Seagate ST373455LC - Cheetah 73.4 GB Hard Drive User manual

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Barracuda 18LP
Disc Drive
ST39175LW/LC
ST318275LW/LC
Installation Guide

Contents
Preface.........................................................................................1
Electrostatic discharge protection................................................1
Important safety information and precautions..............................2
Wichtige Sicherheitshinweise ......................................................4
Regulatory agency compliance....................................................7
Seagate Technology support services.........................................9
General description....................................................................15
Initial setup information..............................................................19
Kühlung des Systems ................................................................30
Installation des Laufwerkes
und Anschlußder Kabel..........................................................32
LW drives section.......................................................................40
LC drives section .......................................................................45
©1997-1999 Seagate Technology, Inc. All rights reserved
Publication Number: 77767527, Rev. B
May 1999
Seagate, Seagate Technology, and the Seagate logo are regis-
tered trademarks of Seagate Technology, Inc. Barracuda,
SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either trade-
marks or registered trademarks of Seagate Technology, Inc. or
one of its subsidiaries. All other trademarks or registered trade-
marks are the property of their respective owners.
No part of this publication may be reproduced in any form without
written permission from Seagate Technology, Inc.

Barracuda 18LP Installation Guide, Rev. B 1
Preface
This manual contains information for users of the Seagate®
Barracuda 18LP SCSI disc drives. It provides support services,
performance specifications, and initial setup information. Addi-
tional information is available in the
Barracuda 18LP Product
Manual
(part number 77767526). Contact your Seagate sales
representative if you need to order this publication.
Note. If any differences exist between specification values in
this guide and the product manual, the product manual
values are the authoritative values.
Electrostatic discharge protection
Caution. Removal of circuit boards by personnel not perform-
ing depot repair will damage components and may
void the warranty.
All drive electronic assemblies are sensitive to static electricity,
due to the electrostatically sensitive devices used within the
drive circuitry. Although some devices such as metal-oxide semi-
conductors are extremely sensitive, all semiconductors, as well
as some resistors and capacitors, may be damaged or degraded
by exposure to static electricity.
Electrostatic damage to electronic devices may be caused by the
direct discharge of a charged conductor or by exposure to the
static fields surrounding charged objects. To avoid damaging
drive electronic assemblies, observe the following precautions
when installing or servicing the drive:
•Ground yourself to the drive whenever the drive electronics
are or will be exposed. Connect yourself to ground with a wrist
strap (Seagate part number 12263496). Connection may be
made to any grounded metal assembly. As a general rule,

2 Barracuda 18LP Installation Guide, Rev. B
remember that you and the drive electronics must all be
grounded to avoid potentially damaging static discharges.
•Turn off the power before removing or installing the DC power
cable.
•Do not remove any circuit boards from the drive.
•Never use an ohmmeter on any circuit boards.
•When installing the drive on a carrier or tray, discharge the car-
rier or tray prior to inserting it into the system.
Important safety information and precautions
Caution. Use forced-air ventilation when bench-testing the
drive to ensure proper cooling of drive components.
Use proper safety techniques for safe, reliable operation of this
unit.
The procedures in this manual and labels on the unit contain
warnings and cautions that must be carefully read and followed
to minimize or eliminate the risk of personal injury. The warnings
point out conditions or practices that may endanger you or oth-
ers. The cautions point out conditions or practices that may dam-
age the unit, possibly making it unsafe for use.
Always observe the following warnings and precautions:
•Follow all cautions and warnings in the procedures.
•Use sound safety practices when operating, installing, or
removing the unit.
•Use caution when troubleshooting a unit that has voltages
present. Turn off power to the unit before removing it.
•Ensure that the internal temperature of the rack or cabinet
does not exceed the limits defined for the drive when the drive
is mounted in an equipment rack or cabinet. When units are

Barracuda 18LP Installation Guide, Rev. B 3
stacked vertically, pay special attention to the top where tem-
peratures are usually highest.
•Follow the precautions listed above in “Electrostatic discharge
protection.”
•Do not remove any circuit boards from the drive. Return the
entire drive for depot repair if any circuit board is defective.
Removal of circuit boards by personnel not performing depot
repair will damage components and may void the warranty.
•Do not remove the head and disc assembly (HDA) from the
drive. Return the entire drive for depot repair if the HDA is
defective.
•Do not attempt to disassemble the HDA. It is not field repair-
able. If the sealed HDA is opened by personnel not performing
depot repair, this will damage components and void the
warranty.
As a component, this drive is designed to be installed and oper-
ated in accordance with UL1950, EN60950, CAN/CSA C22.2
950-95, and VDE0805.
Seagate takes all reasonable steps to ensure that its products
are certifiable to currently accepted standards. Typical applica-
tions of these disc drives include customer packaging and sub-
system design. Safety agencies conditionally certify component
assemblies, such as the Barracuda disc drive, based on their
final acceptability in the end-use product. The subsystem
designers are responsible for meeting these conditions of
acceptability in obtaining safety-regulatory agency compliance in
their end-use products and for certifying where required by law.
A necessary part of meeting safety requirements is the provision
for overcurrent protection on drive SELV supply voltages.