Dell OptiPlex 3090 Small Form Factor Service Manual
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Dell OptiPlex 3090 Small Form Factor Service Manual

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OptiPlex 3090 Small Form Factor
Service Manual
Regulatory Model: D15S
Regulatory Type: D15S001
October 2021
Rev. A00

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Summary of Contents for Dell OptiPlex 3090 Small Form Factor

  • Page 1 OptiPlex 3090 Small Form Factor Service Manual Regulatory Model: D15S Regulatory Type: D15S001 October 2021 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    After working inside your computer..........................9 Chapter 2: Removing and installing components................10 Recommended tools................................10 Screw list..................................... 10 Major components of OptiPlex 3090 Small Form Factor ..................11 Side cover.................................... 12 Removing the side cover............................12 Installing the side cover.............................. 13 Front bezel...................................15...
  • Page 4 Removing the heat-sink and fan assembly......................37 Installing the heat-sink and fan assembly......................37 Coin-cell battery................................38 Removing the coin-cell battery..........................38 Installing the coin-cell battery..........................39 Expansion card...................................40 Removing the graphics card............................. 40 Installing the graphics card............................41 Memory modules................................43 Removing the memory modules..........................43 Installing the memory modules..........................
  • Page 5 Dell SupportAssist Pre-boot System Performance Check diagnostics..............80 Running the SupportAssist Pre-Boot System Performance Check..............80 Diagnostics..................................80 Recovering the operating system..........................82 WiFi power cycle................................83 Flea power release................................83 Real Time Clock—RTC reset............................83 Chapter 6: Getting help and contacting Dell................85 Contents...

  • Page 6: Chapter 1: Working Inside Your Computer

    You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that is shipped with the product or at www.dell.com/regulatory_compliance.

  • Page 7: Safety Precautions

    ESD protection is an increasing concern. Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.

  • Page 8: Esd Field Service Kit

    It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.

  • Page 9: Transporting Sensitive Components

    Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport. After working inside your computer About this task NOTE: Leaving stray or loose screws inside your computer may severely damage your computer.

  • Page 10: Chapter 2: Removing And Installing Components

    Removing and installing components NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Recommended tools The procedures in this document may require the following tools: ● Phillips screwdriver #0 ● Phillips screwdriver #1 ●...

  • Page 11: Major Components Of Optiplex 3090 Small Form Factor

    6-32 M2x4 Major components of OptiPlex 3090 Small Form Factor The following image shows the major components of OptiPlex 3090 Small Form Factor . 1. Video connector 2. Intrusion switch connector 3. CPU power connector (ATX_CPU) 4. CPU fan connector 5.

  • Page 12: Side Cover

    NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options. Side cover Removing the side cover Prerequisites 1.

  • Page 13: Installing The Side Cover

    Steps 1. Slide the release latch to the right until your hear a click. 2. Slide the cover towards the back of the system. 3. Lift and move the side cover away from the system. Installing the side cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 14 Steps 1. Place the side cover onto the system aligning the tabs on the chassis. 2. Slide the side cover towards the front of the system until you hear the release latch click. Next steps 1. Follow the procedure in After working inside your computer.

  • Page 15: Front Bezel

    Front bezel Removing the front bezel Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. About this task The following images indicate the location of the front bezel and provide a visual representation of the removal procedure. Steps 1.

  • Page 16: 2.5-Inch Hard Drive

    About this task The following image indicates the location of the front bezel and provides a visual representation of the installation procedure. Steps 1. Align and insert the front cover into the slots on the chassis. 2. Rotate the front cover towards the chassis and snap it into place. Next steps 1.

  • Page 17: Removing The Hard-Drive Bracket

    Steps 1. Disconnect the hard-drive data cable and power cable from the connectors on the hard drive. 2. Push the left tab towards the hard drive to free the assembly from the chassis. 3. Release the hard-drive assembly from the tabs on the right side and slide the hard-drive assembly out. NOTE: Note the orientation of the hard drive so that you can replace it correctly.

  • Page 18: Installing The Hard-Drive Bracket

    Steps 1. Pull the two tabs from the hard-drive bracket away from the hard drive. 2. Slide the hard-drive towards the right to free it from the mounting points on the bracket and lift it away from the system. Installing the hard-drive bracket Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 19: Installing The 2.5-Inch Hard-Drive Assembly

    Steps 1. Align the hard drive with the mounting points on the bracket and place the hard drive onto it. 2. Pull the tabs on the right side of the bracket until the hard drive clicks into place. Next steps 1.

  • Page 20: 3.5-Inch Hard Drive

    Steps 1. Place the tabs on the right side of the hard-drive bracket onto the holders on the chassis and push the left side of the bracket down until it clicks into place. NOTE: Use the arrows seen on the bracket as guides to identify the tabs on the tray. 2.

  • Page 21: Removing The 3.5-Inch Hard Drive

    About this task The following images indicate the location of the 3.5-inch hard-drive assembly and provides a visual representation of the removal procedure. Steps 1. Disconnect the hard-drive data cable and power cable from the connectors on the hard drive. 2.

  • Page 22: Installing The 3.5-Inch Hard Drive

    Steps 1. Pull the two tabs from the hard-drive caddy away from the hard drive. 2. Slide the hard-drive towards the right to free it from the mounting points on the caddy and lift it away from the system. Installing the 3.5-inch hard drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 23: Installing The 3.5-Inch Hard-Drive Assembly

    Steps 1. Align the hard drive with the mounting points on the caddy and place the hard drive onto it. 2. Pull the tabs on the right side of the bracket until the hard drive clicks into place. Next steps 1.

  • Page 24: M.2 Solid-State Drive

    Steps 1. Place the tabs on the right side of the hard-drive caddy onto the holders on the chassis and push the left side of the caddy down until it clicks into place. NOTE: Use the arrows seen on the caddy as guides to identify the tabs on the tray. 2.

  • Page 25: Installing The M.2 2230 Pcie Solid-State Drive

    About this task The following images indicate the location of the solid-state drive and provide a visual representation of the removal procedure. Steps 1. Remove the screw (M2x3) that secures the solid-state drive to the system board. 2. Slide and lift the solid-state drive off the system board. Installing the M.2 2230 PCIe solid-state drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 26: Removing The M.2 2280 Pcie Solid-State Drive

    Steps 1. Align the solid-state drive with the socket on the system board and slide it in. 2. Replace the screw (M2X3) that secures the M.2 PCIe solid-state drive to the system board. Next steps 1. Install the hard-drive and optical-drive bracket.

  • Page 27: Installing The M.2 2280 Pcie Solid-State Drive

    Steps 1. Move the cables held by the cable management tab to access the metal bracket underneath. 2. Remove the two (6x32) screws securing the metal bracket and lift it away from the system. 3. Remove the screw (M2x3) that secures the solid-state drive to the system board. 4.
  • Page 28 Steps 1. Align the solid-state drive with the socket on the system board and slide it in. 2. Replace the screw (M2x3) that secures the solid-state drive to the system board. 3. Route the SATA cables through the cable management tab. 4.

  • Page 29: Optical Drive

    Optical drive Removing the slim optical-drive Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the front bezel. 4. Remove the hard-drive and optical-drive bracket. About this task The following images indicate the location of the slim optical-drive and provide a visual representation of the removal procedure. Steps 1.

  • Page 30: Installing The Slim Optical-Drive

    Installing the slim optical-drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the slim optical-drive and provides a visual representation of the installation procedure.

  • Page 31: Hard-Drive And Optical-Drive Bracket

    Hard-drive and optical-drive bracket Removing the hard-drive and optical-drive bracket Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the front bezel. 4. Remove the 2.5/3.5-inch hard-drive About this task The following images indicate the location of the hard-drive and optical-drive bracket and provide a visual representation of the removal procedure.

  • Page 32: Installing The Hard-Drive And Optical-Drive Bracket

    Steps 1. Remove the hard-drive power and data cables that are routed via the locking mechanism. 2. Remove the cables from the routing points on the bracket. 3. Move the lock handle from the locking mechanism towards the left to unlock the bracket and detach it from the chassis. 4.
  • Page 33 Removing and installing components...

  • Page 34: Wlan Card

    Steps 1. Connect the power and SATA cables to the optical drive while holding the bracket upside down. 2. Hold the bracket upright and align the mounting points with the ones on the chassis. 3. Push the bracket until the assembly is secured onto the chassis. 4.

  • Page 35: Installing The Wlan Card

    About this task The following images indicate the location of the wireless card and provide a visual representation of the removal procedure. Steps 1. Remove the single (M2x3) screw that secures the metal bracket over the WLAN card to the system board. 2.
  • Page 36 Steps 1. Connect the antenna cables to the WLAN card. The following table provides the antenna-cable color scheme for the WLAN card of your computer. Table 2. Antenna-cable color scheme Connectors on the wireless card Antenna-cable color Main (white triangle) White Auxiliary (black triangle) Black...

  • Page 37: Fan Assembly

    Fan assembly Removing the heat-sink and fan assembly Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the front bezel. 4. Remove the 3.5/2.5-inch hard-drive assembly. 5. Remove the hard-drive and optical-drive bracket.

  • Page 38: Coin-Cell Battery

    Steps 1. Place the heat-sink and fan assembly onto the system board. 2. Tighten the captive screws that secure the heat-sink and fan assembly to the system board. 3. Connect the fan cable to the connector on the system board. Next steps 1.

  • Page 39: Installing The Coin-Cell Battery

    Steps 1. Using a plastic scribe, gently pry the coin-cell battery out of the socket on the system board. 2. Remove the coin-cell battery from the system. Installing the coin-cell battery Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the coin-cell battery and provides a visual representation of the installation procedure.

  • Page 40: Expansion Card

    Steps 1. Place the coin cell battery onto the socket on the system board. Ensure that the "+" sign is facing up and the tabs on the lower portion of the socket and holding the battery. 2. Gently push the battery into the socket until it locks in place. Next steps 1.

  • Page 41: Installing The Graphics Card

    Steps 1. Pull the metal tab to open the expansion card latch. 2. Pull the release tab at the base of the expansion card. 3. Lift the graphics card away from the connector on the system board. Installing the graphics card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 42 Steps 1. Align the graphics card with the connector on the system board. 2. Place the card in the connector and press down firmly. NOTE: Ensure that the card is firmly seated. 3. Close the expansion card latch and press it until it clicks into place. Next steps 1.

  • Page 43: Memory Modules

    Memory modules Removing the memory modules Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the 3.5/2.5-inch hard-drive assembly. 4. Remove the hard-drive and optical-drive bracket. NOTE: CAUTION: To prevent damage to the memory module, hold the memory module by the edges. Do not touch the components on the memory module.

  • Page 44: Processor

    Steps 1. Align the notch on the memory module with the tab on the memory-module slot. 2. Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place. NOTE: If you do not hear the click, remove the memory module and reinstall it.

  • Page 45: Installing The Processor

    Steps 1. Press down and push the release lever away from the processor to release it from the securing tab. 2. Lift the lever upward to lift the processor cover. CAUTION: When removing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.
  • Page 46 Steps 1. Align the pin-1 corner of the processor with the pin 1 corner of the processor socket, and then place the processor in the processor socket. NOTE: The pin-1 corner of the processor has a triangle that aligns with the triangle on the pin-1 corner on the processor socket.

  • Page 47: Power-Supply Unit

    Power-supply unit Removing the power-supply unit Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the 3.5/2.5-inch hard-drive assembly. 4. Remove the hard-drive and optical-drive bracket. About this task The following images indicate the location of the power-supply unit and provide a visual representation of the removal procedure.
  • Page 48 Removing and installing components...

  • Page 49: Installing The Power-Supply Unit

    Steps 1. Remove the SATA cables from the retention clip on the support bracket. 2. Remove the three screws (M6X32) and slide the support bracket out from the slot. 3. Unroute the power-supply cable from the retention clip on the chassis. 4.
  • Page 50 Removing and installing components...
  • Page 51 Removing and installing components...

  • Page 52: Intrusion Switch

    Steps 1. Align and place the power-supply unit into the slot on the chassis. 2. Slide the power-supply unit into the slot until it clicks in place. 3. Replace the three screws (6X32) to secure the power-supply unit to the chassis. 4.

  • Page 53: Installing The Intrusion Switch

    Steps 1. Disconnect the intruder cable from the connector on the system board. 2. Slide and remove the intrusion switch from the chassis. Installing the intrusion switch Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the intrusion switch and provides a visual representation of the installation procedure.

  • Page 54: Power Button

    Steps 1. Insert the intrusion switch into its slot and slide the switch to secure it into the slot. 2. Connect the intruder cable to the connector on the system board. Next steps 1. Install the side cover. 2. Follow the procedure in After working inside your computer.

  • Page 55: Installing The Power Button

    Steps 1. Disconnect the power-button cable from the connector on the system board. 2. Press the release tabs on the power-button head and slide the power-button cable out from the front-side chassis of the computer. 3. Pull the power-button cable out from the computer. Installing the power button Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 56: Optional I/O Modules (Hdmi/Vga/Dp/Serial)

    Steps 1. Insert the power-button cable into the slot from the front-side of the computer, and press the power-button head until it clicks into the place in the chassis. 2. Align and connect the power-button cable to the connector on the system board. Next steps 1.

  • Page 57: Installing Optional I/O Modules (Hdmi/Vga/Dp/Serial)

    Steps 1. Remove the two (M3X3) screws that secure the optional I/O module to the computer chassis. 2. Disconnect the I/O-module cable from the connector on the system board. 3. Remove the I/O module from the computer. Installing optional I/O modules (HDMI/VGA/DP/Serial) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 58: System Board

    2. Insert the optional I/O module into its slot from the inside of your computer. 3. Connect the I/O cable to the connector on the system board . 4. Replace the two (M3X3) screws to secure the optional I/O module to the system. Next steps 1.
  • Page 59 Removing and installing components...
  • Page 60 Removing and installing components...

  • Page 61: Installing The System Board

    Steps 1. Remove the single (6x32) screw that secures the I/O panel to the chassis. 2. Lift the I/O panel away from the chassis. 3. Disconnect the intrusion switch cable from the connector on the system board. 4. Disconnect the system board power supply cables from the connector on the system board. 5.
  • Page 62 Removing and installing components...
  • Page 63 Removing and installing components...
  • Page 64 Steps 1. Align and lower the system board into the system until the connectors at the back of the system board align with the slots on the chassis, and the screw holes on the system board align with the standoffs on the system. 2.
  • Page 65 3. Install the WLAN card. 4. Install the solid-state drive. 5. Install the memory modules. 6. Install the 3.5/2.5-inch hard-drive assembly. 7. Install the front bezel. 8. Install the side cover. 9. Follow the procedure in After working inside your computer.

  • Page 66: Chapter 3: Drivers And Downloads

    Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article, Drivers and Downloads FAQ 000123347. Drivers and downloads...

  • Page 67: Chapter 4: Bios Setup

    BIOS setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program. Certain changes can make your computer work incorrectly. NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed. NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information for future reference.

  • Page 68: One Time Boot Menu

    Table 3. Navigation keys (continued) Keys Navigation Moves to the previous page until you view the main screen. Pressing Esc in the main screen displays a message that prompts you to save any unsaved changes and restarts the system. One time boot menu To enter one time boot menu, turn on your computer, and then press F12 immediately.

  • Page 69: System Information

    System information Table 5. System Configuration Option Description Integrated NIC Allows you to control the onboard LAN controller. The option ‘Enable UEFI Network Stack’ is not selected by default. The options are: ● Disabled ● Enabled ● Enabled w/PXE (default) NOTE: Depending on the computer and its installed devices, the items that are listed in this section may or may not appear.

  • Page 70: Video Screen Options

    Video screen options Table 6. Video Option Description Primary Display Allows you to select the primary display when multiple controllers are available in the system. ● Auto (default) ● Intel HD Graphics NOTE: If you do not select Auto, the on-board graphics device will be present and enabled.

  • Page 71: Secure Boot Options

    Table 7. Security (continued) Option Description Absolute This field lets you Enable, Disable or permanently Disable the BIOS module interface of the optional Absolute Persistence Module service from Absolute Software. ● Enabled - This option is selected by default. ● Disable ●...

  • Page 72: Intel Software Guard Extensions Options

    Table 8. Secure Boot (continued) Option Description ● Delete All Keys- Deletes all the keys NOTE: If you disable the Custom Mode, all the changes made will be erased and the keys will restore to default settings. Intel Software Guard Extensions options Table 9.

  • Page 73: Power Management

    Table 10. Performance (continued) Option Description This option is set by default. Hyper-Thread Control Allows you to enable or disable the HyperThreading in the processor. ● Disabled ● Enabled—Default Power management Table 11. Power Management Option Description AC Recovery Determines how the system responds when AC power is re-applied after a power loss. You can set the AC Recovery to: ●...

  • Page 74: Post Behavior

    Post behavior Table 12. POST Behavior Option Description Adapter Warnings This option lets you choose whether the system displays warning messages when you use certain power adapters. This option is enabled by default. Numlock LED Allows you to enable or disable the Numlock feature when your computer starts. This option is enabled by default.

  • Page 75: Wireless Options

    Table 13. Virtualization Support (continued) Option Description This option is set by default. VT for Direct I/O Enables or disables the Virtual Machine Monitor (VMM) from utilizing the additional hardware capabilities provided by the Intel Virtualization technology for direct I/O. ●...

  • Page 76: System Logs

    If the recovery key is not known this can result in data loss or an unnecessary operating system re-install. For more information on this subject, see Knowledge Article: https:// www.dell.com/support/article/sln153694 Steps 1. Go to www.dell.com/support. BIOS setup...

  • Page 77: Updating The Bios In Linux And Ubuntu

    8. Double-click the BIOS update file icon and follow the on-screen instructions. For more information, see knowledge base article 000124211 at www.dell.com/support. Updating the BIOS in Linux and Ubuntu To update the system BIOS on a computer that is installed with Linux or Ubuntu, see the knowledge base article 000131486 www.dell.com/support.

  • Page 78: System And Setup Password

    One-Time boot menu on the computer. Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12 One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the BIOS supports this BIOS update option.

  • Page 79: Deleting Or Changing An Existing System Setup Password

    Clearing BIOS (System Setup) and System passwords About this task To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell. NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application.

  • Page 80: Chapter 5: Troubleshooting

    Check diagnostics About this task SupportAssist diagnostics (also known as system diagnostics) performs a complete check of your hardware. The Dell SupportAssist Pre-boot System Performance Check diagnostics is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of options for particular devices or device groups allowing you to: ●...
  • Page 81 Table 19. Power LED summary Amber LED state White LED state System state Notes S4, S5 ● Hibernate or Suspend to Disk (S4) ● Power is off (S5) Blinking S1, S3 System is in a low power state, either S1 or S3. This does not indicate a fault condition.

  • Page 82: Recovering The Operating System

    It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures.

  • Page 83: Wifi Power Cycle

    Real Time Clock—RTC reset The Real Time Clock (RTC) reset function allows you or the service technician to recover the recently launched model Dell Latitude and Precision systems from No POST/No Boot/No Power situations. You can initiate the RTC reset on the system from a power-off state only if it is connected to AC power.
  • Page 84 The below items may or may not reset based on your custom BIOS setting selections: ● Boot List ● Enable Legacy Option ROMs ● Secure Boot Enable ● Allow BIOS Downgrade Troubleshooting...

  • Page 85: Chapter 6: Getting Help And Contacting Dell

    Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 22. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell app...

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