Dell Latitude 5520 Service Manual
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Dell Latitude 5520 Service Manual

Dell Latitude 5520 Service Manual

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Latitude 5520
Service Manual
Regulatory Model: P104F
Regulatory Type: P104F001,P104F002
June 2022
Rev. A04
Questo manuale d'istruzione è fornito da trovaprezzi.it. Scopri tutte le offerte per
5XXW6
o cerca il tuo prodotto tra le
migliori offerte di Notebook
Dell Latitude 5520

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Summary of Contents for Dell Latitude 5520

  • Page 1 Questo manuale d’istruzione è fornito da trovaprezzi.it. Scopri tutte le offerte per Dell Latitude 5520 5XXW6 o cerca il tuo prodotto tra le migliori offerte di Notebook Latitude 5520 Service Manual Regulatory Model: P104F Regulatory Type: P104F001,P104F002 June 2022 Rev. A04...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2020-2022 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    Contents Chapter 1: Working inside your computer..................7 Before working inside your computer..........................7 Safety precautions................................7 Enter service mode................................8 Electrostatic discharge—ESD protection........................10 ESD field service kit ................................11 Transporting sensitive components..........................12 After working inside your computer..........................12 Chapter 2: Major components of your computer................13 Chapter 3: Removing and installing components................
  • Page 4 Installing the 4-cell battery............................39 Battery cable..................................40 Removing the battery cable............................40 Installing the battery cable............................41 Assembly inner frame............................... 42 Removing the assembly inner frame........................42 Installing the assembly inner frame......................... 44 LED board....................................47 Removing the LED board............................47 Installing the LED board.............................48 System fan..................................
  • Page 5 Deleting or changing an existing system setup password.................111 Clearing BIOS (System Setup) and System passwords..................111 Chapter 6: Troubleshooting......................112 Handling swollen Lithium-ion batteries........................112 Dell SupportAssist Pre-boot System Performance Check diagnostics...............113 Running the SupportAssist Pre-Boot System Performance Check............... 113 Built-in self-test (BIST)..............................113 M-BIST..................................113 LCD Power rail test (L-BIST)..........................
  • Page 6 Drain residual flea power (perform hard reset)......................117 Chapter 7: Getting help and contacting Dell................118 Contents...

  • Page 7: Chapter 1: Working Inside Your Computer

    Working inside your computer Topics: • Before working inside your computer • Safety precautions • Enter service mode • Electrostatic discharge—ESD protection • ESD field service kit • Transporting sensitive components • After working inside your computer Before working inside your computer About this task NOTE: The images in this document may differ from your computer depending on the configuration you ordered.

  • Page 8: Enter Service Mode

    1. Shut down the computer and disconnect the AC adapter from the computer. 2. Press and hold the <B> key on the keyboard, and then press the power button for 3 seconds until the Dell logo appears on the screen.
  • Page 9 3. Press any key to continue. NOTE: The Service Mode procedure automatically skips this step if the Owner Tag of the system is not set up in advance by the manufacturer. 4. When the ready-to-proceed message appears on the screen, press any key to proceed. The system emits three short beeps and shuts down immediately.

  • Page 10: Electrostatic Discharge-Esd Protection

    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 11: Esd Field Service Kit

    It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.

  • Page 12: Transporting Sensitive Components

    Transporting sensitive components When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport. After working inside your computer About this task CAUTION: Leaving stray or loose screws inside your computer may severely damage your computer.

  • Page 13: Chapter 2: Major Components Of Your Computer

    Major components of your computer...
  • Page 14 Major components of your computer Major components of your computer...
  • Page 15 1. Base cover 2. Battery 3. System Fan 4. Memory module 5. System board 6. Keyboard assembly 7. Speakers 8. Palm-rest assembly 9. Display assembly 10. Battery LED board 11. Coin-cell battery 12. Power button/fingerprint board 13. Assembly inner frame 14.

  • Page 16: Chapter 3: 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. Topics: • Recommended tools • Screw list • Subscriber Identity Module (SIM) card • Micro Secure Digital (SD) Card •...
  • Page 17 Some systems have magnetic surfaces. Ensure that the screws are not left attached to such surface when replacing a component. NOTE: Screw color may vary with the configuration ordered. Table 1. Latitude 5520 screw list Component Screw type Quantity Screw image...

  • Page 18: Subscriber Identity Module (Sim) Card

    Table 1. Latitude 5520 screw list (continued) Component Screw type Quantity Screw image Display hinge M2.5x3.5 (display hinge to display back cover) Display panel M2.5x3.5 Subscriber Identity Module (SIM) card Removing the SIM card Prerequisites 1. Follow the procedure in Before working inside your computer.

  • Page 19: Installing The Sim Card

    Steps 1. Insert a pin into the hole of the SIM card tray and push inward until the tray is released 2. Slide the SIM card tray out of the slot on the computer. 3. Remove the SIM card from the SIM card tray. 4.
  • Page 20 NOTE: SIM card or SIM card tray removal is only available on systems that are shipped with WWAN module. Hence, removing procedure is only applicable for systems that are shipped with WWAN module. About this task The following image indicates the location of the SIM card and provides a visual representation of the installation procedure. Steps 1.

  • Page 21: Micro Secure Digital (Sd) Card

    Next steps 1. Follow the procedure in After working inside your computer. Micro Secure Digital (SD) Card Removing the microSD card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Enter service mode. About this task The following images indicate the location of the microSD card and provide a visual representation of the removal procedure. Steps 1.

  • Page 22: Base Cover

    Steps 1. Align the microSD card to its slot on the computer. 2. Slide the microSD card into the slot until it clicks into place. Next steps Follow the procedures in After working inside your computer. Base cover Removing the base cover Prerequisites 1.
  • Page 23 Removing and installing components...

  • Page 24: Installing The Base Cover

    Steps 1. Loosen the eight captive screws that secure the base cover to the palm-rest assembly and keyboard assembly. 2. Using a plastic scribe, pry the base cover from the U-shaped indents at the top edge of the base cover to remove the base cover from the palm-rest assembly and keyboard assembly.

  • Page 25: Wlan Card

    Steps 1. Align the screw holes on the base cover with the screw holes on the palm-rest assembly and keyboard assembly, and then snap the base cover into place. 2. Tighten the eight captive screws that secure the base cover to the palm-rest assembly and keyboard assembly. Next steps 1.

  • Page 26: Installing The Wlan Card

    Steps NOTE: When removing the WLAN card from the system, if the adhesive pad which helps secure the WLAN card in place is removed from the system along with the WLAN card, adhere it back to the system. 1. Loosen the single captive screw that secures the WLAN card bracket to the WLAN card. 2.
  • Page 27 Steps 1. Connect the antenna cables to the wireless card. The following table provides the antenna-cable color scheme: Table 2. Antenna-cable color scheme Connectors on the wireless card Antenna-cable color Main (white triangle) White Auxiliary (black triangle) Black 2. Place the wireless-card bracket on the wireless card. 3.

  • Page 28: Wwan Card

    WWAN card Removing the WWAN card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Enter service mode. 3. Remove the card. 4. Remove the microSD card. 5. Remove the base cover. About this task The following image indicates the location of the WWAN card and provide a visual representation of the removal procedure. Steps 1.

  • Page 29: Installing The Wwan Card

    Installing the WWAN card 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 WWAN card and provides a visual representation of the installation procedure. Steps 1.

  • Page 30: Solid-State Drive

    NOTE: For instructions on how to find your computer's IMEI (International Mobile Station Equipment Identity) number, see the knowledge base article 000143678 at www.dell.com/support. Next steps 1. Install the base cover. 2. Install the microSD card. 3. Install the card.

  • Page 31: Installing The M.2 2280 Solid-State Drive

    Installing the M.2 2280 solid-state drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task NOTE: Slot 2 can only support M.2 Gen 4 PCIe x4 NVMe solid-state drive. You can refer the below procedure to install the M.2 2280 solid-state drive in both SLOT 1 and SLOT 2.

  • Page 32: Removing The M.2 2230 Solid-State Drive Holder

    About this task The following images indicate the location of the M.2 2230 solid-state drive and provide a visual representation of the removal procedure. Steps 1. Remove the single screw (M2x4) that secures the M.2 2230 solid-state drive to the system board. 2.

  • Page 33: Installing The M.2 2230 Solid-State Drive Holder

    Steps Pry and remove the M.2 2230 solid-state drive holder from the screw hole on the system board. Installing the M.2 2230 solid-state drive holder 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 M.2 2230 solid-state drive holder and provides a visual representation of the installation procedure.

  • Page 34: Installing The M.2 2230 Solid-State Drive

    Next steps 1. Install the base cover. 2. Install the microSD card. 3. Install the card. 4. Follow the procedure in After working inside your computer. Installing the M.2 2230 solid-state drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the M.2 2230 solid-state drive and provides a visual representation of the installation procedure.

  • Page 35: Installing The Memory Modules

    2. Enter service mode. 3. Remove the card. 4. Remove the microSD card. 5. Remove the base cover. About this task The following images indicate the location of the memory modules and provide a visual representation of the removal procedure. Steps 1.

  • Page 36: Battery

    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 37: Removing The 3-Cell 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 38: Installing The 3-Cell Battery

    Installing the 3-cell battery 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 3-cell battery and provides a visual representation of the installation procedure. NOTE: If battery is disconnected from system board for service, then there is a delay during system boot-up as the system undergoes RTC battery reset.

  • Page 39: Installing The 4-Cell Battery

    NOTE: If battery is disconnected from system board for service, then there is a delay during system boot-up as the system undergoes RTC battery reset. About this task The following images indicate the location of the battery and provide a visual representation of the removal procedure. Steps 1.

  • Page 40: Battery Cable

    Steps 1. Align and place the battery from the left side on the computer. 2. Replace the three screws (M2x4) that secure the battery to the palm-rest assembly and keyboard assembly. 3. Connect the battery cable to the system board. Next steps 1.

  • Page 41: Installing The Battery Cable

    About this task The following images indicate the location of the battery cable and provide a visual representation of the removal procedure. Steps 1. Flip the battery and unroute the battery cable from the routing guides on the battery. 2. Disconnect the battery cable from the connector on the battery. 3.

  • Page 42: Assembly Inner Frame

    Steps 1. Align and place the battery cable on the battery. 2. Route the battery cable through the routing guides on the battery. 3. Connect the battery cable to the connector on the battery. Next steps 1. Install the battery. 2.
  • Page 43 Removing and installing components...

  • Page 44: Installing The Assembly Inner Frame

    Steps 1. Unroute the antenna cables from the routing guides on the assembly inner frame. 2. Remove the screw (M2x3) that secures the fingerprint bracket to the assembly inner frame. 3. Disconnect the speaker cable from the connector on the system board, and unroute the speaker cable from the routing guides on the assembly inner frame.
  • Page 45 Removing and installing components...
  • Page 46 Steps 1. Align the screw holes on the assembly inner frame with the screw holes on the system board and the palm-rest assembly. NOTE: Ensure that the tab on the top-left corner of the assembly inner frame is installed underneath the tab on the palm-rest assembly.

  • Page 47: Led Board

    LED board Removing the LED board Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Enter service mode. 3. Remove the card. 4. Remove the microSD card. 5. Remove the base cover. 6. Remove the WLAN card. 7.

  • Page 48: Installing The Led Board

    Installing the LED board 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 LED board and provides a visual representation of the installation procedure. Steps 1.

  • Page 49: System Fan

    System fan Removing the system fan Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the card. 3. Remove the microSD card. 4. Remove the base cover. 5. Remove the battery. About this task The following images indicate the location of the system fan and provide a visual representation of the removal procedure. Steps CAUTION: Do not damage the thermal fan sponge during any replacement procedures.

  • Page 50: Heat Sink

    Steps 1. Align the screw holes on the system fan with the screw holes on the palm-rest assembly. 2. Replace the two screws (M2x3) to secure the system fan to the palm-rest assembly. 3. Connect the system-fan cable to the connector on the system board. Next steps 1.

  • Page 51: Installing The Heat Sink (For Computers Shipped With Integrated Graphics Card)

    Steps 1. Remove the screw (M2x3) that secures the heat sink to the palm-rest assembly. 2. Loosen the four captive screws that secure the heat sink to the system board. 3. Lift the heat sink off the system board. Installing the heat sink (for computers shipped with integrated graphics card) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 52: Removing The Heat Sink (For Computers Shipped With Discrete Graphics Card)

    Steps 1. Align the screw holes on the heat sink with the screw holes on the system board. 2. Tighten the four captive screws that secure the heat sink to the system board. 3. Replace the screw (M2x3) that secures the heat sink to the palm-rest assembly. Next steps 1.

  • Page 53: Installing The Heat Sink (For Computers Shipped With Discrete Graphics Card)

    Steps 1. Remove the screw (M2x3) that secures the heat sink to the palm-rest assembly 2. Loosen the seven captive screws that secure the heat sink to the system board. 3. Lift the heat sink off the system board. Installing the heat sink (for computers shipped with discrete graphics card) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 54: Speakers

    Steps 1. Align the screw holes on the heat sink with the screw holes on the system board. 2. Tighten the seven captive screws that secure the heat sink to the system board. 3. Replace the screw (M2x3) that secures the heat sink to the palm-rest assembly. Next steps 1.

  • Page 55: Installing The Speaker

    About this task The following images indicate the location of the speaker and provide a visual representation of the removal procedure. Steps 1. Unroute the speaker cable from the routing guides on the palm-rest assembly. 2. Lift the speakers along with the cable off the palm-rest assembly. Installing the speaker Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 56: System Board

    Steps 1. Align and place the speakers on the palm-rest assembly. 2. Route the speaker cable through the routing guide on palm-rest assembly. Next steps 1. Install the assembly inner frame 2. Install the battery. 3. Install the base cover. 4.
  • Page 57 a. Remove the single screw (M2x4) that secures the M.2 2280 solid-state drive to the system board. b. Slide and remove the M.2 2280 solid-state drive from the solid-state drive slot on the system board. c. Peel and remove the thermal pad mylar sticker. 6.
  • Page 58 Removing and installing components...

  • Page 59: Installing The System Board

    Steps NOTE: The system board can be removed and installed along with the thermal module attached, to preserve the thermal bond between the system board and heat-sink. In order to do so, technicians must remove the two M2x5 screws securing the system fan to the palm-rest assembly.
  • Page 60 Steps 1. Flip the system board and connect the coin-cell battery cable to the connector on the system board. 2. Flip over and slide the system board to make the USB Type-C connector to toe-in to the hinge saddle and align the screw holes on the system board with the screw holes on the palm-rest assembly and keyboard assembly.

  • Page 61: Power-Button Board

    4. Install the heat sink. 5. Install the WWAN card. 6. Install the WLAN card. 7. Install the memory module. 8. Install the solid-state drive. 9. Install the base cover. 10. Install the microSD card. 11. Install the card. 12. Follow the procedure in After working inside your computer.

  • Page 62: Installing The Power-Button Board

    Steps 1. Remove the two screws (M2x2) that secure the power-button board to the palm-rest assembly. 2. Lift the power-button board off the palm-rest assembly. Installing the power-button board About this task The following images indicate the location of the power-button board and provide a visual representation of the installation procedure.

  • Page 63: Smart Card Reader

    Steps 1. Align and place the power-button board on the palm-rest assembly. 2. Replace the two screws (M2x2) that secure the power-button board to the palm-rest assembly. Next steps 1. Install the system board. 2. Install the assembly inner frame. 3.

  • Page 64: Installing The Smart Card Reader

    5. Remove the WLAN card. 6. Remove the WWAN card. 7. Remove the battery. 8. Remove the assembly inner frame. About this task The following images indicate the location of the smart card reader and provide a visual representation of the removal procedure.
  • Page 65 About this task The following image indicates the location of the smart card reader and provides a visual representation of the installation procedure. Steps 1. Align and place the smart card reader on the palm-rest assembly. 2. Replace the two screws (M2x3) that secure the smart card reader to the palm-rest assembly. 3.

  • Page 66: Keyboard Assembly

    Keyboard assembly Removing the keyboard assembly Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the card. 3. Remove the microSD card. 4. Remove the base cover. 5. Remove the WLAN card. 6. Remove the WWAN card.

  • Page 67: Installing The Keyboard Assembly

    Steps 1. Open the latch and disconnect the backlight cable and the keyboard cable from the connector on the clickpad. 2. Open the plastic tapes on the keyboard assembly to access the keyboard assembly screws. 3. Remove the 26 screws (M2x2) that secure the keyboard assembly to the palm-rest assembly. 4.
  • Page 68 Steps 1. Align and place the keyboard assembly on the palm-rest assembly. 2. Replace the 26 screws (M2x2) that secure the keyboard assembly to the palm-rest assembly. 3. Close the plastic tapes to cover the keyboard assembly screws. 4. Connect the backlight cable and the keyboard cable to the connector on the clickpad. Next steps 1.

  • Page 69: Keyboard Bracket

    Keyboard bracket Removing the keyboard bracket Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the card. 3. Remove the microSD card. 4. Remove the base cover. 5. Remove the WLAN card. 6. Remove the WWAN card.

  • Page 70: Display Assembly

    About this task The following image indicates the location of the keyboard bracket and provides a visual representation of the installation procedure. Steps 1. Align and place the keyboard on the keyboard bracket. 2. Replace the ten screws (M2x2) to secure the keyboard to the keyboard bracket. Next steps 1.
  • Page 71 4. Remove the microSD card. 5. Remove the base cover. 6. Remove the WLAN card. 7. Remove the WWAN card. About this task The following images indicate the location of the display assembly and provide a visual representation of the removal procedure. Removing and installing components...
  • Page 72 Steps 1. Peel the adhesive tape and disconnect the sensor-board cable from the connector on the system board. 2. Remove the two screws (M2x3) that secure the eDP cable bracket to the system board. 3. Lift the eDP cable bracket away from the system. 4.

  • Page 73: Installing The Display Assembly

    5. Using the pull tab, disconnect the display cable from the connector on the system board. 6. Disconnect the eDP cable from the connector on the system board and unroute it from the routing guide. 7. Open the display assembly to a 180 degree and flip over the computer, and then place the computer on a flat surface. 8.
  • Page 74 Steps 1. Place the display assembly on the system, and align the screw holes on the display hinges with screw holes on the system board. 2. Replace the six screws (M2.5x5) that secure the display hinges to the system board. 3.

  • Page 75: Display Bezel

    Next steps 1. Install the WWAN card. 2. Install the WLAN card. 3. Install the base cover. 4. Install the microSD card. 5. Install the card. 6. Follow the procedure in After working inside your computer. Display bezel Removing the display bezel Prerequisites 1.

  • Page 76: Installing The Display Bezel

    CAUTION: Carefully pry and remove the display bezel to minimize the risk of display panel damages. 1. Using a plastic scribe, pry open the recesses near the left and right hinges on the bottom edge of the display bezel. 2. Carefully work your way around the edges of the display bezel to release it from the display back cover. 3.

  • Page 77: Display Panel

    Display panel Removing the display panel Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Enter service mode. 3. Remove the card. 4. Remove the microSD card. 5. Remove the base cover. 6. Remove the display assembly. 7.
  • Page 78 Removing and installing components...

  • Page 79: Installing The Display Panel

    Steps NOTE: The display panel is preassembled with the display brackets as a single service part. Do not pull the Stretch Release (SR) tapes and separate the brackets from the display panel. 1. Remove the four screws (M2.5x3.5) that secure the display panel to the display back cover. NOTE: While removing the display panel, disengage the display panel tabs from the display cover before flipping it over 2.
  • Page 80 Removing and installing components...
  • Page 81 Steps 1. Connect the display cable to the connector on the display panel and close the latch. 2. Adhere the conductive tape to secure the display cable to the display panel. 3. Close the display panel and the display back cover to assemble. NOTE: Ensure that the display panel tabs are inserted into the slots on the display cover.

  • Page 82: Camera/Microphone Module

    Camera/microphone module Removing the camera/microphone module Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Enter service mode. 3. Remove the SIM card 4. Remove the microSD card. 5. Remove the base cover. 6. Remove the display assembly.

  • Page 83: Edp/Display Cable

    Steps 1. Align and place the camera/microphone module into the slot on the display back cover. 2. Connect the camera/microphone cable to the connector on the camera/microphone module. Next steps 1. Install the display panel. 2. Install the display hinges. 3.

  • Page 84: Installing The Edp/Display Cable

    Steps 1. Disconnect the eDP/display cable from the connector on the camera/microphone module. 2. Peel the conductive tape and unroute the eDP/display cable to release it from adhesive and lift the eDP/display cable from the display back cover. Installing the eDP/display cable Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 85: Sensor Board

    Steps 1. Connect the eDP/display cable to the connector on the camera. 2. Adhere the eDP/display cable to the display back cover. 3. Adhere the conductive tape and route the eDP/display cable to the display back cover. Next steps 1. Install the display panel.

  • Page 86: Installing The Sensor Board

    3. Remove the card. 4. Remove the microSD card. 5. Remove the base cover. 6. Remove the display assembly. 7. Remove the display bezel. 8. Remove the display panel. About this task The following images indicate the location of the sensor board and provide a visual representation of the removal procedure. Steps 1.

  • Page 87: Display Hinges

    Steps 1. Align and place the sensor board on the display back cover. 2. Connect the display cable to the connector on the sensor board and close the latch. Next steps 1. Install the display panel. 2. Install the display bezel.

  • Page 88: Installing The Display Hinges

    Steps 1. Remove the single screw (M2x3.5) that secures the right hinge to the display back cover. 2. Lift and remove the right hinge from the display back cover. 3. Remove the single screw (M2x3.5) that secures the left hinge to the display back cover. 4.
  • Page 89 Steps 1. Align the screw hole on the left hinge with the screw hole on the display back cover. 2. Replace the single screw (M2x3.5) to secure the left hinge to the display back cover. 3. Align the screw hole on the right hinge with the screw hole on the display back cover. 4.

  • Page 90: Display Back Cover

    Display back cover Removing the display back cover Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Enter service mode. 3. Remove the card. 4. Remove the microSD card. 5. Remove the base cover. 6. Remove the display assembly.

  • Page 91: Dummy Sim-Card Slot Filler

    About this task The following images indicate the location of the display back cover and provides a visual representation of the installation procedure. Steps Place the display back cover on a flat surface. Next steps 1. Install the display hinges. 2.

  • Page 92: Installing The Dummy Sim-Card Slot Filler

    7. Remove the assembly Inner frame. 8. Remove the system fan. 9. Remove the heat sink. 10. Remove the battery. 11. Remove the system board. 12. Remove the smart card reader. 13. Remove the keyboard assembly. 14. Remove the display assembly.

  • Page 93: Palm-Rest Assembly

    Steps 1. Place the dummy SIM-card slot filler into its compartment on the palm rest. NOTE: Ensure that the dummy SIM-card slot filler is aligned with the ribs on the palm-rest assembly. 2. Press the dummy SIM-card slot filler until it clicks into place and ensure it fits securely into the SIM card slot. Next steps 1.

  • Page 94: Installing The Palm-Rest Assembly

    4. Remove the base cover. 5. Remove the WLAN card. 6. Remove the WWAN card. 7. Remove the assembly Inner frame. 8. Remove the system fan. 9. Remove the heat sink. 10. Remove the battery. 11. Remove the system board. 12.
  • Page 95 Steps Place the palm-rest assembly on a flat surface. Next steps 1. Install the dummy SIM-card slot filler (only for non-WWAN configuration). 2. Install the display assembly. 3. Install the keyboard assembly 4. Install the smart card reader. 5. Install the system board.

  • Page 96: Chapter 4: Software

    Topics: • Operating system • Downloading the drivers Operating system Your Latitude 5520 supports the following operating systems: ● Windows 10 Pro, 64-bit ● Ubuntu Linux 20.04 LTS, 64-bit Downloading the drivers Steps 1. Turn on your computer. 2. Go to www.dell.com/support.

  • Page 97: Chapter 5: 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 98: One Time Boot Menu

    NOTE: Depending on your computer and its installed devices, the items listed in this section may or may not appear. Table 5. System setup options—System information menu Overview Latitude 5520 BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the computer.
  • Page 99 Table 5. System setup options—System information menu (continued) Overview Primary Displays that battery is primary. Battery Level Displays the battery level of the computer. Battery State Displays the battery state of the computer. Health Displays the battery health of the computer. AC Adapter Displays whether the AC adapter is connected or not.
  • Page 100 Table 6. System setup options—Boot Configuration menu Boot Configuration Boot Sequence Boot mode Displays the boot mode. Boot Sequence Displays the boot sequence. Secure Digital (SD) Card Boot Enable or disable the SD card read-only boot. By default, the Secure Digital (SD) Card Boot option is not enabled. Secure Boot Enable Secure Boot Enable or disable the secure boot feature.
  • Page 101 By default, the Video/Power only on Type-C Ports option is disabled. Type-C Dock Override Enables to use connected Type-C Dell Dock to provide data stream with external USB ports disabled. When Type-C Dock override is enabled, the Video/Audio/Lan submenu is activated.
  • Page 102 Table 8. System setup options—Storage menu (continued) Storage By default, the Secure Digital (SD) Card Read-Only Mode option is not enabled. Table 9. System setup options—Display menu Display Display Brightness Brightness on battery power Enable to set screen brightness when the computer is running on battery power.
  • Page 103 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 computer from standby. By default, the Wake on Dell USB-C Dock option is enabled. Block Sleep Enables to block entering sleep (S3) mode in the operating system.
  • Page 104 Table 12. System setup options—Security menu (continued) Security TPM 2.0 Security On Enable or disable TPM 2.0 security options. By default, the TPM 2.0 Security On option is enabled. Attestation Enable Enables to control whether the Trusted Platform Module (TPM) Endorsement Hierarchy is available to the operating system.
  • Page 105 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 14. System setup options—Update, Recovery menu...
  • Page 106 By default, the option is enabled. Dell Auto OS Recovery Threshold Controls the automatic boot flow for SupportAssist System Resolution Console and for Dell OS Recovery Tool. By default, the threshold value is set to 2. Table 15. System setup options—System Management menu...
  • Page 107 Table 17. System setup options—Pre-boot Behavior menu Pre-boot Behavior Adapter Warnings Enable Adapter Warnings Enable or disable the warning messages during boot when the adapters with less power capacity are detected. By default, the option is enabled. Warning and Errors Enable or disable the action to be done when a warning or error is encountered.

  • Page 108: Updating The Bios

    For more information on this subject, search in the Knowledge Base Resource at www.dell.com/support. Steps 1. Go to www.dell.com/support. 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.

  • Page 109: Updating The Bios In Linux And Ubuntu

    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 110: System And Setup Password

    ● USB drive formatted to the FAT32 file system (key does not have to be bootable) ● BIOS executable file that you downloaded from the Dell Support website and copied to the root of the USB drive ● AC power adapter that is connected to the computer ●...

  • Page 111: 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 112: Chapter 6: 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 113: Dell Supportassist Pre-Boot System Performance Check Diagnostics

    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 114: 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 115: System Diagnostic Lights

    System diagnostic lights Battery-status light Indicates the power and battery-charge status. Solid white — Power adapter is connected and the battery has more than 5 percent charge. Amber — Computer is running on battery and the battery has less than 5 percent charge. ●...

  • Page 116: Recovering The Operating System

    It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures.
  • Page 117 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 118 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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