OptiPlex 3000 Thin Client Service Manual Regulatory Model: D15U Regulatory Type: D15U003 March 2022 Rev.
Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2022 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents Chapter 1: Working inside your computer...................................................................................... 5 Safety instructions.............................................................................................................................................................. 5 Before working inside your computer.......................................................................................................................5 Safety precautions.....................
Antenna Assembly..............................................................................................................................................................31 Removing the antenna (Location 1).........................................................................................................................31 Installing the antenna (Location 1)..........................................................................................................................
1 Working inside your computer Safety instructions Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that you have read the safety information that shipped with your computer. WARNING: Before working inside your computer, read the safety information that is shipped with your computer. For more safety best practices, see the Regulatory Compliance home page at www.dell.
5. Remove any media card and optical disc from your computer, if applicable. 6. After the computer is unplugged, press and hold the power button for 5 seconds to ground the system board. CAUTION: Place the computer on a flat, soft, and clean surface to avoid scratches on the display. 7. Place the computer face down. Safety precautions The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions.
● Use a wired ESD wrist strap that is properly grounded. The use of wireless anti-static straps is no longer allowed; they do not provide adequate protection. Touching the chassis before handling parts does not ensure adequate ESD protection on parts with increased sensitivity to ESD damage. ● Handle all static-sensitive components in a static-safe area. If possible, use anti-static floor pads and workbench pads.
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. Always obtain additional resources or use a mechanical lifting device. 1. 2. 3. 4. 5. Get a firm balanced footing.
2 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 Torx #5 (T5) screwdriver Plastic scribe Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box.
Major components of OptiPlex 3000 Thin Client The following image shows the major components of OptiPlex 3000 Thin Client. 1. 3. 5. 7. 9. 10 Side cover Memory module Chassis Optional module Solid-state drive heat sink Removing and installing components 2. 4. 6. 8. 10. Heat sink System board Speaker WLAN card M.
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. Follow the procedure in before working inside your computer. About this task The following images indicate the location of the side cover and provide a visual representation of the removal procedure.
Steps 1. Loosen the thumbscrew (6-32) that secures the side cover to the system. 2. Slide the side cover towards the front of the system to disengage the tabs from the slots on the system. 3. Slide and remove the side cover from the system. Installing the side cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Steps 1. Align the tabs on the side cover with the slots on the chassis.
2. Slide the side cover towards the back of the system to engage the tabs with the slots on the system. 3. Tighten the thumbscrew (6-32) to secure the side cover to the system. Next steps 1. Follow the procedure in after working inside your computer. 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 image indicates the location of the speaker and provides a visual representation of the installation procedure. Steps 1. Align and insert the speaker into the slot on the system. 2. Press the speaker into the slot on the system until the release tab clicks. 3. Route the speaker cable through the routing guides between the speaker and the chassis. 4. Connect the speaker cable to the connector on the system board. Next steps 1. Install the side cover. 2.
Steps 1. Loosen the two captive screws that secure the solid-state drive heat sink to the system. 2. Lift and remove the solid-state drive heat-sink from the system. 3. Remove the screw (M2x3.5) that secures the M.2 2230 solid-state drive to the solid-state drive slot on the system board. 4. Slide and remove the M.2 2230 solid-state drive from the M.2 card slot on the system board.
Steps 1. Align the notch on the M.2 2230 solid-state drive with the tab on the M.2 card slot on the system board. 2. Slide the M.2 2230 solid-state drive at an angle into the M.2 card slot on the system board. 3. Replace the screw (M2x3.5) to secure the M.2 2230 solid-state drive to the M.2 card slot on the system board. 4. Align the screws of the solid-state drive heat sink with the holders on the system. 5. Place the solid-state drive heat sink on the M.2 2230 solid-state drive. 6.
Steps 1. Pull the securing clips on each end of the memory-module slot 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. NOTE: Repeat step 1 to step 2 to remove any other memory modules installed in your computer. NOTE: Note the slot and the orientation of the memory module in order to replace it in the correct slot.
Steps 1. Verify if the DIMM thermal pad is warpage. If yes, then press the pad to secure it properly to the system board. 2. Remove the blue film on the DIMM thermal pad. 3. Align the notch on the memory module with the tab on the memory-module slot. 4. Press down on the memory module until the memory module snaps into position and the securing clip locks in place. NOTE: The securing clips return to the locked position. If you do not hear the click, remove the memory module and reinstall it.
Steps 1. Remove the (M2x3.5) screw that secures the WLAN-card bracket and the WLAN card on the system board. 2. Slide and remove the WLAN-card bracket from the WLAN card. 3. Disconnect the WLAN antenna cables from the connectors on the WLAN card. 4. Slide and remove the WLAN card from the WLAN-card slot on the system board. Installing the WLAN card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Steps 1. Connect the WLAN antenna cables to the connectors on 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 2. Align and place the WLAN-card bracket on the WLAN card to secure the antenna cables. 3. Align the notch on the WLAN card with the tab on the WLAN-card slot on the system board. 4.
Optional modules Removing the optional Type-C module Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. About this task The following image indicates the location of the optional Type-C module and provides a visual representation of the removal procedure. Steps 1. Remove the two (M3x3) screws that secure the Type-C module to the computer chassis. 2. Disconnect the Type-C cable from the connector on the system board. 3.
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. 2. Align and place the Type-C module into the optional I/O module slot from the inside of the computer chassis. 3. Connect the Type-C cable to the connector on the system board. 4. Connect the DP cable to the video cable connector on the system board. 5.
Steps 1. Remove the two (M3X3) screws that secure the optional HDMI module to the computer chassis. 2. Disconnect the HDMI module cable from the connector on the system board. 3. Remove the HDMI module from the system. Installing the optional HDMI module Prerequisites If you are replacing a component, remove the existing component before performing 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. 2. Connect the HDMI module cable to the connector on the system board. 3. Insert the HDMI module into the optional module slot from the inside of the computer chassis. 4. Replace the two (M3X3) screws to secure the HDMI module to the system. Next steps 1. Follow the procedure in after working inside your computer. 2.
Steps 1. Remove the two screws that secure the Serial module to the computer chassis. 2. Disconnect the Serial module cable from the connector on the system board. 3. Remove the Serial module from the system. Installing the optional Serial module Prerequisites If you are replacing a component, remove the existing component before performing 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. 2. Insert the Serial module into the optional I/O module slot from the inside of the computer chassis. 3. Connect the Serial module cable to the connector on the system board. 4. Replace the two screws to secure the Serial module to the system. Next steps 1. Install the side cover. 2.
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. About this task The following image indicates the location of the coin-cell battery and provides a visual representation of the removal procedure. Steps 1.
Steps 1. Insert the coin cell battery into the coin-cell battery slot on the system board with the "+" sign facing up. 2. Slide the coin-cell battery under the securing tabs at the positive side of the connector. 3. Press the coin-cell battery into the coin-cell battery slot until it locks into place. Results To install the mylar sheet, follow the below mentioned steps: The coin-cell battery has a black mylar for cosmetic purpose only, not function impact.
2. Follow the procedure in after working inside your computer. Heat sink Removing the heat sink Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. About this task The following image indicates the location of the heat sink and provides a visual representation of the removal procedure. Steps 1. Loosen the four captive screws that secure the heat sink to the system board.
About this task The following image indicates the location of the heat sink and provides a visual representation of the installation procedure. Steps 1. Align the screws on the heat sink with the screw holders on the system board and place the heat sink on the processor. 2. Tighten the four captive screws to secure the heat sink to the system board. NOTE: Tighten the four captive screws in ascending order (1,2,3,4) as printed on the heat sink. Next steps 1. Install the side cover. 2.
Steps 1. Unroute the black antenna-cable from the routing guides under the EMI shielding and from the cable clip. 2. Remove the screw (M3x3) that secures the internal antenna assembly to the system. 3. Lift and remove the internal antenna assembly from the system. Installing the antenna (Location 1) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Steps 1. Remove the adhesive tape from the internal antenna assembly. 2. Align the hole on the internal antenna assembly with the stand on the system. 3. Replace the screw (M3x3) to secure the internal antenna assembly to the system. 4. Route the black antenna-cable under the EMI shielding and through the cable clip with a tool. Next steps 1. Install the WLAN card. 2. Install the side cover. 3. Follow the procedure in after working inside your computer. Removing the antenna (Location 3) Prerequisites 1.
Steps 1. Remove the screw (M3x3) that secures the internal antenna assembly to the system and lift it away. 2. Unroute the white antenna-cable from cable clip and the routing guides on the system. 3. Push the internal antenna assembly inside from the opening on the back view and lift it away from the system. Installing the antenna (Location 3) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Steps 1. Remove the fillers on the side cover. 2. Loosen the screw on the internal antenna assembly. 3. Route the white antenna-cable through cable clip and the routing guides on the system. 4. Tilt the internal antenna assembly. Align and insert the antenna bracket on the system board. 5. Align the screw hole on the internal antenna assembly with the screw hole on the back view. 6. Insert the internal antenna assembly in the back view opening. 7.
Steps 1. Remove the screw (M3x3) that secures the SMA antenna assembly to the system and lift it away. 2. Push the SMA antenna assembly inside from the opening on the back view and lift it away from the system. Installing the SMA antenna assembly (Location 3) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
Steps 1. Remove the fillers on the side cover. 2. Route the white antenna-cable through cable clip and the routing guides on the system. 3. Tilt the internal antenna assembly. Align and insert the antenna bracket into the opening on the system board. 4. Rotate the antenna bracket to align the SMA antenna assembly with the screw hole on the back view. 5. Replace the screw (M3x3) to secure the SMA antenna assembly to the system. Next steps 1. Install the WLAN card. 2. Install the side cover. 3.
1. Coin-cell battery 3. Optional I/O cable connector (USB 3.2 Gen 1 Type-C port with DisplayPort Alt mode) 5. WLAN card connector 2. Optional video connector (HDMI/VGA/DP port) 4. Memory module slots 6. M.2 220 solid-state drive connector The following images indicate the location of the system board and provide a visual representation of the removal procedure.
Removing and installing components 39
Steps 1. Remove the screw (M3x5) that secures the speaker holder to the system board. 2. Lift and remove the speaker holder from the system board. 3. Remove the five (M3x5) screws and two (M3x4) screws that secure the system board to the computer chassis. 4. Lift and remove the system board from the computer chassis. Installing the system board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
1. Coin-cell battery 3. Optional I/O cable connector (USB 3.2 Gen 1 Type-C port with DisplayPort Alt mode) 5. WLAN card connector 2. Optional video connector (HDMI/VGA/DP port) 4. Memory module slots 6. M.2 220 solid-state drive connector The following images indicate the location of the system board and provide a visual representation of the installation procedure.
Removing and installing components
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. Replace the five (M3x5) screws and two (M3x4) screws to secure the system board to the computer chassis. 3. Align and place the speaker holder into the speaker holder slot on the system board. 4. Replace the screw (M3x5) to secure the speaker holder to the system board.
3 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.
4 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.
The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are: ● Removable Drive (if available) ● STXXXX Drive (if available) NOTE: XXX denotes the SATA drive number. ● Optical Drive (if available) ● SATA Hard Drive (if available) ● Diagnostics The boot sequence screen also displays the option to access the System Setup screen.
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. Devices Information Video Controller Displays the video controller type of the computer. Video Memory Displays the video memory information of the computer. Wi-Fi Device Displays the wireless device information of the computer. Native Resolution Displays the native resolution of the computer.
Table 6. System setup options—Integrated Devices menu (continued) Integrated Devices By default, all options are enabled. Rear USB ports Enable or disable the individual rear USB ports. By default, all options are enabled. Table 7. System setup options—Storage menu Storage SATA/NVMe Operation Enable or disable the operating mode of the integrated SATA hard drive controller. By default, AHCI/NVMe option is enabled. Storage Interface Port Enablement Enable or disable the onboard drives.
Table 9. System setup options—Connection menu (continued) Connection Enable UEFI Network Stack Enable or disable UEFI Network Stack and controls the on-board LAN Controller. By default, the option is enabled. HTTPs Boot Feature HTTPs Boot Enable or disable the HTTPs Boot feature. By default, the HTTPs Boot option is enabled. 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.
Table 11. System setup options—Security menu (continued) Security By default, the option is disabled. SMM Security Mitigation Enable or disable SMM Security Mitigation. By default, the option is disabled. Data Wipe on Next Boot Start Data Wipe Enable or disable the data wipe on next boot. By default, the option is disabled. Absolute Enable or disable or permanently disable the BIOS module interface of the optional Absolute Persistence Module service from Absolute software.
Table 12. System setup options—Passwords menu (continued) Passwords Enable Master Password Lockout When enabled, this will disable the master password support. 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. Table 13.
Table 14. System setup options—System Management menu (continued) System Management OS Agent Requests When enabled, Dell OS Agent(s) will be capable of scheduling onboard diagnostics on a subsequent boot which can help assist in the prevention and resolution of hardware related issues. By default, the option is enabled.
Table 17. System setup options—Virtualization Support menu (continued) Virtualization Support DMA Protection Enable Pre-Boot DMA Support Control Pre-Boot DMA protection for both internal and external ports. By default, the option is enabled. Enable OS Kernel DMA Support Controls Kernel DNA protection for both internal and external ports. By default, the option is enabled. Table 18.
2. Click Product support. In the Search support box, enter the Service Tag of your computer, and then click Search. NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer. You can also use the product ID or manually browse for your computer model. 3. Click Drivers & Downloads. Expand Find drivers. 4. Select the operating system installed on your computer. 5. In the Category drop-down list, select BIOS. 6.
You can run the BIOS update file from Windows using a bootable USB drive or you can also update the BIOS from the F12 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.
About this task To enter the system setup, press F12 immediately after a power-on or reboot. Steps 1. In the System BIOS or System Setup screen, select Security and press Enter. The Security screen is displayed. 2. Select System/Admin Password and create a password in the Enter the new password field. Use the following guidelines to assign the system password: ● A password can have up to 32 characters. ● At least one special character: ! " # $ % & ' ( ) * + , - . / : ; < = > ? @ [ \ ] ^ _ ` { | } ● Numbers
4. Replace the coin-cell battery. 5. Replace the side cover. 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.
5 Troubleshooting Dell SupportAssist Pre-boot System Performance 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.
System-diagnostic lights This section lists the system-diagnostic lights of your OptiPlex 3000 Thin Client. Table 21. System-diagnostic lights Blinking pattern Amber White Problem description Suggested resolution 1 1 TPM detection failure Replace the system board. 1 2 Unrecoverable SPI Flash Failure Replace the system board. 1 5 EC unable to program i-Fuse Replace the system board.
Table 21. System-diagnostic lights (continued) Blinking pattern Amber White Problem description Suggested resolution 3 3 BIOS Recovery image not found ● ● Flash latest BIOS version If problem persists, replace the system board. 3 4 BIOS Recovery image found but invalid ● ● Flash latest BIOS version If problem persists, replace the system board. 3 5 Power rail failure 3 6 Flash corruption detected by SBIOS. Replace the system board.
from a power-off state only if it is connected to AC power. Press and hold the power button for 25 seconds. The system RTC reset occurs after you release the power button. NOTE: If AC power is disconnected from the system during the process or the power button is held longer than 40 seconds, the RTC reset process gets aborted. The RTC reset will reset the BIOS to Defaults, un-provision Intel vPro and reset the system date and time.
6 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 Tips Contact Support In Windows search, type Contact Support, and press Enter. Online help for operating system www.dell.
