Dell OptiPlex 990 (Early 2011) User Manual

Dell OptiPlex 990 Ultra Small Form FactorService ManualRegulatory Model D01URegulatory Type D01U001

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Cover 2Removing the Cover1. Follow the procedures in Before Working Inside Your Computer.2. Loosen the thumb screw that secures the computer cover.3.

Installing The Cover1. Place the computer cover on the chassis.2. Slide the computer cover towards the front of the chassis, until it clicks intoplace

Front Bezel 3Removing the Front Bezel1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Pry the front bezel retent

Installing The Front Bezel1. Insert the hooks along the bottom edge of the front bezel into the slots onthe chassis front.2. Rotate the bezel toward t

Optical Drive 4Removing the Optical Drive1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel

Installing The Optical Drive1. Fix the optical drive bracket to the optical drive.2. Secure the optical drive into its cage.3. Install the drive cage.

Hard Drive 5Removing the Hard Drive1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel.4. Re

Installing the Hard Drive1. Slide the hard drive back into the drive cage.2. Tighten the screws to secure the hard drive to the drive cage.3. Install

Memory 6Removing the Memory1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel.4. Remove the

Notes, Cautions, and WarningsNOTE: A NOTE indicates important information that helps you make better use of yourcomputer.CAUTION: A CAUTION indicates

Installing The Memory1. Insert the memory module into the connector on the system board.2. Press down on the memory module until the release tabs spri

Chassis Intrusion Switch 7Removing the Chassis Intrusion Switch1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3.

Installing The Chassis Intrusion Switch1. Insert the intrusion switch into the bracket on the power supply and slide itover to secure it.2. Connect th

Speaker 8Removing the Internal Speaker1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel.4.

8. Remove the speaker from the chassis.Installing The Internal Speaker1. Place the speaker on the appropriate location of the chassis rear androtate u

Heat Sink 9Removing the Heat Sink1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel.4. Remo

8. Loosen the captive screws to secure the heat sink/fan assembly to thesystem board.9. Lift the heat sink/fan assembly upward, and remove it from the

Installing The Heat Sink1. Place the heat sink/fan assembly into the chassis.2. Tighten the captive screws to secure the heat sink/fan assembly to the

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Processor 10Removing the Processor1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel.4. Rem

ContentsNotes, Cautions, and Warnings...21 Working on Your Computer...

Installing The Processor1. Insert the processor into the processor socket. Ensure the processor isproperly seated.2. Lower the processor cover.3. Pres

Coin-Cell Battery 11Removing the Coin-Cell Battery1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the fr

Installing The Coin-Cell Battery1. Place the coin-cell battery into the slot on the system board.2. Press the coin-cell battery downward until the rel

Chassis Fan 12Removing the System Fan1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel.4.

8. Lift and remove the system fan out of the chassis.Installing The System Fan1. Place the system fan in the chassis.2. Tighten the screws to secure t

Input/Output Panel 13Removing the Input/Output Board1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the

9. Remove the Input/Output bracket.Installing the Input/Output Board1. Align the Input/Output board with the Input/Output bracket and tighten thescrew

Power Supply 14Removing the Power Supply1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel.

10. Slide the power supply inward and remove the power supply.Installing The Power Supply1. Place the power supply in the chassis and slide it outward

System Board 15Removing the System Board1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel.

Installing The Chassis Intrusion Switch...228 Speaker...

13. Remove the screws that secure the system board to the chassis.14. Remove the 7–mm hex screw from the system board.15. Slide the system board towar

16. Remove the system board from the chassis.41

Installing The System Board1. Align the system board to the port connectors on the rear of the chassis,and place the system board in the chassis.2. Ti

Drive Cage 16Removing the Drive Cage1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front bezel.4. L

7. Remove the drive cage from the system.Installing The Drive Cage1. Place the drive cage on the edge of the computer to allow access to thecable conn

Wireless Module 17Removing the Wireless Module1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front

Installing The Wireless Module1. Slide the wireless local access network (WLAN) card into its slot.2. Press the WLAN card downward until it is locked

Control Panel 18Removing the Control Panel1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the front beze

9. Remove the control panel board.Installing The Control Panel1. Insert the control panel board into the slot on the chassis front.2. Tighten the scre

Internal Antenna 19Removing the Internal Antenna1. Follow the procedures in Before Working Inside Your Computer.2. Remove the cover.3. Remove the fron

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

8. Remove the internal antenna.Installing The Internal Antenna1. Insert the internal antenna into the port in the chassis and slide toward theright to

System Setup 20System SetupThis computer offers you the following options:• Access System Setup by pressing <F2>• Bring up a one-time boot menu

When you enter the <F12> or <Ctrl><Alt><F8> keystroke correctly, the computerbeeps. The key sequence invokes the Boot Device M

Beep Codes and Text Error MessagesThe OptiPlex BIOS is capable of displaying error messages in plain English,along with beep codes. If the BIOS determ

GeneralMemory Technology, DIMM 1 Size, DIMM 2 Size, DIMM 3Size, and DIMM 4 Size.• Processor Information: Displays Processor Type, CoreCount, Processor

System ConfigurationSerial Port Allows you to define the serial port settings. You can set theserial port to:• Disabled• Auto• COM1• COM2• COM3• COM4N

System ConfigurationIf USB port is disabled, the OS cannot see any device attachedto this port.• Enable USB Controller• Disable USB Mass Storage Dev•

Security• System Password MaxPassword Bypass Allows you to bypass the System (Boot) Password and theinternal HDD password prompts during a system rest

SecurityChassis Intrusion Allows you to enable or disable the chassis intrusion feature.You can set this option to:• Clear Intrusion Warning — Enabled

PerformanceIntel® TurboBoost™ Allows you to enable or disable Inel TurboBoost mode of theprocessor.• Disabled — Does not allow the TurboBoost driver t

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Power ManagementWake on LAN This option allows the computer to power up from the off statewhen triggered by a special LAN signal. Wake-up from theStan

Virtualization Supportprovided by Intel® Virtualization Technology. Enable Intel®Virtualization Technology — This option is enabled by default.VT for

Image ServerNOTE: This field is only relevant when the "Integrated NIC"control in the "System Configuration" group is set to"

System Logs• Clear LogDellDiag Events Displays the DellDiag event log.Thermal Events Displays the thermal event log and allows you to:• Clear LogPower

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Troubleshooting 21Diagnostic LEDsNOTE: The diagnostic LEDs only serve as an indicator of the progress through thePower-on Self-Test (POST) process. Th

• Ensure that the main power cable and front panelcable are securely connected to the system board.LEDPower ButtonProblem Description A possible syste

LEDPower ButtonProblemDescriptionMemory modules are detected, but a memory powerfailure has occurred.TroubleshootingSteps• If two or more memory modul

add the peripheral cards back one by one until you findthe bad one.LEDPower ButtonProblem Description Power connector not installed properly.Troublesh

• If the problem persists, the system board is faulty.LEDPower ButtonProblem Description A possible coin cell battery failure has occurred.Troubleshoo

Working on Your Computer 1Before Working Inside Your ComputerUse the following safety guidelines to help protect your computer from potentialdamage an

• If available, install working memory of the same typeinto your computer.LEDPower ButtonProblem Description A possible hard drive failure has occurre

• If available, install working memory of the same typeinto your computer.LEDPower ButtonProblem Description Memory modules are detected, but a memory

Power ButtonProblem Description A possible system board resource and/or hardwarefailure has occurred.TroubleshootingSteps• Clear CMOS.• Disconnect all

each set of beeps is 3 sec, and the beep sound lasts 300 ms. After each beepand each set of beeps, the BIOS should detect if the user presses the powe

Code 3-2-2Cause Interrupt vector loading failureCode 3-2-4Cause Keyboard Controller Test failureCode 3-3-1Cause NVRAM power lossCode 3-3-2Cause NVRAM

Code 4–3–1Cause Memory failure above address 0FFFFhCode 4–3–3Cause Timer-chip counter 2 failureCode 4–3–4Cause Time-of-day clock stoppedCode 4–4–1Caus

Alert! Security override Jumper is installed.Description The MFG_MODE jumper has been set and AMT Managementfeatures are disabled until it is removed.

Diskette subsystem reset failedDescription The floppy drive controller may be faulty.Gate A20 failureDescription One or more memory modules may be fau

Memory address line failure at address, read value expecting valueDescription A memory module may be faulty or improperly seated. Reinstallthe memory

No timer tick interruptDescription A chip on the system board might be malfunctioning.Non-system disk or disk errorDescription The floppy disk in driv

To avoid damaging your computer, perform the following steps before you beginworking inside the computer.1. Ensure that your work surface is flat and

Seek errorDescription The operating system cannot find a specific track on the floppydisk or hard drive.Shutdown failureDescription A chip on the syst

Write fault on selected driveDescription The operating system cannot write to the floppy or hard drive.X:\ is not accessible. The device is not readyD

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Specifications 22Technical SpecificationsNOTE: Offerings may vary by region. For more information regarding theconfiguration of your computer, click S

VideoIntegrated• Intel HD Graphics (with Intel Celeron/Pentium-class CPU-GPU combo)• Intel HD Graphics 2000 (with Intel Corei3 DC 65 W and Intel Core

CardsMini-Tower up to one full-height cardDesktop up to one low-profile cardSmall Form Factor noneUltra Small Form Factor nonePCI Express x1Mini-Tower

Drives3.5–inch SATA drive baysMini-TowertwoDesktoponeSmall Form FactoroneUltra Small Form Factornone2.5–inch SATA drive baysMini-TowertwoDesktoponeSma

External ConnectorsNOTE: Available video connectors mayvary based on the graphics cardselected.System Board ConnectorsPCI 2.3 data width (maximum) — 3

System Board ConnectorsMini-Tower four 7-pin connectorsDesktop three 7-pin connectorsSmall Form Factor three 7-pin connectorsUltra Small Form Factor t

System Board ConnectorsIntruder connector one 3-pin connectorPower connectorMini-Tower, Desktop,Small Form Factorone 24-pin and one 4-pin connectorUlt

Click Start , then click the arrow in the lower-right corner of the Startmenu as shown below, and then click Shut Down.• In Windows XP:Click Start → T

Controls and LightsOrange — a good 100 Mbpsconnection exists between thenetwork and the computer.Yellow — a good 1000 Mbpsconnection exists between th

Power Wattage MaximumHeatDissipationVoltageUltra SmallForm Factor200 W 758 BTU/hr 100 VAC to 240 VAC, 50 Hz to 60 Hz, 2.9 ACoin-cellbattery3 V CR2032

EnvironmentalStorage 105 GAltitude:Operating –15.2 m to 3048 m (–50 ft to 10,000 ft)Storage –15.2 m to 10,668 m (–50 ft to 35,000 ft)Airborne contamin

Contacting Dell 23Contacting DellTo contact Dell for sales, technical support, or customer service issues:1. Visit support.dell.com.2. Verify your cou