option

Enable

Terminators

Term. Power

from Drive

Term. Power

to SCSI Bus

Term. Power

from SCSI Bus

CATH

DC Power
Connector

J2

J2











T

D

M

W

P

E

S

E

P

E

Position A

Figure 3a. Drive configurator, Hawk 2LP family

N/ND models

Pin 1







S

T

T

S

P

P

[2]
[2]

[2]

24 Hawk 2LP Family Installation Guide, Rev. A
______________________________________________________________________________________________________________

Side View of Drive

A0A1A

HDA

2

J1

J6

Drive Front

50 pin SCSI connector

SCSI I/O

Connector

DC Power
Connector

J2

Pin 1

J5

SCSI ID = 0
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7

Figure 3b. Drive configurator, Hawk 2LP family

N/ND models

Pin 1

J5

J1

Hawk 2LP Family Installation Guide, Rev. A 25
_____________________________________________________________________________________________________________

Notes for Figure 3a and 3b:

[1] Notes explaining the functions of the various jumpers on

jumper header connectors J2, J5 and J6 are given below
in left to right order of jumper position. The term "default"
means as standard OEM units are configured when shipped
from factory. "Off" means no jumper is installed; "On"
means a jumper is installed. Off or On
default condition.

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

[2] "ND" models do not have terminators on the drive PCB, so

these jumpers are not applicable.

underlined is factory

26 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

J2 Jumper
Position Jumper Function Description

TE (Applies to "N" models only)

On With the jumper installed, the On-board (non-re-

movable) terminator circuits are enabled (con­nected to the I/O lines). Default is jumper installed.

Off Terminator circuits are disabled.

DS ME

Off Off Spindle starts immediately after power up - Default

setting.

Off On Drive spindle does not start until Start Unit com-

mand 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.

Hawk 2LP Family Installation Guide, Rev. A 27
______________________________________________________________________________________________________________

J2 continued from previous page

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.

TP TP

Off Off No terminator power is connected to drive termina-

tors 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 termina­tors (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.

28 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

continued from previous page

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.

J5 Jumper Jumper Function Description
Installation ("N" and "ND" models only)

A0,A1,A

Drive ID on SCSI Bus (J6 may be used instead).

2

The drive ID is binary coded positionwise i.e.,
jumper in position A2 is drive ID 4, in position A1 is
ID 2, position A0 is ID 1 and no jumpers is ID 0.

Default is ID = 0.

J6 Jumper
Installation Jumper Function Description

A2,A1,A

Drive ID on SCSI bus. On "N" and "ND" models,

0

either J5 or J6 (optional) may be used to select
drive ID. Both should not be used at the same
time, because at some future time when the ID is
changed the user could fail to configure both J5
and J6 the same. Default is ID = 0.

Hawk 2LP Family Installation Guide, Rev. A 29
______________________________________________________________

J6 continued from previous page

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.

30 Hawk 2LP Family Installation Guide, Rev. A
________________________________________________

Drive installation

This section describes the physical mounting of the drive in the
host cabinet and the logical installation as a system member,
which is called drive setup.

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.

• 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. See Figure 6. 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 (3.0 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).

Hawk 2LP Family Installation Guide, Rev. A 31
________________________________________________

• Verify that all connections between the drive and the host
system are correctly installed. Most cables have a contrast­ing color stripe indicating pin 1. Pin 1 on the drive I/O
connector and the DC power connector are indicated in the
figures in the Initial Set-up Information section.

• Verify option select and drive ID select jumpers and instal­lation of terminator enable jumper where applicable. See
Drive Configuration section.

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.

• Boot the system from the floppy drive or from a previously
installed hard-drive if there is one.

• Proceed with drive setup of the new hard drive.

32 Hawk 2LP Family Installation Guide, Rev. A
_____________________________________________________________________________________________________________

[3]

C

D

[1]

G

F

A

Notes:

[1] Mounting holes three on each side, 6-32 UNC.
Max screw length into side of drive 0.15 in.
(3.81 mm). Maximum torque 6 in-lb (.675 NM).
Min. thread engagement 0.12 in. (3.0 mm).

[2] Mounting holes four on bottom, 6-32 UNC.
Max screw length into bottom of drive 0.20 in.

B

J

(5.08 mm). Maximum torque 6 in-lb (.675 NM).
Min. thread engagement 0.12 in. (3.0 mm).

[3] Power and interface connectors can extend
past the "A" dimension by 0.040 in. (1.02 mm).

[4]

L

E

[4] Decorative front panel (optional).

Inches

[2]

H

K

N

[4]

M

5.74

A

4.00

B

1.00

C

2.362

D

.620

E

4.000

F

.250

G

1.750

H

3.750

J

2.370

K

P

1.00

L

4.000

M

0.19

N

0.015

P

± .010
± .010
+ .026
– .010
± .010
± .010
± .010
+ .010
– .005
± .010
± .010
± .010
+ .026
– .010
± .010
± .010
max

Millimeters

145.80

101.60

25.40

60.00

15.75

101.60

6.35

44.45

95.25

60.20

25.40

101.60

4.83

0.381

± .25
± .25
+ .66
– .25
± .25
± .25
± .25
+ .25
– .12
± .25
± .25
± .25
+ .66
– .25
± .25
± .25
max

Figure 4. Hawk 2LP family N/ND model mounting

dimensions (50 pin SCSI I/O connector)

Hawk 2LP Family Installation Guide, Rev. A 33
_____________________________________________________________________________________________________________

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.

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
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. Consult your DOS manual for FORMAT and FDISK
command options.

Seagate Technology, Inc.
920 Disc Drive, Scotts Valley, CA. 95066-4544, USA

Publication Number: 77767499, Rev. A Printed in USA