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Dell OptiPlex 990 Desktop Service Manual

Dell OptiPlex 990 Desktop
103 pages
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Dell OptiPlex 990 Desktop Service Manual
Regulatory Model: D05D
Regulatory Type: D05D001

Table of Contents

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Dell OptiPlex 990 Desktop Specifications

General IconGeneral
BrandDell
ModelOptiPlex 990 Desktop
CategoryDesktop
LanguageEnglish

Summary

Working on Your Computer

Before Working Inside Your Computer

Safety guidelines before performing computer maintenance.

Recommended Tools

Lists tools required for procedures in the manual.

Turning Off Your Computer

Steps to safely power down the computer before maintenance.

After Working Inside Your Computer

Steps to follow after completing computer maintenance.

Cover

Removing the Cover

Procedure to remove the computer chassis cover.

Installing The Cover

Procedure to install the computer chassis cover.

Front Bezel

Removing the Front Bezel

Steps to remove the front bezel from the computer.

Installing The Front Bezel

Steps to install the front bezel onto the computer.

Cards

Removing the Expansion Card

Procedure for removing various types of expansion cards.

Installing The Expansion Card

Procedure for installing various types of expansion cards.

Optical Drive

Removing the Optical Drive

Steps to remove the optical drive from the computer.

Installing The Optical Drive

Steps to install the optical drive into the computer.

Hard Drive

Removing the Hard Drive

Procedure for removing the hard drive from the computer.

Installing The Hard Drive

Procedure for installing a hard drive into the computer.

Memory

Removing the Memory

Steps to remove memory modules from the system board.

Installing The Memory

Steps to install memory modules onto the system board.

Chassis Intrusion Switch

Removing the Chassis Intrusion Switch

Procedure to remove the chassis intrusion switch.

Installing The Chassis Intrusion Switch

Procedure to install the chassis intrusion switch.

Speaker

Removing The Speaker

Steps to remove the internal speaker.

Installing The Speaker

Steps to install the internal speaker.

Heat Sink

Removing The Heat Sink and Processor

Procedure to remove the heat sink and processor assembly.

Installing The Heat Sink and Processor

Procedure to install the heat sink and processor assembly.

Coin-Cell Battery

Removing The Coin-Cell Battery

Steps to remove the coin-cell battery.

Installing The Coin-Cell Battery

Steps to install the coin-cell battery.

Power-Switch Cable

Removing The Power-Switch Cable

Procedure to disconnect and remove the power-switch cable.

Installing The Power-Switch Cable

Procedure to connect and install the power-switch cable.

Front Thermal Sensor

Removing The Front Thermal Sensor

Steps to remove the front thermal sensor.

Installing The Front Thermal Sensor

Steps to install the front thermal sensor.

Chassis Fan

Removing The System Fan

Procedure to remove the chassis cooling fan.

Installing The System Fan

Procedure to install the chassis cooling fan.

Input/Output Panel

Removing The Input/Output Panel

Steps to remove the front I/O panel.

Installing The Input/Output Panel

Steps to install the front I/O panel.

Power Supply

Removing The Power Supply

Procedure to remove the power supply unit.

Installing The Power Supply

Procedure to install the power supply unit.

System Board

Removing The System Board

Procedure to remove the system board.

Installing The System Board

Procedure to install the system board.

Power Supply Unit (PSU) Thermal Sensor

Removing The PSU Thermal Sensor

Steps to remove the PSU thermal sensor.

Installing The PSU Thermal Sensor

Steps to install the PSU thermal sensor.

System Setup

System Setup

Overview of entering and navigating system setup.

Boot Menu

Accessing the boot menu for device selection.

Boot Menu Enhancements

Details on boot menu improvements.

Troubleshooting

Diagnostic LEDs

Explains diagnostic LEDs and their behavior.

Diagnostic Light Patterns

Describes LED patterns and corresponding problems.

Beep Codes

Lists beep codes and their associated causes.

Error Messages

Lists common error messages and their descriptions.

Specifications

Technical Specifications

Provides detailed technical specifications of the system.

Contacting Dell

Contacting Dell

Information on how to contact Dell for support.

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