Seagate ST31200N/ND/NC User manual

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HAWK 1LP Family:
ST31200N/ND/NC
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ST3620N/ND/NC
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Installation Guide
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Contents
Introduction........................................................... 1
Electromagneticinterference ................................ 1
Before you begin .................................................. 3
Installation overview ............................................. 8
Product Repair...................................................... 10
Shipping ......................................................... 11
Product Repair and return information ........... 11
Technical support services................................... 12
Hawk 1LP family product information ................... 15
Initial set-up information........................................ 17
Drive configuration................................................ 22
Drive installation ................................................... 32
© 1994 Seagate Technology, Inc. All rights reserved
Publication Number: 77767453, Revision D
March 1994
Seagate®,SeagateTechnology®andtheSeagatelogo
areregisteredtrademarksofSeagateTechnology,Inc.
HawkTM, SeaFAXTM, SeaFONETM, SeaTDDTM, and
SeaBOARDTM, are trademarks of Seagate Technol-
ogy, Inc. Other product names are registered trade-
marks 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 1LP Family Installation Guide, Rev. D 1
Introduction
This manual is organized to assist you in the installa-
tion and operation of your Seagate Hawk 1LP Family
discdrive.FamilymodelsarelistedinHawk1LPFamily
Product Information section. It also provides informa-
tion to aid in obtaining service for the drive.
Beforeattemptinganyinstallation,pleasereadthrough
all applicable sections of this document, including all
warnings and cautions.
Warning.
This equipment generates,uses,andcanradiateradio
frequency energy and if not installed and used in
accordance with these instructions, may cause inter-
ference to radio communications.
Electromagnetic interference (EMI)
considerations
The drive(s) described herein, as delivered, are de-
signed 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
arenotsubjecttoSubpartJofPart15oftheFCCRules

2 Hawk 1LP Family Installation Guide, Rev. D
and Regulations nor the Radio Interference Regula-
tionsoftheCanadianDepartmentofCommunications.
However,theunithasbeentestedusingpropershield-
ing and grounding and found to be compliant with the
ClassAlimitsoftheFCCRulesandtheRegulationsof
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 reason-
able shielding. As such, the drive(s) are capable of
meeting the Class B limits of the FCC Rules and the
RegulationsoftheCanadianDepartmentofCommuni-
cations.
Note. Itistheendusers'responsibilitytoassurethat
the drive(s)describedhereinmeettheappro-
priate EMI requirements of their system.
Shielded I/O cables may be required if the
enclosure does not provide adequate shield-
ing.IfI/Ocablesare externaltotheenclosure,
shieldedcablesshouldbeused,withtheshields
grounded to the enclosure and to the host
controller.

Hawk1LPFamilyInstallationGuide,Rev.D 3
Before you begin
Verify that the system is switched off and discon-
nected from main power before any installation is
attempted.
Protect yourself, the drive, and your valuable pro-
grams and data by reading the following cautions
and warnings.
•Donottamper withsealed topcover.Doingsovoids
your warranty. The drive contains no user service-
able components. See Product Repair section for
more information.
•Visually inspect the shipping container for any obvi-
ous damage.
•Verifyallpartslistedonshippingbillarereceivedwith
theequipment.Discrepanciesordamage should be
reported to the shipping company.
•Inspectdriveforpossibleshippingdamage.Allclaims
of this type should be filed promptly with the trans-
porterinvolved.Saveoriginalpackingmaterialstobe
used when reshipping.

4 Hawk 1LP Family Installation Guide, Rev. D
•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.
•Donotunpack drivefrom itsstaticshieldedbaguntil
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
containedinthisequipmentcanbedegraded
or destroyed by Electrostatic Overstress
(EOS) or by Electrostatic Discharge (ESD).

Hawk 1LP Family Installation Guide, Rev. D 5
Static electrical charges can accumulate
quicklyonpersonnel,clothingandsynthetic
materials. The electrostatic fields due to
these charges when brought in close prox-
imity to susceptible circuit assemblies and
components,canresultindegradedreliabil-
ity or immediate failure of the affected com-
ponent or assembly.
To insure optimum reliable equipment op-
eration, it is required that technical support
personneldischargethemselvesbywearing
a grounding strap around the wrist and be
connected to a grounding terminal while
workinginthe vicinityof,andwhilehandling
EOS/ESD susceptible assemblies/parts. If
unavailable, ground yourself frequently by
touching the metal chassis of the system
beforehandlinganycomponents(thishelps
onlyifthesystemisconnectedtoaground).
Avoid static-inducing carpeted areas. This
procedureisespeciallyimportantwhenhan-
dling printed circuit boards (PCB's).

6 Hawk 1LP Family Installation Guide, Rev. D
Safety instructions
1. The disc drive(s) are to be installed in a customer
suppliedenclosurewherethesurroundingairdoes
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 8.0 lb-in (.90 NM) max with
minimumthreadengagementof0.12in(3.00mm).
3. ThepowerrequirementsareshownintheProduct
Informationsection.
4. The power supply must satisfy the safety require-
ments for SELV (Safety Extra Low Voltage) cir-
cuits.
5. Service is to be provided by trained Seagate ser-
vice 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,DINVDE0805/05.90andEN60950:
1988 (IEC 950). Note
Powermust be offwhen connectingordisconnecting.

Hawk 1LP Family Installation Guide, Rev. D 7
Sicherheitsanleitung
1. DäsGerätisteinEinbaugerät,vorgesehenfüreine
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 oberen 0.15 in (3.81 mm). Maximalle
Schraubenanziehung von 8.0 in-lb (.90 NM) mit
minimalem Gewindeansperuch .12 in (3.00 mm).
3. DieVersorgungsspannungenwerdeninderSektion
Produkt Information gezeigt.
4. Die Versorgungsspannung muss SELV entspre-
chen.
5. AlleArbeitendürfennurvonausgebildetemSeagate
Service-Personal durchgefürhrt werden.
6. Der Einbau des Drives muss den Anforderungen
gemässDINVDE0805/05.90oderEN60950:1988
(IEC 950). Vorsicht
ÁnsehlussoderEntfernungolerGeräteverbindungnur
beiabgeschalteterVersorgungsspannungvornehmen.

8 Hawk 1LP Family Installation Guide, Rev. D
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 indi-
vidualdriveinstallationsectionsforspecificinformation
on your drive model.
•Drive configuration: Select those drive features
thatareappropriatetoinstallthedriveinthesystem.
Thisisdonebyinstallingorremovinguserconfigura-
tion jumpers found on the drive PCB.
•Mechanical installation: After setting up the drive
configuration the drive must be mechanically in-
stalledinto the host system and the power and I/O
cables attached. Previously mentioned precautions
should be observed.
•CMOS configuration: SCSI drives should not be
definedintheCMOS.TheSCSIhostadapterusesits
own BIOS to handle the Input/Output procedures.
TheCMOS settingfor SCSI driveis eitherdrivetype
zero, or the no drive installed option.

Hawk 1LP Family Installation Guide, Rev. D 9
•Low-Level formatting: All Hawk 1LP family drive
modelsare low-level formattedatthe factory anddo
notrequirethisstepduringinstallation.Ifaninstalled
drive is low-level formatted, all user data will be lost.
Note: SeagateTechnologyassumesnoliabilityforlost
user data.
•Partitioningandhighlevelformatting:A drivecan
be sub-divided into "partitions" which behave as
individual drives within the system. Consult the sys-
tem documentation for instructions on partitioning
and high level formatting. Information is also avail-
able in bookstores and libraries.

10 Hawk 1LP Family Installation Guide, Rev. D
Product repair information
Service requirements
The special facilities required for the manufacture of
these drives generally prohibit repair in the field. If
problemsoccurduringinstallation,pleasecontactyour
supplierforassistance.Donotattempttodisassemble
or repair. Drives should be sent to the repair depot
through the purchase source, if possible. Please ob-
serve the following cautions.
Caution.
•Handle drive with care. Do not drop, or bump hard.
•Never remove the cover of these disc drives. Serv-
icingitems in the sealed HDA(heads,media, actua-
tor,etc.)require specialfacilities. Thedrivecontains
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 1LP Family Installation Guide, Rev. D 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
Seagateapprovedcontainermustbeused. Keepyour
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 compo-
nents improperly packaged or obviously damaged in
transit.ContactyourAuthorizedSeagateDistributorto
purchaseadditionalboxes.Seagaterecommendsship-
ping by an air-ride carrier experienced in handling
computerequipment.
Product repair and return information
Seagatecustomerservicecentersaretheonlyfacilities
authorized to service Seagate drives. Seagate does
notsanction any third-partyrepairfacilities. Any unau-
thorizedrepairortamperingwiththefactory-sealvoids
the warranty.

12 Hawk 1LP Family Installation Guide, Rev. D
Warranty: Contactyour Seagate Authorized Distribu-
tor, Dealer or other purchase source for warranty
information.
If the drive is no longer under warranty contact pur-
chasesourceforrepairinformationorrefertonumbers
listed in section Technical Support Services.
Technical support services
SeagateTechnologyprovidestechnicalsupportlitera-
ture and diagnostic utilities to Authorized Distributors.
Please contact your dealer for technical support and
installation troubleshooting. Product Technical Sup-
port is available for all Seagate products by calling the
SeaFAX, SeaFONE, SeaTDD or SeaBOARD ser-
vices. 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
technicalsupportinformationbyreturnFAX.Thisserv-
ice is available 24 hours a day, 7 days a week.

Hawk 1LP Family Installation Guide, Rev. D 13
SeaFONE telephone number: 408/438-8222
The enhanced phone system provides recorded tech-
nical information on selected Seagate products while
you are on hold. Technical support specialists are
availabletoanswerquestionsfrom8:00AMto5:00PM
PST, Monday through Friday. Recordings are acces-
sible 24 hours a day, 7 days a week.
SeaTDD telephone number: 408/438-5382
TDD is a Telecommunication Device for the Deaf
wheretwo people can communicateusinga keyboard
that is connected to the phone line. A TDD device is
requiredtoaccessthisservice.Thisserviceisavailable
from8:00AMto5:00PMPST,MondaythroughFriday.
SeaBOARD service:
TheSeagateTechnicalSupportBulletinBoardSystem
(BBS) is available 24 hours a day, 7 days a week. A
modemisrequiredtoaccessthisservice.Thecommu-
nications software must be set for eight data bits, no
parity and one stop bit (8N1).

14 Hawk 1LP Family Installation Guide, Rev. D
With this service you can access:
•Specifications and jumper configurations for all
Seagate products.
•Reprints of Seagate documentation.
•Adirectoryofinformationandhelpfulutilitiesthatyou
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 1LP Family Installation Guide, Rev. D 15
Hawk 1LP 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 megabytes
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
ST31200N 1258.8 1063.5 2700 9 .73 .57
ST31200ND 1258.8 1063.5 2700 9 .70 .57
ST31200NC 1258.8 1063.5 2700 9 .73 .57
ST3620N 651.8 551.4 2700 5 .73 .57
ST3620ND 651.8 551.4 2700 5 .70 .57
ST3620NC 651.8 551.4 2700 5 .73 .57

16 Hawk 1LP Family Installation Guide, Rev. D
Notes.
[1] Standardunitsarefactory formattedwith512data
bytes per sector with one spare sector per track
and2cylinders atinner tracksreserved forspares
in addition to capacity listed.
[2] Measured with an average reading DC ammeter.
Instantaneous +12 V current peaks will exceed
these values.

Hawk 1LP Family Installation Guide, Rev. D 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
resistor packs ("N" and some "NC" models). These
procedures are described in paragraphs following.
NotewhetherdrivemodelnumberendsinN,NDorNC.
SCSI interface cable connection
Models Hawk 1LP family are SCSI interface drives.
System connection is via a 50 pin SCSI connector.
System connection for "NC" models is via an 80 pin
SCSI and DC power connector. Normally the "NC"
model plugs directly into a PCB or bulkhead mounted
mating 80 pin connector. Pin 1 is noted in Figure 2.
Some cables have a contrasting color stripe on one
edge to indicate pin 1. On the "NC" models the I/O
connectoris keyed byvirtueof its shape.Thereis only
one way it can mate with the mating input connector.
Strain relief is recommended at the cable in drives
using cables. Do not block system cooling air flow in
routing of cables.

18 Hawk 1LP Family Installation Guide, Rev. D
DC Power connection
"N" and "ND" model family drives receive DC power
througha4pinconnectormountedonthePCBnextto
the SCSI I/O connector. See figure below.
Figure 1. DC power connection, 50 pin SCSI I/O
connector
"NC" model drives receive power from the host com-
puterthroughthe80pincombinedSCSII/Oandpower
connector. No separate DC power connector is pro-
vided on the drive.
SCSI address selection
On"N"and"ND"modeldrives ,makesurethattheSCSI
bus address jumper(s) are properly set for the bus
address assigned to the drive. See figures 3a and 3b
showingthebusaddressselectheaderandthejumper
configurations that select addresses 0 through 7.
TypicallytheprimarybootdeviceissettoID0,and the
subsequent SCSI drives are jumpered in ascending
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