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Dell OptiPlex 7090 Micro Form Factor Service Manual
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Dell OptiPlex 7090 Micro Form Factor Service Manual

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OptiPlex 7090 Micro Form Factor
Service Manual
Regulatory Model: D14U
Regulatory Type: D14U004/D14U005
May 2021
Rev. A00

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Summary of Contents for Dell OptiPlex 7090 Micro Form Factor

  • Page 1 OptiPlex 7090 Micro Form Factor Service Manual Regulatory Model: D14U Regulatory Type: D14U004/D14U005 May 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

    Contents Chapter 1: Working inside your computer..................5 Safety instructions................................5 Before working inside your computer........................5 Safety precautions................................ 6 Electrostatic discharge—ESD protection....................... 6 ESD field service kit ..............................7 Transporting sensitive components.......................... 8 After working inside your computer..........................8 Chapter 2: Removing and installing components................9 Recommended tools................................
  • Page 4 Display built-in self test..............................59 Diagnostics..................................59 Recovering the operating system..........................61 Flashing BIOS (USB key)..............................61 Flashing the BIOS................................61 System error messages..............................62 WiFi power cycle................................62 Flea power release................................63 Chapter 6: Getting help and contacting Dell................64 Contents...

  • Page 5: 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 6: 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 7: 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 8: 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 CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.

  • Page 9: 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 require the following tools: ● Phillips #0 screwdriver ● Phillips #1 screwdriver ●...
  • Page 10 Table 1. Screw list (continued) Component Screw type Quantity Image M.2 2230/2280 Solid-state drive M2x3.5 Discrete graphics processing units (DGPU) M3x5 bracket Removing and installing components...

  • Page 11: Major Components Of Your System

    Major components of your system 1. Side cover Removing and installing components...

  • Page 12: Side Cover

    14. 2.5-inch hard-disk drive assembly 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.
  • Page 13 Steps 1. Loosen the thumbscrew (6x32) that secures the side cover to the system. Removing and installing components...

  • Page 14: Installing The Side Cover

    2. Slide the side cover towards the front of the system and lift the cover. Installing the side cover 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 side cover and provides a visual representation of the installation procedure. Removing and installing components...

  • Page 15: Front Bezel

    Steps 1. Align the side cover with the grooves on the chassis. 2. Slide the side cover towards the back of the system to install it. 3. Tighten the thumbscrew (6x32) to secure the side cover to the system. Next steps 1.

  • Page 16: Installing The Front Bezel

    Steps 1. Pry the retention tabs to release the front bezel from the system. 2. Remove the front bezel from the system. Installing the front bezel 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 front bezel and provides a visual representation of the installation procedure.

  • Page 17: Solid-State Drive

    Steps 1. Position the bezel to align the tabs with the slots on the chassis. 2. Press the bezel until the release tabs click into place. Next steps 1. Install the side cover. 2. Follow the procedure in after working inside your computer.

  • Page 18: Installing The M.2 2230 Pcie Solid-State Drive

    Steps 1. Remove the screw (M2x3.5) 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. About this task The following image indicates the location of the solid-state drive and provides a visual representation of the installation procedure.

  • Page 19: Removing The M.2 2280 Pcie Solid-State Drive

    Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector on the system board. 2. Insert the solid-state drive at a 45-degree angle into the solid-state drive connector. 3. Replace the screw (M2x3.5) that secures the M.2 2230 PCIe solid-state drive to the system board. Next steps 1.

  • Page 20: Installing The M.2 2280 Pcie Solid-State Drive

    Steps 1. Remove the screw (M2x3.5) 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 2280 PCIe solid-state 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 solid-state drive and provides a visual representation of the installation procedure.

  • Page 21: Wlan Card

    Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector on the system board. 2. Insert the solid-state drive at a 45-degree angle into the solid-state drive connector. 3. Replace the screw (M2x3.5) that secures the M.2 2280 PCIe solid-state drive to the system board. Next steps 1.

  • Page 22: Installing The Wlan Card

    Steps 1. Using a plastic scribe pry open the WWAN card shielding cover from the sides of the WWAN card shielding cover. 2. Lift the WWAN card shielding cover away from the the computer. 3. Remove the (M2x3.5) screw that secures the WLAN card bracket to the system board. 4.
  • Page 23 About this task The following image indicates the location of the wireless card and provides a visual representation of the installation procedure. 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.

  • Page 24: Fan Assembly

    2. Place the WLAN card bracket to secure the antenna cables. 3. Align the notch on the WLAN card with the tab on the WLAN card slot. Insert the WLAN card into the connector on the system board. 4. Replace the (M2x3.5) screw to secure the WLAN card bracket to the WLAN card. 5.

  • Page 25: Installing The Fan Assembly-Discrete Configuration

    Steps 1. Disconnect the fan cable from the connector on the system board. 2. Remove the three (M3x25)screws that secures the fan assembly to the system board. 3. Lift the fan assembly away from the system board. Installing the fan assembly-Discrete configuration Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 26: Coin-Cell Battery

    Steps 1. Align and place the fan assembly on the system board. 2. Replace the three (M3x25) screws that secures the fan assembly to the system board. 3. Connect the fan cable to the connector on the system board. Next steps 1.

  • Page 27: Installing The Coin-Cell Battery

    About this task The following images indicate the location of the coin-cell battery and provide a visual representation of the removal procedure. Steps 1. Using a plastic scribe, gently pry the coin-cell battery out of the battery socket on the system board. 2.

  • Page 28: Memory Modules

    Steps 1. Insert the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the connector. 2. Press the battery into the connector until it locks into place. Next steps 1.

  • Page 29: Installing The Memory Modules

    Steps 1. Pull the securing clips from the memory module until the memory module pops up. 2. Slide and remove the memory module from the memory-module slot. Installing the memory modules 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 memory modules and provides a visual representation of the installation procedure.

  • Page 30: Speaker

    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 31: Installing The Speaker

    Steps 1. Disconnect the speaker cable from the system board. 2. Press the release tab and lift the speaker along with the cable from the system board. Installing the speaker 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 speaker and provides a visual representation of the installation procedure.

  • Page 32: Processor

    Steps 1. Align and insert the speaker into the slot and press it until the release tab clicks. 2. Connect the speaker cable to the system board. Next steps 1. Install the fan assembly (This applies to 35 W and 65 W configuration systems). 2.

  • Page 33: 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 34 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 35: System Board

    System board Removing the system board Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the graphics card 4. Remove the solid-state drive. 5. Remove the WLAN card. 6. Remove the assembly.
  • Page 36 1. M.2 WLAN card connector 2. M.2 SSD PCIe connector 3. 2.5-inch hard-drive connector 4. Coin-cell battery 5. Optional video connector (VGA Port/DisplayPort 1.4 Port/HDMI 2.0b Port) 6. Optional connector (USB 3.2 Gen 2 Type-C Port) 7. Optional Keyboard and mouse serial port connector 8.
  • Page 37 1. M.2 WLAN card connector 2. 2.5-inch hard-drive connector 3. M.2 SSD PCIe connector 4. Coin-cell battery 5. Optional video connector (VGA Port/DisplayPort 1.4 Port/HDMI 2.0b Port) 6. Optional connector (USB 3.2 Gen 2 Type-C Port) 7. Optional Keyboard and mouse serial port connector 8.
  • Page 38 Removing and installing components...

  • Page 39: Installing The System Board

    Steps 1. Remove the screw (6-32) that secures the hard drive support to the system board. 2. Lift the hard drive support away from the system board. 3. Remove the three (M3x4) screws and three (6-32) screws that secure the system board to the chassis. 4.
  • Page 40 Removing and installing components...

  • Page 41: Graphics Card

    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 42: Installing The Graphics Card

    About this task The following image indicates the location of the graphics card and provides a visual representation of the removal procedure. Steps Push and hold the securing tab on the graphics-card slot and lift the graphics card assembly away from the computer. Installing the graphics card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 43 Steps Align the graphics card on the system board and press down firmly. Ensure that the card is firmly seated. Next steps 1. Install the side cover. 2. Follow the procedure in after working inside your computer. Removing and installing components...

  • Page 44: Chapter 3: Software

    ● Ubuntu Linux 20.04 LTS, 64-bit ● Windows 10 CMIT Government Edition 64-bit (China only) Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article, Drivers and Downloads FAQ SLN128938. Software...

  • Page 45: Chapter 4: System Setup

    Steps 1. Restart the computer. 2. Go to Dell.com/support. ● Enter the Service Tag or Express Service Code and click Submit. ● Click Detect Product and follow the instructions on screen. 3. If you are unable to detect or find the Service Tag, click Choose from all products.

  • Page 46: Updating Bios On Systems With Bitlocker Enabled

    3. Insert the USB flash drive into the computer that requires the BIOS update. 4. Restart the computer and press F12 when the Dell logo appears to display the One Time Boot Menu. 5. Using arrow keys, select USB Storage Device and press Enter.

  • Page 47: Entering Bios Setup Program

    Boot sequence enables you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical drive or hard drive). During the Power-on Self-Test (POST), when the Dell logo appears, you can: ● Access System Setup by pressing F2 key ●...
  • Page 48 Table 3. System setup options—System information menu (continued) Overview Asset Tag Displays the Asset Tag of the computer. Manufacture Date Displays the manufacture date of the computer. Ownership Date Displays the ownership date of the computer. Express Service Code Displays the express service code of the computer. Ownership Tag Displays the Ownership Tag of the computer.
  • Page 49 Table 3. System setup options—System information menu (continued) Overview Slot 2 Displays the SATA hard drive information of the computer. Slot 3 Displays the SATA hard drive information of the computer. Slot 4 Displays the SATA hard drive information of the computer. Table 4.
  • Page 50 Table 5. System setup options—Integrated Devices menu (continued) Integrated Devices By default, the Disabled option is enabled. Table 6. System setup options—Storage menu Storage SATA Operation Enable or disable the operating mode of the integrated SATA hard drive controller. By default, the AHCIoption is enabled. Storage Interface Port Enablement Enable or disable the onboard drives.
  • Page 51 Table 7. System setup options—Display menu (continued) Display By default, the option is enabled. Primary Display Video Primary Display Determines the primary display when multiple controllers are available on the computer By default, the Auto option is enabled. Full Screen Logo Enable or disable full screen logo.
  • Page 52 Table 9. System setup options—Power menu (continued) Power Active State Power Management Aspm Enables or disables the Active State Power Management (ASPM) level By default, the Auto option is enabled. Block Sleep Enables to block entering sleep (S3) mode in the operating system. By default, the Block Sleep option is disabled.
  • Page 53 By default, the option is disabled. Allow Non-Admin PSID Revert Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt. By default, the option is disabled. System setup...
  • Page 54 By default, the option is enabled. Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell OS Recovery Tool. By default, the threshold value is set to 2. Table 13. System setup options—System Management menu...
  • Page 55 Table 13. System setup options—System Management menu (continued) System Management By default, the option is enabled. Table 14. System setup options—Keyboard menu Keyboard Keyboard Errors Enable Keyboard Error Detection Enable or disable the keyboard error detection. By default, the option is enabled. Numlock LED Enable Numlock LED Enable or disable Numlock LED.

  • Page 56: Clearing Cmos Settings

    Table 17. System setup options—Performance menu Performance Multi Core Support Active Cores Enables to change the number of CPU cores available to the operating system. By default, the All Cores options are enabled. Intel SpeedStep Enable Intel SpeedStep Technology Enables the computer to dynamically adjust processor voltage and core frequency, decreasing average power consumption and heat production.

  • Page 57: Assigning A System Setup Password

    You can create a system password and a setup password to secure your computer. CAUTION: The password features provide a basic level of security for the data on your computer. CAUTION: Anyone can access the data stored on your computer if it is not locked and left unattended. NOTE: System and setup password feature is disabled.

  • Page 58: Clearing Bios (System Setup) And System Passwords

    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 59: Chapter 5: Troubleshooting

    Troubleshooting SupportAssist diagnostics About this task The SupportAssist diagnostics (previously known as ePSA diagnostics) performs a complete check of your hardware. The SupportAssist diagnostics is embedded in the BIOS and is launched by it internally. The SupportAssist diagnostics provides a set of options for particular devices or device groups.
  • Page 60 The following table shows different light patterns and what they indicate: Table 20. Diagnostic LED behavior Blinking pattern Problem description Suggested resolution Amber White MBIST: TPM Detection Failure Replace the system board. MBIST:SPI flash, Unrecoverable SPI flash Replace the system board. failure i-Fuse: Failure EC unable to program i-Fuse Replace the system board.

  • Page 61: 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 62: System Error Messages

    The computer failed to complete the boot routine three system have failed at checkpoint [nnnn]. For consecutive times for the same error. help in resolving this problem, please note this checkpoint and contact Dell Technical Support CMOS checksum error RTC is reset, BIOS Setup default has been loaded.

  • Page 63: Flea Power Release

    Flea power release About this task Flea power is the residual static electricity that remains on the computer even after it has been powered off and the battery has been removed. The following procedure provides the instructions on how to conduct flea power release: Steps 1.

  • Page 64: 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 Tips...

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