background image

Other applicable option jumper settings

Select other options on J2 as illustrated in Figure 2. Do not change these
unless instructed to do so by the host system documentation.

Note. Host need not be on the end. Another device can be on the end with the termina-

tor, with the host having no terminator. Plug in power cable as shown.

Figure 3.

Cable connections to the drive

Mounting the drive and connecting cables

Do not touch any connector pins or components on the SCSI controller board
(PCB) without observing static-discharge precautions. 
Always handle the drive by the frame only.

The drive may be mounted in any orientation (horizontally or vertically). You
must ensure that the drive receives adequate air flow for cooling. 

1.

Verify that ID and option select jumpers are correctly installed.

2.

Mount “LW” and “LWV” model drives using four 6-32 UNC screws; two in
each side or four in the bottom of the drive.

3.

“LC” and “LCV” model drives slide into grooves and plug into a mounted
80-pin backplane connector. Do not use cables for “LC” and “LCV” mod-
els.

4.

Maximum length for screws to extend into the chassis mounting holes is
0.15 inch (3.81 mm), measured from the outer surface of the chassis.
Tighten screws evenly. Do not over-tighten or force the screws. They may
not be properly aligned or have metric threads. Back the screw out and try
again or get new screws.

5.

Connect the 68-pin SCSI cable into the drive’s SCSI connector. Take care
not to stretch or crimp this cable, and do not block the system’s cooling air
flow with the cable. 

6.

For LVD operation, twisted conductor-pair cables are required.

7.

“LW” and “LWV” model drives receive DC power through a 4-pin connector
mounted next to the 68-pin SCSI connector. The output of a power supply
must meet SELV (safety extra low voltage) as defined in IEC 950. To con-
nect the DC power cable to the drive, insert the connector into the drive’s
4-pin DC power connector. See Figure 1. “LC” and “LCV” models power
goes through its 80-pin I/O connector.

8.

Check all connections between the drive and the host system.

9.

Replace the host system’s cover.

Formatting the drive

The drive has been low level formatted at the factory. Do not low level format
this drive again unless you need to perform certain diagnostics through the
host adapter. If you decide to perform a low level format, do not abort the for-
mat 
as this is likely to make the drive inoperable. Protect against power failure
or other power interruptions during the format. It may take up to one hour per
gigabyte to low level format the drive (18 hours). Do not reboot or otherwise
disrupt the process.

Warning. Formatting a drive erases all user data. Be sure that you understand

this principle before formatting any hard disc drive. It is not neces-
sary to format a drive that previously has been used to store data,
unless your intention is to erase all user data.

Note. Seagate is not responsible for lost user data.

1.

Turn on DC power.

2.

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

3.

Format the disc drive. Barracuda 18XL disc drives are designed to operate
with a variety of operating systems. Please refer to your system or SCSI
controller manual for information about formatting and setting up the drive.
Some quick desktop system notes are provided below.

Quick reference desktop system notes
Note. 
Refer to your system or utility manual for detailed instructions.

• DOS. Set the drive type in CMOS to “Zero,” “None,” or “No hard drive

installed.” Use FDISK.EXE and FORMAT.EXE. Systems that have operating
system Windows 95 release 950B or later do not need to partition the drive
more than one time.

• Macintosh. Use a third-party drive utility (Apple’s HD Setup utility only works

with drives having special Apple firmware).

Troubleshooting problems

1.

Drive does not spin up. Check cables and all jumper settings. Make sure
cable pin 1 (edge stripe) matches PCB pin 1.

2.

Drive spins, but no LED on/off activity. Check SCSI ID setting. Set the
ID so that each device on the SCSI chain has its own unique ID. See also
item 3 below. Host I/O controller is likely ID7.

3.

Computer does not seem to recognize the drive. Verify that the drive is
enabled in the system CMOS or setup program. If not, select the Autode-
tect option and enable it.

4.

FDISK does not detect the drive. Run the FDISK program located on
your Windows startup diskette. Type fdisk/status to verify that your hard
drive is present.

Seagate support services

For online information about Seagate products, visit www.seagate.com or e-
mail your disc questions to [email protected]

If you need help installing your drive, consult your dealer first. If you need addi-
tional help, call a Seagate technical support specialist. Before calling, note
your system configuration and drive model number (ST318426LW/LC).

Africa

+31-20-316-7222

Poland

00 800-311 12 38

Australia

+61-2-9725-3366

Spain

900-98 31 24

Austria

0 800-20 12 90

Sweden

0 207 90 073

Belgium

0 800-74 876

Switzerland

0 800-83 84 11

Denmark

80 88 12 66

Singapore

+65-488-7584

France

0 800-90 90 52

Taiwan

+886-2-2514-2237

Germany

0 800-182 6831

Turkey

00 800-31 92 91 40

Hong Kong

+852-2368 9918

United Kingdom 0 800-783 5177

Ireland

1 800-55 21 22

USA/Canada/

1-800 SEAGATE or

Italy

800-790695

Latin America

+1-405-936-1234

Middle East

+31-20-316-7222

Other European

Netherlands 0 800-732-4283

countries

+31-20-316-7222

Norway

800-113 91

Warranty. Contact your place of purchase or our web site (above). 
Return Merchandise Authorization (RMA).

Before returning the drive, verify that it is

defective. Seagate Worldwide customer service centers are the only facilities authorized
to service Seagate drives. Contact nearest center for return procedures and trade regula-
tions.

Shipping the drive
Caution.

Back up the data before shipping. Seagate assumes no responsibility for data

lost during shipping or drive repair. Shipping drive in an unapproved container voids the
warranty. Pack the drive with original box and packing materials. Use no other materials.
This prevents electrical and physical damage in transit.

© 1999 Seagate Technology, Inc. All rights reserved

Publication number: 

75789511

, Rev. A, October 1999, Printed in U.S.A.

Seagate, Seagate Technology, the Seagate Logo, and Barracuda are either registered
trademarks or trademarks of Seagate Technology, Inc. All other trademarks are the prop-
erty of their respective owners.

Host Adapter

PCB

Cable Pin 1
(check your

adapter for Pin 1 location)

SCSI ID 1

SCSI ID 0

SCSI ID 7

2 through X

SCSI devices

Terminator

“LW” Model

Drive

Power

Cable

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