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Dell Precision 5860 Tower Service Manual

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Precision 5860 Tower
Service Manual
Regulatory Model: D03T
Regulatory Type: D03T001
March 2023
Rev. A00

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Summary of Contents for Dell Precision 5860 Tower

  • Page 1 Precision 5860 Tower Service Manual Regulatory Model: D03T Regulatory Type: D03T001 March 2023 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2023 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........................10 BitLocker..................................10 Chapter 2: Removing and installing components................11 Recommended tools................................11 Screw list....................................11 Major components of Precision 5860 Tower......................12 Side cover.................................... 14 Removing the side cover............................14 Installing the side cover.............................. 15 Front bezel ..................................17 Removing the front bezel............................17...
  • Page 4 Removing the PCIe holder............................35 Installing the PCIe holder............................36 Front fan....................................37 Removing the front-fan assembly........................... 37 Removing front fan..............................38 Installing the front fan..............................39 Installing the front-fan assembly..........................39 3.5-inch hard-drive assembly............................40 Removing the 3.5-inch hard-drive assembly......................40 Removing the 3.5-inch hard-drive bracket......................41 Installing the 3.5-inch hard-drive bracket......................
  • Page 5 Removing the UltraSpeed Duo card........................72 Installing the UltraSpeed Duo card..........................73 Removing the UltraSpeed Quad card........................74 Installing the UltraSpeed Quad card........................74 Removing the Thunderbolt PCIe card........................75 Installing the Thunderbolt PCIe card........................76 Removing the wireless card............................77 Installing the wireless card............................79 Speaker....................................
  • Page 6 Deleting or changing an existing system setup password................133 Clearing BIOS (System Setup) and System passwords..................133 Chapter 5: Troubleshooting....................... 134 Dell SupportAssist Pre-boot System Performance Check diagnostics.............. 134 Running the SupportAssist Pre-Boot System Performance Check.............. 134 Power-Supply Unit Built-in Self-Test ........................134 System-diagnostic lights..............................134...

  • Page 7: 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 8: 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 9: Esd Field Service Kit

    Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag. ● 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. Working inside your computer...

  • Page 10: 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.

  • Page 11: 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 12: Major Components Of Precision 5860 Tower

    Captive Intrusion switch Solid-state drive heatsink Captive Power-supply unit #6-32 Voltage-Regulator heatsink - Captive Location 2 System board #6-32 Major components of Precision 5860 Tower The following image shows the major components of Precision 5860 Tower. Removing and installing components...
  • Page 13 25. Air shroud 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 14: Side Cover

    Side cover Removing the side cover Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Ensure that you remove the security cable from the security-cable slot (if applicable). About this task The following images indicate the location of the side cover and provide a visual representation of the removal procedure. Removing and installing components...

  • Page 15: Installing The Side Cover

    Steps 1. Insert the side-cover key and turn the key counter-clockwise to unlock the side cover. 2. Push the latch and release the side cover from the computer. 3. Open the side cover at an angle and lift the cover away from the chassis. Installing the side cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 16 About this task The following images indicate the location of the side cover and provide a visual representation of the installation procedure. Steps 1. Align the tabs on the side cover with the slots on the chassis. 2. Press the side cover back towards the side of the computer to secure it. NOTE: The release latch automatically locks the side cover to the computer.

  • Page 17: Front Bezel

    Next steps 1. Follow the procedure in After working inside your computer. 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 18: I/O Board

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

  • Page 19: Installing The Front I/O Bracket

    Steps 1. Loosen the thumb screw on the front I/O bracket and unscrew it until the front I/O bracket is free to move. 2. Move the top end of the front I/O bracket at an angle to free it from its slot on the chassis. 3.

  • Page 20: External Storage Flexbay (Hard Drive)

    External storage flexbay (Hard drive) Removing the hard-drive assembly Prerequisites 1. Follow the procedure in Before working inside your computer. About this task The following images indicate the location of the hard-drive assembly and provide a visual representation of the removal procedure.

  • Page 21: Removing A 3.5-Inch Hard-Drive From A Hard-Drive Assembly

    Steps 1. Slide and insert the hard-drive assembly into the external flexbay slot. 2. Close the release latch to secure the hard-drive assembly in place. Next steps 1. Follow the procedure in After working inside your computer. Removing a 3.5-inch hard-drive from a hard-drive assembly Prerequisites 1.

  • Page 22: Installing A 3.5-Inch Hard-Drive From Hard-Drive Assembly

    Steps 1. Pry the sides of the external hard-drive bracket to release the pins on the bracket from the slots on the hard drive. 2. Lift and remove the hard drive off the external hard-drive bracket. Installing a 3.5-inch hard-drive from hard-drive assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 23: Removing A 2.5-Inch Hard-Disk Drive From A Hard-Drive Assembly

    Steps 1. Place the hard drive into the external hard-drive bracket and align the pins on the bracket with the slots on the hard drive. 2. Snap the hard-drive into the external hard-drive bracket. Next steps 1. Install the hard-drive assembly.

  • Page 24: Installing A 2.5-Inch Hard-Drive From A Hard-Drive Assembly

    Steps 1. Pry the sides of the external hard-drive bracket to release the pins on the bracket from the slots on the hard drive. 2. Lift and remove the hard drive off the external hard-drive bracket. Installing a 2.5-inch hard-drive from a hard-drive assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 25: External Storage Flexbay (Solid-State Drive)

    Steps NOTE: 2.5 inch hard-drives are to be installed in hard-drive assemblies with an adapter installed to fit 2.5 inch hard- drives. Place the hard drive into the external hard-drive bracket and align the pins on the bracket with the slots on the hard drive. 2.

  • Page 26: Removing The External M.2 2230 Solid-State Drive

    Steps 1. Push the release button on the external-flexbay bracket to open the release latch. 2. Hold the release latch and slide the solid-state drive assembly out of the external flexbay slot. Removing the external M.2 2230 solid-state drive Prerequisites 1.

  • Page 27: Installing The External M.2 2230 Solid-State Drive

    Steps 1. Remove the single (M3x6) screw and the two (M3x3) screws from the solid-state drive assembly. 2. Lift and remove the cover from the solid-state drive assembly. 3. Slide and remove the solid-state drive holder from the solid-state drive assembly. 4.

  • Page 28: Removing The External M.2 2280 Solid-State Drive

    Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector. 2. Insert the solid-state drive at a 45-degree angle into the slot on the solid-state drive assembly. 3. Align and place the solid-state drive bracket onto the solid-state drive assembly. 4.

  • Page 29: Installing The External M.2 2280 Solid-State Drive

    Steps 1. Remove the single (M3x6) screw and the two (M3x3) screws from the solid-state drive assembly. 2. Lift and remove the cover from the solid-state drive assembly. 3. Slide and remove the solid-state drive from the solid-state drive assembly. Installing the external M.2 2280 solid-state drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 30: Installing The External Solid-State Drive Assembly

    Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector. 2. Insert the solid-state drive at a 45-degree angle into the slot on the solid-state drive assembly. 3. Place the cover over the solid-state drive assembly. 4.

  • Page 31: Slim Optical-Drive

    Steps 1. Slide and insert the solid-state drive assembly into the external flexbay slot. 2. Push and close the release latch to secure the solid-state drive assembly in place. Next steps 1. Follow the procedure in After working inside your computer.

  • Page 32: Installing The Slim Optical-Drive

    Steps 1. Push the slim optical-drive latch to release it from the flexbay. 2. Slide and remove the slim optical-drive from the slot on the flexbay. 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 images indicate the location of the slim optical-drive and provide a visual representation of the installation procedure.

  • Page 33: Air Shroud

    Steps 1. Insert the slim optical-drive into the slot in the flexbay. 2. Push the slim optical-drive until it snaps into place. Next steps 1. Install the side cover. 2. Follow the procedure in After working inside your computer. Air shroud Removing the air shroud Prerequisites 1.

  • Page 34: Installing The Air Shroud

    Steps 1. Hold the air shroud at the gripping points. 2. Pull the air shroud upwards and out of the computer. Installing the air shroud 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 air shroud and provides a visual representation of the installation procedure.

  • Page 35: Pcie Holder

    Steps 1. Align the air shroud over the heat-sink and system board holding and seat it in the slot. 2. Press the air shroud down until the tabs click into place. Next steps 1. Install the side cover. 2. Follow the procedure in After working inside your computer.

  • Page 36: Installing The Pcie Holder

    About this task The following images indicate the location of the PCIe holder and provide a visual representation of the removal procedure. Steps 1. Remove the PCIe-power cables from the slots on the PCIe holder. 2. Push the PCIe holder lock into the unlock position. 3.

  • Page 37: Front Fan

    Steps 1. Align and place the PCIe holder on the slot over the front fan. 2. Push the PCIe holder lock into the lock position to secure the PCIe holder to the chassis. 3. Reconnect the PCIe-power cables to the slots on the PCIe holder. Next steps 1.

  • Page 38: Removing Front Fan

    About this task The following images indicate the location of the front-fan assembly and provide a visual representation of the removal procedure. Steps 1. Remove the single (M3x5) screw from the fan assembly. 2. Disconnect the fan cable from the connector on the system board. 3.

  • Page 39: Installing The Front Fan

    Steps 1. Locate the position of rubber grommets. 2. Gently pull the rubber grommets to release the fan from the fan cage. 3. Remove the fan from the fan cage. Installing the front fan 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 front fan and provide a visual representation of the installation procedure.

  • Page 40: 3.5-Inch Hard-Drive Assembly

    Steps 1. Align the tabs on the fan assembly with the slots on the chassis. 2. Insert the fan assembly at an angle into the slot in the chassis. 3. Install the single (M3x5) screw to secure the fan assembly to the chassis. 4.

  • Page 41: Removing The 3.5-Inch Hard-Drive Bracket

    Steps 1. Press the securing tabs to release the hard-drive assembly from the chassis. 2. Slide the hard-disk drive assembly out of the hard-drive bracket. Removing the 3.5-inch hard-drive bracket Prerequisites 1. Follow the procedure in before working inside your computer.

  • Page 42: Installing The 3.5-Inch Hard-Drive Bracket

    Steps 1. Pry the sides of the hard-drive bracket to release the tabs on the bracket from the slots on the hard drive. 2. Lift and remove the hard drive off the hard-drive bracket. Installing the 3.5-inch hard-drive bracket Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 43: Installing The 3.5-Inch Hard-Drive Assembly

    Steps NOTE: If your hard-drive bracket is installed with an adapter for 2.5-inch drives, remove the adapter before installing a 3.5-inch drive. Place the hard drive into the hard-drive bracket and align the tabs on the bracket with the slots on the hard drive. 2.
  • Page 44 Steps Slide and insert the 3.5-inch hard-drive assembly into the slot on the hard-drive bracket. NOTE: Push the hard-drive assembly into the slot until you hear a 'click' sound, which indicates that the assembly is locked into position. Next steps 1.

  • Page 45: 2.5-Inch Hard-Drive Assembly

    2.5-inch hard-drive assembly Removing the 2.5-inch hard-drive assembly 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 2.5-inch hard-drive assembly and provide a visual representation of the removal procedure.

  • Page 46: Removing The 2.5-Inch Hard-Disk Drive Bracket

    2. Slide the hard-disk drive assembly out of the hard-drive bracket. Removing the 2.5-inch hard-disk drive bracket Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the 2.5-inch hard-drive assembly. About this task The following images indicate the location of the 2.5-inch hard-drive bracket and provide a visual representation of the removal procedure.

  • Page 47: Installing The 2.5-Inch Hard-Drive Assembly

    Steps 1. Place the hard drive into the hard-drive bracket and align the tabs on the bracket with the slots on the hard drive. 2. Snap the hard-drive into the hard-drive bracket. Next steps 1. Install the 2.5-inch hard-drive assembly. 2.

  • Page 48: Hard-Drive Fan Assembly

    Steps Slide and insert the hard-drive assembly into the slot on the hard-drive bracket. Next steps 1. Install the side cover. 2. Follow the procedure in After working inside your computer. Hard-drive fan assembly Removing the hard-drive fan assembly Prerequisites 1.

  • Page 49: Installing The Hard-Drive Fan Assembly

    2. Remove the side cover. 3. Remove the shroud. About this task The following images indicate the location of the hard-drive fan assembly and provide a visual representation of the removal procedure. Steps 1. Disconnect the SATA power-cable, thermal-sensor cable, PCIe cable and the fan-controller cable from the connectors on the system board.
  • Page 50 About this task The following images indicate the location of the hard-drive fan assembly and provide a visual representation of the installation procedure. Steps 1. Align the tabs on the hard-drive fan assembly with the slots on the chassis. 2. Place the hard-drive fan assembly into the slot in the chassis. 3.

  • Page 51: Bottom Air-Shroud

    Bottom air-shroud Removing the bottom air-shroud Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the shroud. About this task The following image indicates the location of the air shroud and provides a visual representation of the removal procedure. Steps 1.

  • Page 52: Internal Hard-Drive Cage

    Steps 1. Align the bottom air-shroud with the slot on the system board. 2. Replace the two (M3x5) screws that secures the bottom air-shroud to the system board. 3. Connect the cables to the front chassis. 4. Route the cables through the routing guides on the system board. 5.

  • Page 53: Installing The Internal Hard-Drive Cage

    Steps 1. Disconnect the SATA power-cables and SATA data-cables from the connectors on the system board. 2. Remove the five (#6-32) screws from the hard-drive cage. 3. Slide and remove the hard-drive cage out of the computer. Installing the internal hard-drive cage Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 54: Rear Fans

    Steps 1. Slide and insert the hard-drive cage into the slot on the chassis. 2. Install the four (#6-32) screws to secure the hard-drive cage to the chassis. 3. Connect the SATA power-cables and SATA data-cables to the connectors on the system board. Next steps 1.

  • Page 55: Removing Rear Fan

    Steps 1. Remove the two (#6-32) screws from the fan assembly. 2. Move the fan assembly at an angle from the chassis. 3. Disconnect the two fan cables from the connectors on the system board. 4. Lift and remove the fan assembly from the computer. Removing rear fan Prerequisites 1.

  • Page 56: Installing The Rear Fan

    Steps 1. Remove the fan cable from the routing guide on the fan assembly. 2. Locate the position of rubber grommets. 3. Gently pull the rubber grommets inwards to release the fan from the fan cage. 4. Remove the fan from the fan cage. NOTE: Follow the same steps for the second fan.

  • Page 57: Installing The Rear-Fan Assembly

    Steps 1. Route the fan cable through the slot on the fan cage. 2. Place the fan inside the fan cage. 3. Insert the rubber grommets on the fan cage. 4. Align the slots on the fan with the rubber grommets on the fan cage. 5.

  • Page 58: Memory Modules

    Steps 1. Align the tabs on the fan assembly with the slots on the chassis. 2. Insert the fan assembly at an angle into the slot in the chassis. 3. Install the two (#6-32) screws to secure the fan assembly to the chassis. 4.

  • Page 59: Installing The Memory Module

    About this task The following image indicates the location of the memory module and provide a visual representation of the removal procedure. Steps 1. Pull the securing clips from both side of the memory module until the memory module pops up. 2.

  • Page 60: M.2 Solid-State Drive

    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 61: Installing The M.2 2230 Pcie Solid-State Drive

    Steps 1. Loosen the four captive screws that secures the M.2 heat-sink to the system board. 2. Lift and remove the M.2 heat-sink from the computer. 3. Remove the single (M2x3.5) screw that secures the solid-state drive to the system board. 4.

  • Page 62: 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. 2. Insert the solid-state drive at a 45-degree angle into the slot on the system board. NOTE: When replacing a M.2 2280 solid-state drive from a M.2 2230 solid-state drive, ensure to move the standoff nut to the M.2 2230 solid-state drive slot position.

  • Page 63: Installing The M.2 2280 Pcie Solid-State Drive

    Steps 1. Loosen the four captive screws that secures the M.2 heat-sink to the system board. 2. Lift and remove the M.2 heat-sink from the computer. 3. Remove the single (M2x3.5) screw that secures the solid-state drive to the system board. 4.

  • Page 64: Heat Sink

    Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector. 2. Insert the solid-state drive at a 45-degree angle into the slot on the system board. NOTE: When replacing a M.2 2280 solid-state drive to a M.2 2230 solid-state drive, ensure to move the standoff nut to the M.2 2230 solid-state drive slot position.

  • Page 65: Installing The Heat-Sink Assembly

    About this task The following images indicate the location of the heat-sink assembly and provide a visual representation of the removal procedure. The image of the heat-sink assembly may vary depending on the configuration ordered. Steps 1. Using a Torx T30screwdriver, in reverse sequential order (4->3->2->1), loosen the four captive screws that secure the heat-sink assembly to the system board.

  • Page 66: Processor

    Steps 1. Align the screws on the processor fan and heat-sink assembly with the screw holders on the system board and place the processor fan and heat-sink assembly on the processor. 2. In sequential order (1->2->3->4), tighten the captive screws to secure the processor fan and heat-sink assembly to the system board.

  • Page 67: Installing The Processor

    Steps 1. Slide outwards and release the lever from the securing clips on the CPU carrier. 2. Pull the securing clips on the CPU carrier and release the processor. 3. Gently slide the processor out of the CPU carrier. Installing the processor Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 68: Expansion Card

    2. At an angle, slide the processor on the CPU carrier. 3. Push the processor gently and lock the processor to the securing clips on the CPU carrier. Next steps 1. Install the heat-sink assembly. 2. Install the side cover. 3.

  • Page 69: Installing The Powered Graphics-Card

    Steps 1. Disconnect the PCIe-power cable from the connector on the graphics card. 2. Remove the PCIe-power cables from the PCIe holder. 3. Push the PCIe latch to open the PCIe door. 4. Push the PCIe-holder latch upwards to release the PCIe-card bracket. 5.
  • Page 70 About this task The following images indicate the location of the powered graphics-card and provide a visual representation of the installation procedure. Steps 1. Align the powered graphics card with the PCIe slot on the system board. 2. Using the alignment post, push the graphic card connector firmly into the PCIe slot. Ensure that the graphics card is firmly seated.

  • Page 71: Removing The Non-Powered Graphics Card

    3. Follow the procedure in After working inside your computer. Removing the non-powered graphics card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the shroud. About this task The following images indicate the location of the non-powered graphics card and provide a visual representation of the removal procedure.

  • Page 72: Removing The Ultraspeed Duo Card

    Steps 1. Align the graphics card with the PCIe slot on the system board. 2. Using the alignment post, push the graphic card connector firmly into the PCIe slot. Ensure that the graphics card is firmly seated. 3. Close the PCIe door, locking it into position. Next steps 1.

  • Page 73: Installing The Ultraspeed Duo Card

    Steps 1. Push the PCIe latch to open the PCIe door. 2. Lift and remove the UltraSpeed Duo card away from the expansion-card slot. Installing the UltraSpeed Duo card 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 UltraSpeed Duo card and provide a visual representation of the installation procedure.

  • Page 74: Removing The Ultraspeed Quad Card

    Steps 1. Align the UltraSpeed Duo card with the expansion-card slot on the system board. 2. Using the alignment post, connect the UltraSpeed Duo card to the connector and press down firmly. Ensure that the UltraSpeed Duo card is firmly seated. 3.

  • Page 75: Removing The Thunderbolt Pcie Card

    About this task The following images indicate the location of the UltraSpeed Quad card and provide a visual representation of the installation procedure. Steps 1. Align the UltraSpeed Quad card with the expansion-card slot on the system board. 2. Using the alignment post, connect the UltraSpeed Quad card to the connector and press down firmly. Ensure that the UltraSpeed Quad card is firmly seated.

  • Page 76: Installing The Thunderbolt Pcie Card

    Steps 1. Disconnect the Thunderbolt PCIe cable from the connector on the system. 2. Remove the Thunderbolt PCIe cable from the routing guide on the chassis. 3. Push the PCIe latch to open the PCIe door. 4. Lift and remove the Thunderbolt PCIe card away from the expansion-card slot. Installing the Thunderbolt PCIe card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 77: Removing The Wireless Card

    Steps 1. Align the Thunderbolt PCIe card with the expansion-card slot on the system board. 2. Using the alignment post, connect the Thunderbolt PCIe card to the connector and press down firmly. Ensure that the Thunderbolt PCIe card is firmly seated. 3.
  • Page 78 About this task The following images indicate the location of the wireless card and provide a visual representation of the removal procedure. Removing and installing components...

  • Page 79: Installing The Wireless Card

    Steps 1. Loosen the captive screw on the external-antenna cover. 2. Remove the external-antenna cover from over the antenna connectors on the PCIe-riser card. 3. Loosen the bolts on the external-antenna cable connector. 4. Disconnect the PCIe-riser card cable from the connector on the system board. 5.
  • Page 80 Removing and installing components...
  • Page 81 Steps 1. Align the notch on the WLAN card with the tab on the PCIe riser-card. 2. Slide the WLAN card at an angle into the PCIe riser-card. 3. Install the single (M2x3) screw to secure the WLAN card to the PCIe-riser card. 4.

  • Page 82: Speaker

    Speaker Removing the speaker Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the side cover. 3. Remove the front bezel. 4. Remove the shroud. About this task The following images indicate the location of the speaker and provide a visual representation of the removal procedure. Steps 1.

  • Page 83: Intrusion Switch

    Steps 1. Press the tabs on the speaker and push the speaker in to the slot on the chassis until it snaps into place. 2. Route the speaker cable through the routing guide on the chassis. 3. Route the speaker cable through the slot on the chassis. 4.

  • Page 84: Installing The Intrusion Switch

    Steps 1. Disconnect the intrusion-switch cable from the connector on the system board. 2. Remove the cable from the routing point on the system board. 3. Remove the single (M3) screw to remove the intrusion switch and cable from the computer. Installing the intrusion switch Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 85: Voltage-Regulator Heat Sink

    Steps 1. Insert the intrusion switch into its slot in the chassis and secure it into place with the single (M3) screw. 2. Route the intruder cable through the routing guides on the system board. 3. Connect the intrusion-switch cable to the connector on the system board. Next steps 1.

  • Page 86: Installing The Voltage-Regulator Heat Sink - Location 1

    Installing the voltage-regulator heat sink - Location 1 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 voltage-regulator heat sink and provides a visual representation of the installation procedure.

  • Page 87: Installing The Voltage-Regulator Heat Sink - Location 2

    About this task The following image indicates the location of the voltage-regulator heat sink and provides a visual representation of the removal procedure. Steps 1. Loosen the two captive screws that secure the voltage-regulator heat sink to the system board. 2.

  • Page 88: Removing The Voltage-Regulator Heat Sink - Location 3

    Steps 1. Align the screw holes on the voltage-regulator heat sink to the screw holes on the system board and adhere the voltage- regulator heat sink to the system board. 2. Tighten the two captive screws that secure the voltage-regulator heat sink to the system board. Next steps 1.

  • Page 89: Installing The Voltage-Regulator Heat Sink - Location 3

    Steps 1. Remove the three (M3x5) screws that secure the voltage-regulator heat sink to the system board. 2. Lift the heat sink off the system board. Installing the voltage-regulator heat sink - Location 3 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 voltage-regulator heat sink and provides a visual representation of the installation procedure.

  • Page 90: Power-Supply Unit

    Steps 1. Align the screw holes on the voltage-regulator heat sink to the screw holes on the system board and adhere the voltage- regulator heat sink to the system board. 2. Replace the three (M3x5) screws to secure the voltage-regulator heat sink to the system board. Next steps 1.
  • Page 91 Removing and installing components...
  • Page 92 Removing and installing components...

  • Page 93: Installing The Power-Supply Unit

    Steps 1. Lay the computer on the right side. 2. Disconnect the ATX CPU power-cables from the connectors on the system board. 3. Open the clips on the routing guides on the power-supply cover and remove the CPU ATX power-cables from the clips. 4.
  • Page 94 Removing and installing components...
  • Page 95 Removing and installing components...
  • Page 96 Steps 1. Slide the power-supply unit into the chassis until the securing tab snaps into position. 2. Replace the four (#6x32) screws to secure the power-supply unit to the chassis. 3. Route the PCIe power-cables and SATA power-cables through the bottom-air shroud. 4.

  • Page 97: System Board

    System board System-board call outs This topics provides detailed call outs for the connectors on the system board: System-board call outs Table 2. Precision 5860 tower system board callouts Connector Description ATX CPU1 4-pin processor power connector ATX CPU2 4-pin processor power connector...

  • Page 98: Removing The System Board

    Table 2. Precision 5860 tower system board callouts (continued) Connector Description SATA PWR1 SATA power connector SATA-0 Primary SATA Hard drive data cable connector ATX SYS System-board power connector SATA PWR2 SATA power connector INT SPKR Internal-speaker connector INT USB2 USB 3.2 Gen1 port to accommodate...
  • Page 99 NOTE: Replacing the system board removes any changes that you have made to the BIOS using the BIOS setup program. You must make the appropriate changes again after you replace the system board. NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can reconnect the cables correctly after you replace the system board.
  • Page 100 Removing and installing components...

  • Page 101: Installing The System Board

    Steps 1. Remove the two (M3) screws that secure the supporting bracket to the system board. 2. Remove the eleven (#6-32) screws that secure the system board to the chassis. 3. Lift the system board at an angle and remove the system board off the chassis. Installing the system board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 102 Removing and installing components...
  • Page 103 Steps 1. Slide the front I/O-ports on the system board into the front I/O-slots on the chassis and align the screw holes on the system board with the screw holes on the chassis. 2. Replace the eleven (#6-32) screws that secure the system board to the chassis. 3.

  • Page 104: Rail Kit

    8. Install the hard-drive fan assembly. 9. Install the M.2 2230 SSD/M.2 2280 SSD. 10. Install the memory module. 11. Install the 3.5-inch hard drive/2.5-inch hard drive. 12. Install the PCIe holder. 13. Install the shroud. 14. Install the front I/O bracket.
  • Page 105 Removing and installing components...
  • Page 106 Removing and installing components...

  • Page 107: Installing The Right Rail-Kit

    Steps 1. Remove the four screws (M6x32) that secure the right rail-kit to the chassis. 2. Slide and remove the rail-kit from the slots on the chassis. 3. Replace the four screws (M6x32) to the rail-kit. Installing the right rail-kit Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 108 Removing and installing components...
  • Page 109 Removing and installing components...

  • Page 110: Removing The Left Rail-Kit

    Steps 1. Remove the four screws (M6x32) from the rail-kit. 2. Align the right rail-kit with the slots on the chassis and slide to secure it in place. 3. Replace the four screws (M6x32) to secure the right rail-kit to the chassis Next steps 1.
  • Page 111 About this task The following images indicate the location of the left rail-kit and provide a visual representation of the removal procedure. Removing and installing components...
  • Page 112 Removing and installing components...

  • Page 113: Installing The Left Rail-Kit

    Steps 1. Remove the six screws (M6x32) that secure the left rail-kit to the chassis. 2. Remove the rail-kit from the chassis. 3. Replace the four screws (M6x32) to the rail-kit. Installing the left rail-kit 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 left rail-kit and provide a visual representation of the installation procedure.
  • Page 114 Removing and installing components...
  • Page 115 Removing and installing components...
  • Page 116 Steps 1. Remove the six screws (M6x32) from the rail-kit. 2. Align the screw holes on the left rail-kit with the screw holes on the chassis. 3. Replace the six screws (M6x32) to secure the left rail-kit to the chassis Next steps 1.

  • Page 117: Chapter 3: Drivers And Downloads

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

  • Page 118: 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 119: One Time Boot Menu

    Depending on your system 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 Precision 5860 Tower BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the system.
  • Page 120 Table 4. System setup options—System information menu (continued) Overview Core Count Displays the number of cores on the processor. Processor ID Displays the processor identification code. Processor L2 Cache Displays the processor L2 Cache size. Processor L3 Cache Displays the processor L3 Cache size. Microcode Version Displays the microcode version.
  • Page 121 Table 4. System setup options—System information menu (continued) Overview Slot 5 Displays the PCI slot information of the system. Slot 6 Displays the PCI slot information of the system. Slot 7 Displays the PCI slot information of the system. Slot 8 Displays the PCI slot information of the system.
  • Page 122 Table 6. System setup options—Integrated Devices menu (continued) Integrated Devices By default, the Default option is enabled. Table 7. System setup options—Storage menu Storage SATA/NVMe Operation SATA/NVMe Operation Set the operating mode of the integrated storage device controller. By default, the RAID On option is enabled. Storage interface Port Enablement This page allows you to enable the onboard drives.
  • Page 123 Table 7. System setup options—Storage menu (continued) Storage Type Displays the slimline SAS PCIE SSD-1 type information of the system. Device Displays the slimline SAS PCIE SSD-1 device information of the system. Slimline SAS PCIE SSD-2 Type Displays the slimline SAS PCIE SSD-2 type information of the system. Device Displays the slimline SAS PCIE SSD-2 device information of the system.
  • Page 124 Table 9. System setup options—Connection menu (continued) Connection Integrated NIC 2 Enable or disable the on-board LAN controller. By default, the Enabledoption is enabled. Enable UEFI Network Stack Enable or disable UEFI Network Stack and controls the on-board LAN Controller. By default, the Auto Enabled option is enabled.
  • Page 125 Table 10. System setup options—Power menu (continued) Power Block Sleep Enables to block entering sleep (S3) mode in the operating system. By default, the Block Sleep option is disabled. Deep Sleep Control Deep Sleep Control option is disabled in order to enable the Wake from USB keyboard and mouse feature to work in the shutdown (S5) and Hibernate (S4) states.
  • Page 126 By default, the option is enabled. Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell operating system Recovery Tool. By default, the threshold value is set to 2. Table 13. System setup options—System Management menu...
  • Page 127 Table 13. System setup options—System Management menu (continued) System Management Asset Tag Create a system Asset Tag. Wake on LAN/WLAN 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 option is disabled.
  • Page 128 Enables to change the number of CPU cores available to the operating system. By default, the All Cores options is enabled. Enable Dell RMT Enable or disable Dell Reliable Memory Technology (RMT) to identify and isolate memory errors in the system RAM. By default, the option is enabled.
  • Page 129 Enables to change the number of CPU cores available to the operating system. By default, the All Cores options is enabled. Enable Dell RMT Enable or disable Dell Reliable Memory Technology (RMT) to identify and isolate memory errors in the system RAM. By default, the option is enabled.

  • Page 130: Updating The Bios

    BIOS Event Log Clear Bios Event Log Displays BIOS events. By default, the Keep Log option is enabled. Dell Reliable Memory Technology Displays the Dell Reliable Memory Technology events. Events Updating the BIOS Updating the BIOS in Windows About this task...

  • Page 131: Updating The Bios In Linux And Ubuntu

    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 132: 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 133: 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 134: 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 135 (AC, battery, coin cell) and errors drain flea power by pressing and holding down power button for 3~5 seconds. CPU failure ● Run the Dell Support Assist/Dell Diagnostics tool. ● If problem persists, replace the system board. System board failure (included ●...

  • Page 136: Recovering The Operating System

    Timeout waiting on ME to Replace the system board. reply to HECI message. Recovering the operating system When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell SupportAssist OS Recovery. Troubleshooting...

  • Page 137: Real Time Clock-Rtc Reset

    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 138 2. Turn off the modem. 3. Turn off the wireless router. 4. Wait for 30 seconds. 5. Turn on the wireless router. 6. Turn on the modem. 7. Turn on your computer. Troubleshooting...

  • Page 139: 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 Tips Contact Support In Windows search, type Contact Support, and press Enter.

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