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HAWK 4 Family:
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ST15230N/ND
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Installation Guide
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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 4 family product information........................15
Initial set-up information........................................ 17
Drive configuration................................................ 22
Drive installation ...................................................30
© 1994 Seagate Technology, Inc. All rights reserved
Publication Number: 77767474, Revision B
October 1994
Seagate®, Seagate Technology® and the Seagate logo
are 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.
Hawk 4 Family Installation Guide, Rev. B 1
_________________________________________________________________________________________________________
Introduction
This manual is organized to assist you in the installation
and operation of your Seagate Hawk 4 Family disc
drive. Family models are listed in Hawk 4 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
2 Hawk 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
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.
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 4 Family Installation Guide, Rev. B 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 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
• 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 air-ride 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 con-
tained in this equipment can be degraded or
destroyed by Electrostatic Overstress (EOS)
or by Electrostatic Discharge (ESD).
Hawk 4 Family Installation Guide, Rev. B 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).
Avoid static-inducing carpeted areas.
This
procedure is especially important when handling printed circuit boards (PCB's).
6 Hawk 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
Safety instructions
1. The disc drive(s) are to be installed in a customer
supplied enclosure where the surrounding air does
not exceed 50oC.
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 (3.05 mm).
3. The power requirements are shown in the Product
Information 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 4 Family Installation Guide, Rev. B 7
_____________________________________________________________________________________________________________
Sicherheitsanleitung
1. Däs Gerät ist ein Einbaugerät, vorgesehen für eine
maximale Umgebungstemperatur von 50oC.
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 (3.05 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 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
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 4 Family Installation Guide, Rev. B 9
_____________________________________________________________________________________________________________
• Low-Level formatting: All Hawk 4 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 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
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 4 Family Installation Guide, Rev. B 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 nonapproved 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 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
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 4 Family Installation Guide, Rev. B 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 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
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 4 Family Installation Guide, Rev. B 15
_____________________________________________________________________________________________________________
Hawk 4 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 Gigabytes [1]
C = number of cylinders, user accessible
D = number of heads
E = + 5 V typical operating current [2], Amps
F = +12 V typical operating current [2], Amps
G = +12 V typical start current [2], Amps
Model A B C D E F G
ST15230N 5.1704.2943992 19 0.80 0.62 2.4
ST15230ND 5.1704.2943992 19 0.90 0.62 2.4
Operating Environment
Ambient temperature [4] 5° to 50°C
HDA max temperature [3] 60°C
16 Hawk 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
Notes.
[1] Standard units are factory formatted with 512 data
bytes per sector with twelve spare sectors per
cylinder and 2 cylinders at inner tracks reserved for
spares in addition to capacity listed.
[2] Measured with an average reading DC ammeter.
Instantaneous +12 V current peaks will exceed
these values.
[3] Maximum measured at any location on top cover.
No location on top cover should exceed this temperature.
[4] For best reliability keep below 35°C (95°F). Make
sure cables do not obstruct air flow.
Hawk 4 Family Installation Guide, Rev. B 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 4 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 4 Family Installation Guide, Rev. B
DC Power
Connector
4 3 2 1
50 Pin
SCSI I/O
Connector
Pin
1
2
3
4
Power
+12V
+12V RET
+ 5V RET
+ 5V
_____________________________________________________________________________________________________________
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.
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 since that has the highest priority during bus
arbitration). 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 4 Family Installation Guide, Rev. B 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 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
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 4 Family Installation Guide, Rev. B 21
Pin 1
SCSI I/O
Connector
Pin 1
DC Power
Connector
J6
*
J5
J1
J2
_____________________________________________________________________________________________________________
Figure 2. Hawk 4 family model drives I/O
connection (50 pin SCSI I/O connector).
"N" model drive terminators (not shown)
are not removable.
22 Hawk 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
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 4 family N/ND models (50 pin SCSI I/O)
On Model N/ND drives
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,
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
do not use both J5 and J6 for ID
Hawk 4 Family Installation Guide, Rev. B 23
Pin 1 End
Pin 1
SCSI I/O
Connector
Pin 1
J2
See Figure 3b
Drive with HDA up,
PCB down, viewed
from front
Delay Motor Start
Enable Motor Start
Write Protect
Parity Option
Term. Power
from Drive
Term. Power
to SCSI Bus
Term. Power
from SCSI Bus
TEDSMEWPPESSTPT
P
Jumper
Positions
Position A
DC Power
Connector
J2
Drive Front
J6
J5
J1
Pin 1
HDA
J6
Reserved
[2]
[2]
[2]
A2A1A
0
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
R
E
S
L
E
D
R
E
S
CATH
3
4
Reserved
Shipped with cover installed.
Do not remove.
Do not install jumpers
on these four positions.
Enable
Terminators
_____________________________________________________________________________________________________________
Figure 3a. Drive configurator, Hawk 4 family models
Pin 1
HDA
Side View of Drive
J1
SCSI ID = 0
SCSI ID = 1
SCSI ID = 2
SCSI ID = 3
SCSI ID = 4
SCSI ID = 5
SCSI ID = 6
SCSI ID = 7
J5
A0A1A
2
DC Power
Connector
J2
Drive Front
J6
J5
J1
50 pin SCSI connector
24 Hawk 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
SCSI I/O
Connector
Pin 1
Figure 3b. Drive configurator, Hawk 4 family models
Hawk 4 Family Installation Guide, Rev. B 25
_____________________________________________________________________________________________________________
Notes for Figures 3a and 3b:
[1] Notes explaining the functions of the various jump-
ers 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 underlined is factory 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 on those
drives.
26 Hawk 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
J2
Jumper
Position Jumper Function Description
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.
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 com-
mand received from host. Delayed start feature is overridden and does not apply when
ME jumper is installed.
Hawk 4 Family Installation Guide, Rev. B 27
_____________________________________________________________________________________________________________
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 check-
ing 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
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 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 (in-
ternal connection) and to I/O pin 26 of SCSI
bus. This is a legal jumper setting.
28 Hawk 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
J2 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
A0,A1,A2Drive ID on SCSI Bus (J6 may be used
instead). The drive ID is binary coded
positionwise i.e., jumper in position A2 is
drive ID 4, in position A1 is ID 2, position A
is ID 1 and no jumpers is ID 0. Default is
ID = 0.
0
Hawk 4 Family Installation Guide, Rev. B 29
_____________________________________________________________________________________________________________
J6
Jumper Jumper Function Description
Installation
A2,A1,A0Drive ID on SCSI bus. 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.
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 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.
,
30 Hawk 4 Family Installation Guide, Rev. B
_____________________________________________________________________________________________________________
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 4. 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).
Hawk 4 Family Installation Guide, Rev. B 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.
Make sure there are not jumpers on both J5 and J6
drive ID select position. Use J5 or J6
but not both
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 4 Family Installation Guide, Rev. B
A
F
D
E
[1]
[3]
B
G
J
H
K
[2]
Notes:
[4]
[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 6.0 in-lb (.675 NM).
Min. thread engagement 0.12 in.
(3.05 mm).
[2] Mounting holes four on bottom, 6-32
UNC. Max screw length into bottom of
drive 0.20 in. (5.08 mm). Maximum
torque 6.0 in-lb (.675 NM). Min.
thread engagement 0.12 in. (3.05 mm).
[3] Power and interface connectors can
extend past the "A" dimension by
0.040 in. (1.02 mm).
[4] Decorative front panel.
Inches Millimeters
5.74
4.00
1.62
2.362
.620
4.000
.250
1.750
3.750
2.370
1.725
4.000
0.19
0.015
145.80
101.60
41.15
60.00
15.75
101.60
6.35
44.45
95.25
60.20
43.82
101.6
4.83
0.381
A
B
C
D
E
F
G
H
J
K
L
M
N
P
±
±
+
–
±
±
±
+
–
±
±
±
±
±
±
max
0.010
0.010
0.026
0.010
0.010
0.010
0.010
0.010
0.005
0.010
0.010
0.010
0.010
0.010
0.010
±
±
+
–
±
±
±
+
–
±
±
±
±
±
±
max
.25
.25
.66
.25
.25
.25
.25
.25
.12
.25
.25
.25
.25
.25
.25
C
L
[4]
M
N
[4]
P
_____________________________________________________________________________________________________________
Figure 4. Hawk 4 family mounting dimensions (50 pin
SCSI I/O connector)
Hawk 4 Family Installation Guide, Rev. B 33
_____________________________________________________________________________________________________________
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.
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: 77767474, Rev. B
Printed in USA
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