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Dell Precision WorkStation 420 User Manual

Dell Precision WorkStation 420
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DellPrecision™WorkStation420SystemsServiceManual
Desktop Chassis Removing and Replacing Parts
Mini Tower Chassis Removing and Replacing Parts
NOTE: You can obtain the latest version of this document from the Support section of the Dell Web site at http://www.dell.com.
Notes, Notices, and Cautions
Throughout this guide, blocks of text may be accompanied by an icon and printed in bold type or in italic type. These blocks are notes, notices,
and cautions, and they are used as follows:
Information in this document is subject to change without notice.
©1999 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, Dell Precision, and the DELL logo are trademarks of Dell Computer Corporation.
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: 30 Nov 1999
NOTE: A NOTE indicates important information that helps you make better use of your system.
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.

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Dell Precision WorkStation 420 Specifications

General IconGeneral
Form FactorMini-Tower
Network10/100 Ethernet
Power Supply250W
ProcessorIntel Pentium III or Xeon
Processor SpeedUp to 1 GHz
Memory TypeSDRAM
StorageSCSI or IDE
GraphicsNVIDIA Quadro or ATI FireGL
AGPAGP 4x
Operating SystemWindows 2000
Expansion Slots1 AGP
PortsSerial, Parallel, USB
Optical DriveCD-ROM or DVD-ROM
Dimensions17.5 x 8.25 x 17.5 inches
Weight40 lbs

Summary

Dell Precision WorkStation 420 Desktop Chassis Service Manual

Desktop Chassis Overview

General introduction to the desktop chassis procedures and system requirements.

Recommended Tools for Desktop Chassis

List of tools required for performing maintenance on the desktop chassis.

Desktop Chassis Precautionary Measures

Essential safety guidelines and ESD precautions for working on the desktop chassis.

Restarting the Desktop System

Steps to restart the system and reset the chassis intrusion detector after service.

Desktop Computer Cover Removal and Replacement

Detailed procedure for removing and reinstalling the desktop computer cover.

Desktop Interior Service Label

Location and purpose of the interior service label for desktop systems.

Desktop Internal View

Diagram illustrating the internal layout of the desktop chassis.

Desktop Front-Panel Inserts

Procedure for removing and replacing front-panel inserts on the desktop chassis.

Desktop Expansion Cards Overview

Description of expansion slots and card types available in the desktop system.

Desktop Expansion Card Removal

Step-by-step guide for removing expansion cards from the desktop system.

Desktop Expansion-Card Guide

Procedure for removing the expansion card guide from the desktop chassis.

Desktop Control Panel Removal

Steps to remove the front control panel assembly from the desktop chassis.

Desktop Chassis Intrusion Switch

Procedure for removing and replacing the chassis intrusion switch.

Desktop Drives Overview

Overview of the drive bay configurations in the desktop chassis.

Desktop Diskette Drive Removal

Detailed instructions for removing the 3.5-inch diskette drive.

Desktop 5.25-Inch Drive Removal

Procedures for removing optical, tape, or other 5.25-inch drives.

Desktop Hard-Disk Drive Bracket Removal

Steps to remove the mounting bracket for the hard disk drive.

Desktop Hard-Disk Drive Removal

Detailed instructions for removing a hard disk drive from its bracket.

Desktop Hard-Disk Drive Replacement

Guide for installing a new hard disk drive into the desktop chassis.

Desktop Power Supply Overview

Introduction to the power supply unit and its accessibility.

Rotating the Desktop Power Supply

Method to rotate the power supply for easier access to internal components.

Desktop System Board Components

Diagram identifying sockets and connectors on the system board.

Desktop System Board Jumpers

Explanation and settings for system board configuration jumpers.

Desktop System Board Labels

List of system board connector and socket labels with descriptions.

Desktop RIMM Memory Module Procedures

Instructions for removing and installing Rambus in-line memory modules (RIMMs).

Desktop Microprocessor and Heat Sink Assembly

Procedure for replacing the microprocessor and its heat sink assembly.

Desktop Cooling Fan Removal

Steps to remove the system cooling fan from the desktop chassis.

Desktop Battery Removal and Replacement

Guide for removing and installing the system battery.

Desktop System Board Removal and Installation

Detailed steps for removing and reinstalling the system board.

Dell Precision WorkStation 420 Mini Tower Chassis Service Manual

Mini Tower Chassis Overview

General introduction to the mini tower chassis procedures and system requirements.

Recommended Tools for Mini Tower Chassis

List of tools required for performing maintenance on the mini tower chassis.

Mini Tower Chassis Precautionary Measures

Essential safety guidelines and ESD precautions for working on the mini tower chassis.

Restarting the Mini Tower System

Steps to restart the system and reset the chassis intrusion detector after service.

Mini Tower Computer Cover Removal and Replacement

Detailed procedure for removing and reinstalling the mini tower computer cover.

Mini Tower Interior Service Label

Location and purpose of the interior service label for mini tower systems.

Mini Tower Internal View

Diagram illustrating the internal layout of the mini tower chassis.

Mini Tower Front Panel Removal

Procedure to remove the front panel from the mini tower chassis.

Mini Tower Front-Panel Inserts

Procedure for removing and replacing front-panel inserts on the mini tower.

Mini Tower Drives Overview

Overview of the drive bay configurations in the mini tower chassis.

Mini Tower Diskette Drive Removal

Detailed instructions for removing the 3.5-inch diskette drive in mini tower.

Mini Tower 5.25-Inch Drive Removal

Procedures for removing optical, tape, or other 5.25-inch drives in mini tower.

Mini Tower Hard-Disk Drive Removal

Steps to remove a hard disk drive from the mini tower chassis.

Mini Tower Hard-Disk Drive Installation

Guide for installing a hard disk drive into the mini tower chassis.

Mini Tower AGP Card Brace

Procedure for removing the AGP card brace in the mini tower system.

Mini Tower Expansion Cards Overview

Description of expansion slots and card types available in the mini tower system.

Mini Tower Expansion Card Removal

Step-by-step guide for removing expansion cards from the mini tower.

Mini Tower Expansion Card Installation

Guide for installing expansion cards into the mini tower system.

Mini Tower Expansion-Card Guide and Fan

Procedure for removing the expansion card guide and attached fan.

Mini Tower Control Panel Removal

Steps to remove the front control panel assembly from the mini tower chassis.

Mini Tower Chassis Intrusion Switch

Procedure for removing and replacing the chassis intrusion switch in mini tower.

Mini Tower Power Supply Overview

Introduction to the power supply unit and its accessibility in mini tower.

Rotating the Mini Tower Power Supply

Method to rotate the power supply for easier access to internal components in mini tower.

Mini Tower System Board Components

Diagram identifying sockets and connectors on the mini tower system board.

Mini Tower System Board Jumpers

Explanation and settings for system board configuration jumpers in mini tower.

Mini Tower System Board Labels

List of system board connector and socket labels with descriptions for mini tower.

Mini Tower RIMM Memory Module Procedures

Instructions for removing and installing Rambus in-line memory modules (RIMMs).

Mini Tower Microprocessor and Heat Sink Assembly

Procedure for replacing the microprocessor and its heat sink assembly.

Mini Tower Microprocessor Cooling Fan

Steps to remove the microprocessor cooling fan from the mini tower.

Mini Tower Battery Removal and Replacement

Guide for removing and installing the system battery in the mini tower.

Mini Tower System Board Removal and Installation

Detailed steps for removing and reinstalling the system board in the mini tower.

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