Dell OptiPlex 990 (Early 2011) Small Form Factor- User Manual

2 Cover Removing the Cover 1. Follow the procedures in Before Working Inside Your Computer . 2. Pull up the cover-release latch at the side of the computer. 3. Lift the cover upward to a 45–degree angle and remove it from the computer. 11

Installing The Cover 1. Place the computer cover on the chassis.2. Press down on the computer cover, until it clicks into place.3. Follow the procedures in After Working Inside Your Computer . 12

3 Front Bezel Removing the Front Bezel 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Pry the front bezel retention clips away from the chassis. 4. Rotate the bezel away from the computer to release the hooks on the opposite edge of the bezel from the chas...

Installing The Front Bezel 1. Insert the four hooks along the bottom edge of the front bezel into the slots on the chassis front. 2. Rotate the bezel toward the computer to engage the front bezel retention clips until they click into place. 3. Install the cover . 4. Follow the procedures in After Wo...

4 Expansion Card Tab Removing the Expansion Card 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Rotate the release tab on the card-retention latch upward. 5. Pull the release lever away from the PCIe x16 card until you release t...

6. Pull the release lever away from the PCIe x4 card (if any) to release the securing tab from the dent in the card. Then, ease the card up and out of its connector and remove it from the computer. Installing The Expansion Card 1. Insert the PCIe x4 card into the connector on the system board and pr...

5 Optical Drive Removing the Optical Drive 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the data cable and power cable from the back of the optical drive. 4. Lift the blue tab and slide the optical drive inwards to remove it from the computer. 5. ...

Installing The Optical Drive 1. Insert the optical drive into the bracket.2. Lift the blue tab and slide the optical drive outwards to insert it into the computer. 3. Connect the data cable and power cable to the optical drive.4. Install the cover . 5. Follow the procedures in After Working Inside Y...

6 Hard Drive Removing the Hard Drive 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the hard drive from the chassis. 4. Press the retention clips inwards and slide the hard-drive bracket from the drive cage. 5. Flex the hard-drive bracket and then r...

6. Release the screws that secure the 2.5 inch hard drive to the top of the hard-drive bracket. 7. Release the screws that secure the 2.5 inch hard drive to the underside of the hard-drive bracket. Installing The Hard Drive 1. Tighten the screws to secures the two hard drives to the hard drive brack...

7 Memory Removing the Memory 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Remove the drive cage . 5. Release the memory-retention clips on each side of the memory modules. 6. Lift the memory modules out of the connectors on th...

Installing The Memory 1. Insert the memory modules into the connectors on the system board. Install the memory modules in the order of A1 > B1 > A2 > B2. 2. Press down on the memory modules until the retention clips spring back to secure them in place. 3. Install the drive cage . 4. Install...

8 Chassis Intrusion Switch Removing the Chassis Intrusion Switch 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Disconnect the intrusion-switch cable from system board. 4. Slide the intrusion switch inwards and remove it from the system board. 23

Installing The Intrusion Switch 1. Insert the intrusion switch into the chassis rear and slide it outward to secure it. 2. Connect the intrusion-switch cable to the system board.3. Install the cover . 4. Follow the procedures in After Working Inside Your Computer . 24

9 Speaker Removing the Speaker 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Remove the drive cage . 5. Disconnect the speaker cable from the system board. 6. Unthread the speaker cable from the fan shelter clip. 25

7. Press the speaker securing tab, and slide the speaker towards the right of the computer to release it. 8. Remove the speaker from the chassis. Installing The Speaker 1. Place the speaker on the appropriate location of the chassis rear. 2. Press the speaker-securing tab and slide the speaker towar...

10 Heat Sink Removing the Heat Sink and Processor 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Remove the drive cage . 5. Disconnect the heat-sink assembly cable from the system board. 6. Release the Input/Output Board or the ...

11. Lift the processor to remove it from the socket and place it in an antistatic package. Installing The Heat Sink And Processor 1. Insert the processor into the processor socket. Ensure the processor is properly seated. 2. Lower the processor cover.3. Press the release lever down and then move it ...

11 Coin-Cell Battery Removing the Coin-Cell Battery 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Press the coin-cell battery inward to allow the battery to pop up from the socket. 5. Lift the coin-cell battery out of the compu...

Installing The Coin-Cell Battery 1. Place the coin-cell battery into its slot on the system board.2. Press the coin-cell battery downwards till it is secured.3. Install the front bezel . 4. Install the cover . 5. Follow the procedures in After Working Inside Your Computer . 32

12 Power-Switch Cable Removing the Power-Switch Cable 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Remove the drive cage . 5. Disconnect the power-switch cable from the system board. 6. Unthread the power-switch cable from the...

8. Slide the power-switch cable out through the front of the computer. Installing the Power-Switch Cable 1. Slide the power-switch cable in through the front of the computer.2. Secure the power-switch cable to the chassis.3. Thread the power-switch cable into the chassis clip.4. Connect the power-sw...

13 Chassis Fan Removing the System Fan 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Remove the drive cage . 5. Remove the fan shelter . 6. Disconnect the fan cable from the system board. 7. Slide the grommets inward along the ...

8. Lift and remove the system fan from the computer. 9. Pry up the grommets from the system fan and remove it. Installing The System Fan 1. Insert the four grommets into the system fan. 2. Place the system fan in the chassis. 3. Pass the four grommets through the chassis and slide outward along the ...

15 Power Supply Removing the Power Supply 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Remove the drive cage . 5. Remove the fan shelter . 6. Disconnect the 4-pin power cable from the system board. 7. Unthread the 4–pin power ...

Installing The Power Supply 1. Place the power supply in the chassis and slide outward to secure it.2. Tighten the three screws securing the power supply to the back of the computer. 3. Connect the power cable to the system board.4. Thread the power cable into the chassis clips.5. Connect the power ...

16 System Board Removing the System Board 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Remove the drive cage . 5. Remove the expansion cards . 6. Remove the heat sink and processor . 7. Remove the fan shelter . 8. Disconnect a...

13. Remove the system board from the chassis. Installing The System Board 1. Align the system board to the port connectors on the rear of the chassis and place the system board in the chassis. 2. Tighten the 7–mm hex screw securing the system board to the chassis.3. Tighten the screws securing the s...

17 Drive Cage Removing the Drive Cage 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Remove the front bezel . 4. Remove the data cable and power cable from the back of the optical drive. 5. Slide the drive-cage handle toward the back of the computer into t...

7. Remove the data cable and power cable from the back of the hard drive. 8. Remove the drive cage from the computer. Installing The Drive Cage 1. Place the drive cage on the edge of the computer to allow access to the cable connectors on the hard drive. 2. Connect the data cable and power cable to ...

18 Fan Shelter Removing the Fan Shelter 1. Follow the procedures in Before Working Inside Your Computer . 2. Remove the cover . 3. Unthread the cables in the fan shelter clip. 4. Lift the fan shelter free from the computer. Installing The Fan Shelter 1. Insert the fan shelter into the computer.2. Th...

19 System Setup System Setup This computer offers you the following options: • Access System Setup by pressing <F2>• Bring up a one-time boot menu by pressing <F12> Press <F2> to enter System Setup and make changes to the user-definable settings. If you have trouble entering System...

Partition. The benefit here is that you do not have to remember the <Ctrl><Alt><D> and <Ctrl><Alt><F10> keystrokes (although they still work). NOTE: The BIOS features an option to disable either or both of the keystrokeprompts under the System Security / Post Hotk...

Beep Codes and Text Error Messages The OptiPlex BIOS is capable of displaying error messages in plain English, along with beep codes. If the BIOS determine the previous boot was unsuccessful, it displays an error message similar to the following: Previous attempts at booting the system have failed a...

20 Troubleshooting Diagnostic LEDs NOTE: The diagnostic LEDs only serve as an indicator of the progress through thePower-on Self-Test (POST) process. These LEDs do not indicate the problem thatcaused the POST routine to stop. The diagnostic LEDs are located on the front of the chassis next to the po...

Problem Description A possible system board resource and/or hardware failure hasoccurred. TroubleshootingSteps • Clear CMOS.• Disconnect all internal and external peripherals, and restart the computer. If the computer boots, add the peripheral cards back one by one until you find the bad one. • If t...

Code 4–3–3 Cause Timer-chip counter 2 failure Code 4–3–4 Cause Time-of-day clock stopped Code 4–4–1 Cause Serial or parallel port test failure Code 4–4–2 Cause Failure to decompress code to shadowed memory Code 4–4–3 Cause Math coprocessor test failure Code 4–4–4 Cause Cache test failure Error Messa...

Alert! Security override Jumper is installed. Description The MFG_MODE jumper has been set and AMT Management features are disabled until it is removed. Attachment failed to respond Description The floppy or hard drive controller cannot send data to the associated drive. Bad command or file name Des...

Write fault on selected drive Description The operating system cannot write to the floppy or hard drive. X:\ is not accessible. The device is not ready Description The floppy drive cannot read the disk. Insert a floppy disk into the drive and try again. 87

21 Specifications Technical Specifications NOTE: Offerings may vary by region. For more information regarding the configuration of your computer, click Start (or Start in Windows XP) Help and Support, and then select the option to view information about your computer. Processor Processor type • Inte...

22 Contacting Dell Contacting Dell To contact Dell for sales, technical support, or customer service issues: 1. Visit support.dell.com.2. Verify your country or region in the Choose a Country/Region drop-down menu at the bottom of the page. 3. Click Contact Us on the left side of the page.4. Select ...