Dell OptiPlex 990 Desktop Manuale utente

Dell OptiPlex 990 Ultra Small Form Factor

Service Manual

Regulatory Model D01U

Regulatory Type D01U001

Notes, Cautions, and Warnings

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

computer.

CAUTION: A CAUTION indicates potential damage to hardware or loss of data if

instructions are not followed.

WARNING: A WARNING indicates a potential for property damage, personal injury, or

death.

Information in this publication is subject to change without notice.

Reproduction of these materials in any manner whatsoever without the written permission of Dell Inc. is

strictly forbidden.

Trademarks used in this text: Dell™, the DELL logo, Dell Precision™, Precision ON™,ExpressCharge™,

Latitude™, Latitude ON™, OptiPlex™, Vostro™, and Wi-Fi Catcher™are trademarks of Dell Inc. Intel®,

Pentium®, Xeon®, Core™, Atom™, Centrino®, and Celeron®are registered trademarks or trademarks of Intel

Corporation in the U.S. and other countries. AMD®is a registered trademark and AMD Opteron™,

AMD Phenom™, AMD Sempron™, AMD Athlon™, ATI Radeon™, and ATI FirePro™are trademarks of

Advanced Micro Devices, Inc. Microsoft®, Windows®, MS-DOS®, Windows Vista®, the Windows Vista start

button, and Office Outlook®are either trademarks or registered trademarks of Microsoft Corporation in the

United States and/or other countries. Blu-ray Disc™is a trademark owned by the Blu-ray Disc Association

(BDA) and licensed for use on discs and players. The Bluetooth®word mark is a registered trademark and

owned by the Bluetooth®SIG, Inc. and any use of such mark by Dell Inc. is under license. Wi-Fi®is a

registered trademark of Wireless Ethernet Compatibility Alliance, Inc.

Other trademarks and trade names may be used in this publication to refer to either the entities claiming the

marks and names or their products, Dell Inc. disclaims any proprietary interest in trademarks and trade

names other than its own.

2011 — 06

Rev. A00

Contents

Notes, Cautions, and Warnings..................................................................2

1 Working on Your Computer......................................................................7

Before Working Inside Your Computer.............................................................................7

Recommended Tools.........................................................................................................8

Turning Off Your Computer................................................................................................8

After Working Inside Your Computer................................................................................9

2 Cover..........................................................................................................11

Removing the Cover........................................................................................................11

Installing The Cover.........................................................................................................12

3 Front Bezel.................................................................................................13

Removing the Front Bezel................................................................................................13

Installing The Front Bezel................................................................................................14

4 Optical Drive..............................................................................................15

Removing the Optical Drive.............................................................................................15

Installing The Optical Drive.............................................................................................16

5 Hard Drive..................................................................................................17

Removing the Hard Drive................................................................................................17

Installing the Hard Drive..................................................................................................18

6 Memory......................................................................................................19

Removing the Memory....................................................................................................19

Installing The Memory.....................................................................................................20

7 Chassis Intrusion Switch........................................................................21

Removing the Chassis Intrusion Switch..........................................................................21

Installing The Chassis Intrusion Switch..........................................................................22

8 Speaker......................................................................................................23

Removing the Internal Speaker.......................................................................................23

Installing The Internal Speaker.......................................................................................24

9 Heat Sink....................................................................................................25

Removing the Heat Sink..................................................................................................25

Installing The Heat Sink..................................................................................................27

10 Processor................................................................................................29

Removing the Processor.................................................................................................29

Installing The Processor.................................................................................................30

11 Coin-Cell Battery....................................................................................31

Removing the Coin-Cell Battery......................................................................................31

Installing The Coin-Cell Battery.......................................................................................32

12 Chassis Fan.............................................................................................33

Removing the System Fan...............................................................................................33

Installing The System Fan...............................................................................................34

13 Input/Output Panel.................................................................................35

Removing the Input/Output Board...................................................................................35

Installing the Input/Output Board....................................................................................36

14 Power Supply..........................................................................................37

Removing the Power Supply...........................................................................................37

Installing The Power Supply...........................................................................................38

15 System Board..........................................................................................39

Removing the System Board...........................................................................................39

Installing The System Board...........................................................................................42

16 Drive Cage...............................................................................................43

Removing the Drive Cage................................................................................................43

Installing The Drive Cage................................................................................................44

17 Wireless Module....................................................................................45

Removing the Wireless Module......................................................................................45

Installing The Wireless Module......................................................................................46

18 Control Panel...........................................................................................47

Removing the Control Panel............................................................................................47

Installing The Control Panel............................................................................................48

19 Internal Antenna.....................................................................................49

Removing the Internal Antenna.......................................................................................49

Installing The Internal Antenna.......................................................................................50

20 System Setup..........................................................................................51

System Setup..................................................................................................................51

Boot Menu.......................................................................................................................51

Boot Menu Enhancements..............................................................................................51

Timing Key Sequences....................................................................................................52

Beep Codes and Text Error Messages............................................................................53

Navigation.......................................................................................................................53

System Setup Options.....................................................................................................53

21 Troubleshooting......................................................................................65

Diagnostic LEDs..............................................................................................................65

Beep Codes.....................................................................................................................72

Error Messages...............................................................................................................75

22 Specifications.........................................................................................83

Technical Specifications.................................................................................................83

23 Contacting Dell.......................................................................................93

Contacting Dell ...............................................................................................................93

Working on Your Computer 1

Before Working Inside Your Computer

Use the following safety guidelines to help protect your computer from potential

damage and to help to ensure your personal safety. Unless otherwise noted,

each procedure included in this document assumes that the following

conditions exist:

• You have read the safety information that shipped with your computer.

• A component can be replaced or--if purchased separately--installed by

performing the removal procedure in reverse order.

WARNING: Before working inside your computer, read the safety information that

shipped with your computer. For additional safety best practices information, see

the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.

CAUTION: Many repairs may only be done by a certified service technician. You

should only perform troubleshooting and simple repairs as authorized in your

product documentation, or as directed by the online or telephone service and

support team. Damage due to servicing that is not authorized by Dell is not covered

by your warranty. Read and follow the safety instructions that came with the

product.

CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist

grounding strap or by periodically touching an unpainted metal surface, such as a

connector on the back of the computer.

CAUTION: Handle components and cards with care. Do not touch the components

or contacts on a card. Hold a card by its edges or by its metal mounting bracket.

Hold a component such as a processor by its edges, not by its pins.

CAUTION: When you disconnect a cable, pull on its connector or on its pull-tab, not

on the cable itself. Some cables have connectors with locking tabs; if you are

disconnecting this type of cable, press in on the locking tabs before you disconnect

the cable. As you pull connectors apart, keep them evenly aligned to avoid bending

any connector pins. Also, before you connect a cable, ensure that both connectors

are correctly oriented and aligned.

NOTE: The color of your computer and certain components may appear differently

than shown in this document.

To avoid damaging your computer, perform the following steps before you begin

working inside the computer.

1. Ensure that your work surface is flat and clean to prevent the computer

cover from being scratched.

2. Turn off your computer (see Turning Off Your Computer).

CAUTION: To disconnect a network cable, first unplug the cable from your

computer and then unplug the cable from the network device.

3. Disconnect all network cables from the computer.

4. Disconnect your computer and all attached devices from their electrical

outlets.

5. Press and hold the power button while the computer is unplugged to

ground the system board.

6. Remove the cover.

CAUTION: Before touching anything inside your computer, ground yourself by

touching an unpainted metal surface, such as the metal at the back of the

computer. While you work, periodically touch an unpainted metal surface to

dissipate static electricity, which could harm internal components.

Recommended Tools

The procedures in this document may require the following tools:

• Small flat-blade screwdriver

• Phillips screwdriver

• Small plastic scribe

• Flash BIOS update program media

Turning Off Your Computer

CAUTION: To avoid losing data, save and close all open files and exit all open

programs before you turn off your computer.

1. Shut down the operating system:

• In Windows 7:

Click Start , then click Shut Down.

• In Windows Vista:

Click Start , then click the arrow in the lower-right corner of the Start

menu as shown below, and then click Shut Down.

• In Windows XP:

Click Start → Turn Off Computer → Turn Off . The computer turns off

after the operating system shutdown process is complete.

2. Ensure that the computer and all attached devices are turned off. If your

computer and attached devices did not automatically turn off when you

shut down your operating system, press and hold the power button for

about 6 seconds to turn them off.

After Working Inside Your Computer

After you complete any replacement procedure, ensure you connect any

external devices, cards, and cables before turning on your computer.

1. Replace the cover.

CAUTION: To connect a network cable, first plug the cable into the network device

and then plug it into the computer.

2. Connect any telephone or network cables to your computer.

3. Connect your computer and all attached devices to their electrical outlets.

4. Turn on your computer.

5. Verify that the computer works correctly by running the Dell Diagnostics.

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