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Dell Precision 5480 Service Manual
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Dell Precision 5480 Service Manual

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Precision 5480
Service Manual
Regulatory Model: P154G
Regulatory Type: P154G003
May 2023
Rev. A00

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Summary of Contents for Dell Precision 5480

  • Page 1 Precision 5480 Service Manual Regulatory Model: P154G Regulatory Type: P154G003 May 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

    Transporting sensitive components.......................... 9 After working inside your computer..........................9 BitLocker..................................9 Chapter 2: Removing and installing components................10 Recommended tools................................10 Screw list..................................... 10 Major components of Precision 5480..........................11 Base cover................................... 13 Removing the base cover............................13 Installing the base cover.............................15 Battery....................................17 Lithium-ion battery precautions..........................17 Removing the battery..............................
  • Page 4 Deleting or changing an existing system setup password................. 73 Clearing BIOS (System Setup) and System passwords...................74 Chapter 5: Troubleshooting......................75 Handling swollen Lithium-ion batteries........................75 Dell SupportAssist Pre-boot System Performance Check diagnostics..............75 Running the SupportAssist Pre-Boot System Performance Check..............76 Built-in self-test (BIST)..............................76 M-BIST................................... 76 LCD Power rail test (L-BIST)...........................
  • Page 5 Recovering the operating system..........................79 Backup media and recovery options..........................79 Wi-Fi power cycle................................80 Drain residual flea power (perform hard reset)......................80 Chapter 6: Getting help and contacting Dell.................81 Contents...

  • Page 6: Chapter 1: Working Inside Your Computer

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

  • Page 7: Safety Precautions

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

  • Page 8: Esd Field Service Kit

    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 9: Transporting Sensitive Components

    Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport.

  • Page 10: Chapter 2: Removing And Installing Components

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

  • Page 11: Major Components Of Precision 5480

    T5, M1.4x4 System board M2x4 T5, M1.4x4 M1.6x2.3 Power button board with M1.6x2 fingerprint reader USH board M1.4x1.2 WLAN antennas M1.4x2.5 Major components of Precision 5480 The following image shows the major components of Precision 5480. Removing and installing components...
  • Page 12 1. Base cover 2. Battery 3. Right fan 4. Audio jack 5. System board 6. Speakers 7. Palm-rest 8. WLAN antennas Removing and installing components...

  • Page 13: Base Cover

    15. Heat sink 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 Removing and installing components...

  • Page 15: Installing The Base Cover

    Steps 1. Remove the eight (T5, M2x3) torx screws that secure the base cover to the computer. 2. Use a scribe to pry from the gap at the bottom-left corner of the base cover. Then slide the scribe towards the middle of bottom side, and then the left side of the system to disengage the clips.
  • Page 16 Removing and installing components...

  • Page 17: Battery

    Steps 1. Connect the battery cable to the connector on the system board. 2. Slide the base cover into its slot until it clicks into place and replace the eight (T5, M2x3) torx screws to secure the base cover to the computer. Next steps 1.

  • Page 18: Removing The Battery

    ● If the battery gets stuck inside your computer as a result of swelling, do not try to release it as puncturing, bending, or crushing a lithium-ion battery can be dangerous. In such an instance, contact Dell technical support for assistance. See www.dell.com/contactdell.

  • Page 19: Installing The Battery

    Steps 1. Unroute the WLAN antennas from the routing guides on the battery. 2. Remove the five (M2x4) screws that secure the battery to the palm-rest and keyboard assembly. 3. Slightly lift the battery at an angle and slide to remove from the palm-rest and keyboard assembly. Installing the battery Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 20: M.2 Solid-State Drive

    Steps 1. Place the battery onto its slot in the palm-rest and keyboard assembly. 2. Replace the five (M2x4) screws that secure the battery to the palm-rest and keyboard assembly. 3. Route the WLAN antennas using the routing guides on the battery. Next steps 1.

  • Page 21: Installing The M.2 2230 Solid State Drive

    Steps 1. Remove the (M2x2) screw that secures the SSD thermal plate to the M.2 2230 solid state drive bracket. 2. Lift to remove the SSD thermal plate away from the computer. 3. Remove the (M2x2) screw that secures the M.2 2230 solid state drive to the M.2 2230 solid state drive bracket. 4.
  • Page 22 Steps 1. Align and place the M.2 2230 solid state drive on the M.2 2230 solid state drive bracket. NOTE: Install the M.2 2230 solid state drive to the SSD bracket so that the top side (with the sticker) of the M.2 2230 solid state drive is facing up.

  • Page 23: Removing The M.2 2280 Solid State Drive

    Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer. Removing the M.2 2280 solid state drive Prerequisites NOTE: For computers shipped with M.2 2280 solid state drive. 1. Follow the procedure in Before working inside your computer.

  • Page 24: Left Fan

    About this task The figure indicates the location of the M.2 2280 solid state drive and provides a visual representation of the installation procedure. Steps 1. Carefully align and insert the M.2 2280 solid state drive to its slot on the system board. 2.

  • Page 25: Installing The Left Fan

    Steps 1. Carefully peel off the tweeter speaker from its compartment next to the fan connector to create more space to disconnect the fan cable. 2. Disconnect the left fan cable from the system board. 3. Remove the two (M2x4) screws that secure the left fan to the palm-rest and keyboard assembly. 4.

  • Page 26: Right Fan

    Steps 1. Align the screw holes on left fan with the screw holes on the palm-rest and keyboard assembly. 2. Replace the two (M2x4) screws that secure the left fan to the palm-rest and keyboard assembly. 3. Connect the left fan cable to the system board. 4.

  • Page 27: Installing The Right Fan

    2. Remove the base cover. About this task The following images indicate the location of the right fan and provide a visual representation of the removal procedure. Steps 1. Carefully peel off the tweeter speaker from its compartment next to the fan connector to create more space to disconnect the fan cable.
  • Page 28 About this task The following images indicate the location of the right fan and provide a visual representation of the installation procedure. Steps 1. Align the screw holes on right fan with the screw holes on the palm-rest and keyboard assembly. 2.

  • Page 29: Heat Sink

    Heat sink Removing the heat sink for integrated graphics Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task The figure indicates the location of the heat sink and provides a visual representation of the removal procedure. Steps 1.

  • Page 30: Removing The Heat Sink For Discrete Graphics

    Steps 1. Align and insert the heat sink into its slot on the system board. 2. Tighten the four captive screws that secure the heat sink to the system board. NOTE: Tighten the captive screws in the order that is marked on the heat sink next to the screws [1 > 2 > 3 > 4]. CAUTION: Do NOT over-torque the screws for the heat sink.

  • Page 31: Installing The Heat Sink For Discrete Graphics

    Steps 1. Loosen the five captive screws that secure the heat sink to the system board. NOTE: Loosen the captive screws in the order that is marked on the heat sink assembly next to the screws [5 > 4 > 3 > 2 >...

  • Page 32: Audio Jack

    Steps 1. Align and insert the heat sink into its slot on the system board. 2. Tighten the five captive screws that secure the heat sink to the system board. NOTE: Tighten the captive screws in the order that is marked on the heat sink next to the screws [1 > 2 > 3 > 4 > 5]. CAUTION: Do not over-torque the screws for the heat sink.

  • Page 33: Installing The Audio Jack

    Steps 1. Remove the three (M2x4) screws that secure the left USB Type-C bracket to the system board. 2. Lift to remove the left USB Type-C bracket from the system board. 3. Disconnect the audio jack FPC from its connector on the system board. 4.

  • Page 34: Speakers

    Steps 1. Align and place the audio jack in its slot on the palm-rest and keyboard assembly. 2. Connect the audio jack FPC to its connector on the system board. 3. Replace the (M1.6x3) screw to secure the audio jack to the system board. 4.

  • Page 35: Installing The Speaker

    Steps 1. Disconnect the left and right speaker cables from the connectors on the system board. 2. Peel the left and right tweeter speakers from their compartments on the palm-rest and keyboard assembly. 3. Remove the two (M1.6x1.8) screws that secure the left and right speakers to the palm-rest and keyboard assembly. 4.
  • Page 36 Steps 1. Align and place the left and right speakers into its slot on the palm-rest and keyboard assembly. 2. Route the left and right tweeter speakers using the routing guides on the system board. 3. Replace the two (M1.6x1.8) screws that secure the left and right speakers to the palm-rest and keyboard assembly. 4.

  • Page 37: Smart-Card Reader

    Smart-card reader Removing the smart-card reader Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the battery. 4. Remove the speakers. About this task The figure indicates the location of the smart-card reader and provides a visual representation of the removal procedure. Steps 1.

  • Page 38: Display Assembly

    Steps 1. Align and place the smart-card reader into its slot on the palm-rest and keyboard assembly. 2. Replace the two (M1.6x1.7) screws to secure the smart-card reader to the palm-rest and keyboard assembly. 3. Adhere the smart-card reader FFC to the palmrest and keyboard assembly. 4.
  • Page 39 Removing and installing components...
  • Page 40 Steps 1. Remove the two (T5, M1.4x4) Torx screws that secure the display FPC holder to the system board. 2. Remove the two (T5, M1.4x4) Torx screws that secure the display FPC to the system board. 3. Disconnect the display FPC from the system board and remove the interposer board. CAUTION: The pins on the interposer board are very fragile.

  • Page 41: Installing The Display Assembly

    5. Slide the bottom assembly slightly to the left and then move it away from the display assembly. NOTE: The display assembly is a Hinge-Up Design (HUD) assembly and cannot be further disassembled once it is removed from the bottom chassis. If any components in the display assembly are malfunctioning, then you must replace the entire display assembly.
  • Page 42 Steps 1. Align the screw holes on the display hinges to the screw holes on the palm-rest and keyboard assembly. 2. Replace the six (M2.5x5) screws to secure the display assembly to the palm-rest and keyboard assembly. 3. Use a plastic scribe to tuck the display FPC into the gap between the system board and the bottom assembly until the white line on the display connector lines up with the edge of the system board.

  • Page 43: System Board

    System board Removing the system board Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the M.2 2230 solid state drive M.2 2280 solid state drive. 4. Remove the battery. 5. Remove the left fan.
  • Page 44 Removing and installing components...
  • Page 45 Steps 1. Remove the four (T5, M1.4x4) Torx screws that secure the display FPC holder and display FPC to the system board. 2. Disconnect the display FPC from the system board and remove the interposer board. CAUTION: Technicians must remove the interposer board immediately after disconnecting the display FPC to prevent the board from falling out of the system during subsequent removal procedures.

  • Page 46: Installing The System Board

    6. Open the latch and disconnect the USH board FPC (for models shipped with a USH board) and touchpad FPC from their respective connectors. 7. Open the latch and disconnect the power button board with fingerprint reader FPC from the system board. 8.
  • Page 47 Removing and installing components...
  • Page 48 Steps 1. Align the screw holes on the USH board FPC (for models shipped with a USH board) and touchpad FPC. 2. Replace the four (M1.4x1.2) screws to secure the USH board FPC (for models shipped with a USH board) and touchpad FPC to the system board.

  • Page 49: Power Button With Fingerprint Reader

    Next steps 1. Install the heat sink for integrated graphics heat sink for discrete graphics. 2. Install the audio jack. 3. Install the right fan. 4. Install the left fan. 5. Install the battery. 6. Install the M.2 2230 solid state drive M.2 2280 solid state drive.

  • Page 50: Installing The Power-Button Board With Fingerprint Reader

    Steps 1. Remove the three (M1.6x2) screws that secure the fingerprint-reader bracket to the power-button board. 2. Remove the fingerprint-reader bracket from the power-button board. 3. Remove the power-button board with power-button FPC from the palm-rest and keyboard assembly. Installing the power-button board with fingerprint reader Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 51: Ush Board

    Steps 1. Align and place the power-button board with power-button FPC into its slot on the palm-rest and keyboard assembly. 2. Align and place the fingerprint-reader bracket on the power-button board. 3. Replace the three (M1.6x2) screws to secure the fingerprint-reader bracket to the power-button board. Next steps 1.

  • Page 52: Installing The Ush Daughter-Board

    8. Remove the system board. NOTE: The system board can be removed or installed together with the heat-sink attached. This simplifies the procedure and avoids breaking the thermal bond between the system board and the heat-sink. About this task The figure indicates the location of the USH daughter-board and provides a visual representation of the removal procedure. Steps 1.

  • Page 53: Wlan Antennas

    Steps 1. Align and place the USH board flat printed cable on the system board. 2. Replace the two (M1.4x1.2) screws that secure the USH board flat printed cable to the system board. Next steps 1. Install the system board. 2.

  • Page 54: Installing The Wlan Antennas

    About this task The figure indicates the location of the WLAN antennas and provides a visual representation of the removal procedure. Steps 1. Remove the two (M1.4x2.5) captive screws that secure the auxiliary antenna on the palm-rest and keyboard assembly. 2.
  • Page 55 Steps 1. Align and place the auxiliary and main antennas into its slot on the palm-rest and keyboard assembly. 2. Reroute the auxiliary and main antennas using the routing guides on the palm-rest and keyboard assembly. 3. Adhere the tapes securing the auxiliary and main antennas to the palm-rest and keyboard assembly. 4.

  • Page 56: Palm-Rest And Keyboard Assembly

    Palm-rest and keyboard assembly Removing the palm-rest and keyboard assembly Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the M.2 2230 solid state drive M.2 2280 solid state drive. 4. Remove the battery. 5.

  • Page 57: Installing The Palm-Rest And Keyboard Assembly

    Installing the palm-rest and keyboard assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the palm-rest and keyboard assembly and provides a visual representation of the installation procedure.

  • Page 58: 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 59: 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 60: One Time Boot Menu

    Depending on this computer and its installed devices, the items that are listed in this section may or may not appear. Table 3. BIOS setup options—System information menu Overview Precision 5480 BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the computer.
  • Page 61 Table 3. BIOS setup options—System information menu (continued) Overview Processor Type Displays the processor type. Maximum Clock Speed Displays the maximum processor clock speed. Minimum Clock Speed Displays the minimum processor clock speed. Current Clock Speed Displays the current processor clock speed. Core Count Displays the number of cores on the processor.
  • Page 62 By default, the Video/Power only on Type-C Ports option is disabled. Type-C Dock Override Enable to use connected Type-C Dell Dock to provide data stream with external USB ports disabled. When Type-C Dock Override is enabled, the Audio/Lan submenu is activated.
  • Page 63 Integrated Devices By default, the Type-C Dock Override option is enabled. Type-C Dock Audio Enable or disable the usage of audio on Dell Dock external ports. By default, the Audio option is enabled. Type-C Dock Lan Enable or disable the usage of LAN on Dell Dock external ports.
  • Page 64 Table 7. System setup options—Display menu (continued) Display By default, the option is enabled. Full Screen Logo Enable or disable full screen logo. By default, the option is disabled. Table 8. System setup options—Connection menu Connection Wireless Device Enable WLAN Enable or disable the internal WLAN device.
  • Page 65 By default, the Optimized option is enabled. USB Wake Support Wake on Dell USB-C Dock When enabled, connecting a Dell USB-C Dock will wake the system from Standby, Hibernate, and Power Off. By default, the Wake on Dell USB-C Dock option is enabled.
  • Page 66 Table 10. System setup options—Security menu (continued) Security Block Boot Until Cleared when the Block Boot Until Cleared option is enabled, you may not be able to boot until returning to this page to clear the warning. If an Admin Password is set, you need to unlock setup to clear the warning.
  • Page 67 Service operating system does not boot or is not installed. 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. BIOS setup...
  • Page 68 Table 13. System setup options—System Management menu System Management Service Tag Displays the Service Tag of the system. Asset Tag Create a system Asset Tag. AC Behavior Wake on AC Enable or disable the wake on AC option. By default, the option is disabled. Wake on LAN Wake on LAN Enable or disable the system to power on by special LAN signals when it...
  • Page 69 Table 15. System setup options—Pre-boot Behavior menu (continued) Pre-boot Behavior By default, the option is enabled. Warning and Errors Enable or disable the action to be done when a warning or error is encountered. By default, the Prompt on Warnings and Errors option is enabled. USB-C Warnings Enable Dock Warning Messages By default, the option is enabled.
  • Page 70 Table 17. System setup options—Performance menu Performance Multi Core Support Active Cores Enables to change the number of CPU cores available to the operating system. By default, the All Cores option is enabled. Multiple Atom Cores Enables to change the number of Atom cores available to the operating system. By default, the All Cores option is enabled.

  • Page 71: 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 72: 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 73: System And Setup Password

    System and setup password Table 20. System and setup password Password type Description System password Password that you must enter to log in to your system. Setup password Password that you must enter to access and make changes to the BIOS settings of your computer. You can create a system password and a setup password to secure your computer.

  • Page 74: 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 75: Chapter 5: Troubleshooting

    ● Using a non-Dell or incompatible battery may increase the risk of fire or explosion. Replace the battery only with a compatible battery purchased from Dell that is designed to work with your Dell computer. Do not use a battery from other computers with your computer.

  • Page 76: Running The Supportassist Pre-Boot System Performance Check

    Running the SupportAssist Pre-Boot System Performance Check Steps 1. Turn on your computer. 2. As the computer boots, press the F12 key as the Dell logo appears. 3. On the boot menu screen, select the Diagnostics option. 4. Click the arrow at the bottom left corner.

  • Page 77: Lcd Power Rail Test (L-Bist)

    LCD Built-in Self Test (BIST) Dell laptops have a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with the LCD (screen) of the Dell laptop or with the video card (GPU) and PC settings.
  • Page 78 (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 79: 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 80: Wi-Fi Power Cycle

    6. Install the battery. 7. Install the base cover. 8. Connect the power adapter to your computer. 9. Turn on your computer. NOTE: For more information about performing a hard reset, search in the Knowledge Base Resource at www.dell.com/ support. Troubleshooting...

  • Page 81: 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 23. 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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