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Dell™PowerEdge™2500SystemsInstallationandTroubleshootingGuide

Introduction

Indicators, Messages, and Codes

Finding Software Solutions

RunningtheDell™Diagnostics

Troubleshooting Your System

Installing System Board Options

Installing Drives

Getting Help

Jumpers and Connectors

Abbreviations and Acronyms

Figures

Tables

Notes, Notices, Cautions, and Warnings

Information in this document is subject to change without notice.

©2000DellComputerCorporation.Allrightsreserved.

Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.

Trademarks used in this text: Dell, the DELL logo, PowerEdge, Dell OpenManage, and DellWare are trademarks of Dell Computer Corporation; Intel is a registered trademark of Intel Corporation; Microsoft, MS-DOS, Windows NT, and Windows

are registered trademarks of Microsoft Corporation; Novell and NetWare are registered trademarks of Novell, Inc.

Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its

own.

Initial release: January 2001

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NOTE: A NOTE indicates important information that helps you make better use of your computer.

NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.

CAUTION: A CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

WARNING: A WARNING indicates a potentially hazardous situation which, if not avoided, may result in severe injury.

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Jumpers and Connectors

Dell™PowerEdge™2500SystemsInstallationandTroubleshootingGuide

Jumpers—AGeneralExplanation

System Board Jumpers

System Board Connectors

SCSI Backplane Board Connectors

Interposer Board Connectors

Disabling a Forgotten Password

This section provides specific information about the jumpers on the system board. It also provides some basic information on jumpers and switches and describes the

connectors and sockets on the various boards in the computer.

Jumpers—AGeneralExplanation

Jumpers provide a convenient and reversible way of reconfiguring the circuitry on a printed circuit board. When reconfiguring the system, you may need to change

jumper settings on the system board. You may also need to change jumper settings on expansion cards or drives.

Jumpers

Jumpers are small blocks on a circuit board with two or more pins emerging from them. Plastic plugs containing a wire fit down over the pins. The wire connects the

pins and creates a circuit. To change a jumper setting, pull the plug off its pin(s) and carefully fit it down onto the pin(s) indicated. FigureA-1 shows an example of a

jumper.

Figure A- 1. Example Jumpers

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A jumper is referred to as open or unjumpered when the plug is pushed down over only one pin or if there is no plug at all. When the plug is pushed down over two

pins, the jumper is referred to as jumpered. The jumper setting is often shown in text as two numbers, such as 1-2. The number 1 is printed on the circuit board so that

you can identify each pin number based on the location of pin 1.

FigureA-2 shows the location and default settings of the jumper blocks on the system board. See TableA-1 for the designations, default settings, and functions of the

system's jumpers.

System Board Jumpers