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OptiPlex 3000 Micro
Service Manual
Regulatory Model: D15U
Regulatory Type: D15U002
April 2022
Rev. A00

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Table of Contents
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Summary of Contents for Dell OptiPlex 3000 Micro

  • Page 1 OptiPlex 3000 Micro Service Manual Regulatory Model: D15U Regulatory Type: D15U002 April 2022 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2022 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, 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..........................8 BitLocker..................................8 Chapter 2: Removing and installing components................9 Recommended tools................................9 Screw list....................................9 Major components of OptiPlex 3000 Micro........................9 Side cover.....................................11 Removing the side cover.............................11 Installing the side cover.............................. 12 Front bezel...................................14 Removing the front bezel............................14 Installing the front bezel.............................15...
  • Page 4 Running the SupportAssist Pre-Boot System Performance Check..............68 Power-Supply Unit Built-in Self-Test ..........................68 System-diagnostic lights..............................69 Recovering the operating system..........................70 Real Time Clock—RTC reset............................70 Backup media and recovery options..........................71 WiFi power cycle................................71 Chapter 6: Getting help and contacting Dell................72 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. Lifting equipment Adhere to the following guidelines when lifting heavy weight equipment: CAUTION: Do not lift greater than 50 pounds.
  • Page 9: Chapter 2: Removing And Installing Components

    System board M3x5 M3x4L Heat sink M3x25 (Captive screws) WLAN card M2x3.5 M.2 2230/2280 Solid-state drive M2x3.5 Internal Antenna M3x3MM Major components of OptiPlex 3000 Micro The following image shows the major components of OptiPlex 3000 Micro. Removing and installing components...
  • Page 10 1. Side cover 2. Front bezel 3. Fan assembly 4. Heat sink 5. Speaker 6. Speaker holder 7. System board 8. Chassis Removing and installing components...
  • Page 11: Side Cover

    14. Hard-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 12: Installing The Side Cover

    Steps 1. Loosen the thumbscrew (6x32) that secures the side cover to the system. 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.
  • Page 13 Steps 1. Align the side cover with the grooves on the chassis. Removing and installing components...
  • Page 14: Front Bezel

    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. Follow the procedure in after working inside your computer. Front bezel Removing the front bezel Prerequisites 1.
  • Page 15: Installing The Front Bezel

    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. Steps 1.
  • Page 16: Solid-State Drive

    Solid-state drive Removing the M.2 2230 PCIe solid-state drive Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the hard-drive assembly. 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.
  • Page 17: 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 18: 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 19: Hard-Drive Assembly

    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 20: Removing The Hard-Drive Bracket

    Steps 1. Press the release tabs on the hard-drive assembly and slide it towards the front of the system to disconnect it from the connector on the system board. 2. Lift the hard drive assembly from the system. NOTE: Note the orientation of the hard drive so that you can replace it correctly. Removing the hard-drive bracket Prerequisites 1.
  • Page 21: Installing The Hard-Drive Bracket

    Steps 1. Pull one side of the hard-drive bracket to disengage the pins on the bracket from the slots on the drive. 2. Lift the hard-drive out of the bracket. Installing the hard-drive bracket 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 hard-drive bracket and provides a visual representation of the installation procedure.
  • Page 22: Installing The Hard-Drive Assembly

    Steps 1. Place the hard-drive into the bracket. 2. Align and insert the pins on the drive bracket with the slots on the drive. NOTE: Note the orientation of the hard-drive so that you can replace it correctly. Next steps 1.
  • Page 23: Wlan Card

    Steps 1. Insert the hard-drive assembly into the slot on the system. 2. Slide the hard-drive assembly towards the connector in the system board until the release tabs clicks into place. Next steps 1. Install the side cover. 2. Follow the procedure in after working inside your computer.
  • Page 24: 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 (M2x3.5) screw that secures the WLAN card bracket to the system board. 2. Slide and lift the WLAN card bracket away from the WLAN card. 3.
  • Page 25 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 26: Fan Assembly

    Fan assembly Removing the fan assembly Prerequisites NOTE: Based on the configuration ordered the images may slightly vary from the actual system. The images are still applicable to convey the service procedures accurately. 1. Follow the procedure in before working inside your computer.
  • Page 27: Installing The Fan Assembly

    Steps 1. Press the blue tabs on both sides of the fan, and slide to lift the fan to release it from the system. 2. Turn the fan assembly over. 3. Disconnect the fan cable from the connector on the system board. Lift the fan assembly out of the system. Installing the fan assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 28 Removing and installing components...
  • Page 29: Heat Sink

    Steps 1. Connect the fan cable to the connector on the system board. 2. Turn the fan assembly over. 3. Press the release tab on the fan assembly and place it on the system until it clicks into place. Next steps 1.
  • Page 30: Removing The Heat Sink

    Removing the heat sink Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the assembly. About this task The following images indicate the location of the heat sink and provide a visual representation of the removal procedure. Steps 1.
  • Page 31 Steps 1. Align the screws of the heat sink with the holders on the system board and place the heat sink on the processor. 2. Tighten the captive screws that secure the heat sink to the system board. NOTE: Tighten the screws in a sequential order (1,2,3) as printed on the heat sink. Next steps 1.
  • Page 32: Coin-Cell Battery

    Coin-cell battery Removing the coin-cell battery Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. NOTE: Removing the coin-cell battery resets the BIOS setup program settings to default. It is recommended that you note the BIOS setup program settings before removing the coin-cell battery.
  • Page 33: 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 34: 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. 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 35: Optional I/O Modules (Type C/Hdmi/Vga/Dp/Serial)

    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 36: Installing Optional I/O Modules (Hdmi/Vga/Dp/Serial)

    Steps 1. Remove the two (M3x3) screws that secure the optional I/O modules or two (M2x5) cross type screws that secure the serial module to the computer chassis. 2. Disconnect the I/O-module cable from the connector on the system board. 3.
  • Page 37 About this task The following images indicate the location of the system board and provide a visual representation of the installation procedure. Steps 1. To remove the dummy metal bracket, insert a flat-head screwdriver in the hole of the bracket. Push the bracket to release the bracket, and then lift the bracket out from the system.
  • Page 38: Speaker

    Speaker Removing the speaker 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 speaker and provide a visual representation of the removal procedure. Steps 1.
  • Page 39: 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 side cover. 2. Follow the procedure in after working inside your computer.
  • Page 40: 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 41 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 42: Internal Antenna

    Internal Antenna Removing internal antenna (Location 1) Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the WLAN card. About this task The following images indicate the location of an internal antenna and provide a visual representation of the removal procedure. Steps 1.
  • Page 43: Removing Internal Antenna (Location 3)

    Steps 1. Remove the adhesive tape from the internal antenna assembly. 2. Remove the adhesive tape from the chassis. 3. Align the internal antenna assembly to the chassis. 4. Replace the screw (M3x3MM) that secures the internal antenna assembly to the chassis. 5.
  • Page 44: Installing Internal Antenna (Location 3)

    Steps 1. Remove the screw (M3x3MM) that secures the internal antenna assembly to the chassis. 2. Remove the captive screw that secures the internal antenna cover to the chassis and lift it away. 3. Push the internal antenna assembly inside from the opening on the back view and lift it away from the chassis. Installing internal antenna (Location 3) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 45: Removing Sma Antenna (Location 3)

    Steps 1. Remove the fillers on the side cover. 2. Tilt the internal antenna assembly. Align and place the antenna bracket on the system board. 3. Insert the internal antenna assembly in the back view opening. 4. Align the screw hole on the internal antenna assembly with the screw hole on the back view. 5.
  • Page 46: Installing Sma Antenna (Location 3)

    Steps 1. Remove the screw (M3x3MM) that secures the internal antenna assembly to the chassis. 2. Push the SMA antenna assembly inside from the opening on the back view and lift it away from the chassis. Installing SMA antenna (Location 3) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 47: System Board

    Steps 1. Remove the fillers on the side cover. 2. Tilt the SMA antenna assembly. Align and place the antenna bracket on the system board. 3. Insert the SMA antenna assembly in the back view opening. 4. Align the screw hole on the SMA antenna assembly with the screw hole on the back view. 5.
  • Page 48 About this task The following images indicate the location of the system board and provide a visual representation of the removal procedure. 1. M.2 WLAN connector 2. M.2 SSD PCIe connector (2230/2280) 3. Coin-cell battery 4. Optional video connector (VGA Port/DisplayPort 1.4a (HBR3)/HDMI 2.0b Port) 5.
  • Page 49 Removing and installing components...
  • Page 50: Installing The System Board

    Steps 1. Remove the screw (M3x5) that secures the speaker support to the system board. 2. Lift the speaker support away from the system board. 3. Remove the five (M3x5) screws and two (M3x4L) screws that secure the system board to the chassis. 4.
  • Page 51 Removing and installing components...
  • Page 52 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 53: 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 54: 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 55: System Setup Options

    Depending on your computer and its installed devices, the items that are listed in this section may or may not appear. Table 4. System setup options—System information menu Overview OptiPlex 3000 Micro BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the computer.
  • Page 56 Table 4. System setup options—System information menu (continued) Overview DIMM 1 Size Displays the DIMM 1 memory size. DIMM 2 Size Displays the DIMM 2 memory size. DIMM 3 Size Displays the DIMM 3 memory size. DIMM 4 Size Displays the DIMM 4 memory size. Devices Information Video Controller Displays the video controller type of the computer.
  • Page 57 Table 6. System setup options—Integrated Devices menu (continued) Integrated Devices Audio Enable Audio Enable or disable the integrated audio controller. By default, all the options are enabled. Serial Port Serial Port Configuration Enable or disable the serial port address. By default, the COM1: Port is configured at 3F8h with IRQ4 option is enabled.
  • Page 58 Table 7. System setup options—Storage menu (continued) Storage Type Displays the SATA HDD type information of the computer. Device Displays the SATA HDD device information of the computer. M.2 PCIe SSD-0 Type Displays the M.2 PCIe SSD-0 type information of the computer. Device Displays the M.2 PCIe SSD-0 device information of the computer.
  • Page 59 Table 9. System setup options—Connection menu (continued) Connection HTTPs Boot Mode With Auto Mode, the HTTPs Boot extracts Boot URL from the DHCP. With Manual Mode, the HTTPs Boot reads Boot URL from the user-provided data. By default, the Auto Mode option is enabled. Table 10.
  • Page 60 Table 11. System setup options—Security menu (continued) Security By default, the SHA-256 option is enabled. Clear Enables to clear the TPM owner information and returns the TPM to the default state. By default, the Clear option is disabled. PPI ByPass for Clear Commands Controls the TPM Physical Presence Interface (PPI).
  • Page 61 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. Table 13. System setup options—Update, Recovery menu...
  • Page 62 Table 14. System setup options—System Management menu (continued) System Management Wake on LAN/WLAN Enable or disable the computer to power on by special LAN signals when it receives a wakeup signal from the WLAN. By default, the Disabled option is selected. Auto on Time Enable to set the computer to turn on automatically every day or on a preselected date and time.
  • Page 63 Table 17. System setup options—Virtualization menu Virtualization Intel Virtualization Technology Enable Intel Virtualization Technology Specify whether a Virtual Machine Monitor (VMM) can utilize the additional (VT) hardware capabilities that are provided by Intel Virtualization Technology. By default, the option is enabled. VT for Direct I/O Specify whether a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities that are provided by Intel Virtualization Technology for...
  • Page 64: Updating The Bios

    Updating the BIOS in Windows to download the latest BIOS setup program file. 2. Create a bootable USB drive. For more information, search in the Knowledge Base Resource at www.dell.com/support. 3. Copy the BIOS setup program file to the bootable USB drive.
  • Page 65: Updating The Bios From The F12 One-Time Boot Menu

    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 66: Assigning A System Setup Password

    CAUTION: The password features provide a basic level of security for the data on your computer. CAUTION: Anyone can access the data that is stored on your computer if it is not locked and left unattended. NOTE: System and setup password feature is disabled. Assigning a system setup password Prerequisites You can assign a new System or Admin Password only when the status is in Not Set.
  • Page 67: 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 68: 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 69: System-Diagnostic Lights

    System-diagnostic lights This section lists the system-diagnostic lights of your OptiPlex 3000 Micro. Table 21. System-diagnostic lights Blinking pattern Amber White Problem description Suggested resolution TPM detection failure Replace the system board. Unrecoverable SPI Flash Replace the system board. Failure EC unable to program i-Fuse Replace the system board.
  • Page 70: 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 71: Backup Media And Recovery Options

    Backup media and recovery options It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes multiple options for recovering Windows operating system on your Dell PC. For more information. see...
  • Page 72: 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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