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Dell P137G Service Manual
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Dell P137G Service Manual

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Latitude 5421
Service Manual
Regulatory Model: P137G
Regulatory Type: P137G003/P137G004
June 2021
Rev. A00

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Summary of Contents for Dell P137G

  • Page 1 Latitude 5421 Service Manual Regulatory Model: P137G Regulatory Type: P137G003/P137G004 June 2021 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, 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 on your computer................... 6 Safety instructions................................6 Working inside your computer............................ 6 Entering Service Mode..............................8 Exiting Service Mode..............................9 After working inside your computer..........................9 Chapter 2: Removing and installing components................10 Recommended tools................................10 Screw list....................................11 Major components of your system..........................
  • Page 4 LED board....................................39 Removing the LED board............................39 Installing the LED board.............................40 Heat sink and fan assembly............................. 41 Removing the heat sink and fan assembly - UMA configuration..............41 Installing the heat sink and fan assembly - UMA configuration............... 42 Removing the heat sink and fan assembly - Discrete configuration...............43 Installing the heat sink and fan assembly - Discrete configuration..............
  • Page 5 System setup options..............................106 Updating the BIOS in Windows ............................116 Updating BIOS on systems with BitLocker enabled...................116 Updating the Dell BIOS in Linux and Ubuntu environments................117 Flashing BIOS (USB key)............................117 System and setup password............................117 Assigning a system setup password........................117 Deleting or changing an existing system setup password................

  • Page 6: Chapter 1: Working On 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 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: Entering Service Mode

    1. Shut down your computer and disconnect the AC adapter. 2. Hold <B> key on the keyboard and press the power button for 3 seconds or until the Dell logo appears on the screen. 3. Press any key to continue.

  • Page 9: Exiting Service Mode

    Once the computer shuts down, you may perform the replacement procedures without disconnecting the battery cable from the system board. Exiting Service Mode Service Mode allows users to immediately cut off electricity from the computer and conduct repairs without disconnecting the battery cable from the system board.

  • 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. Topics: • Recommended tools • Screw list • Major components of your system • SIM card tray • Micro Secure Digital (SD) Card •...

  • Page 11: Screw List

    Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box. This is to ensure that the correct number of screws and correct screw type is restored when the component is replaced.
  • Page 12 Table 1. Screw list (continued) Component Screw type Quantity Screw image Keyboard assembly M2x2 Keyboard bracket M2x2 Display assembly M2.5x5 (display hinges to palm-rest assembly) Display hinge M2.5x3 (display hinges to display back cover) Display panel M2.5x3 Removing and installing components...

  • Page 13: Major Components Of Your System

    Major components of your system 1. Base cover Removing and installing components...

  • Page 14: Sim Card Tray

    16. WLAN card 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 15: Installing The Sim Card

    Steps 1. Insert a pin into the release hole to release the SIM card tray. 2. Push the pin to disengage the lock, and eject the SIM card tray. 3. Slide the SIM card tray out of the slot on the computer. 4.

  • Page 16: Micro Secure Digital (Sd) 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. Place the SIM card into the SIM card tray with the metallic contact facing up. 4.

  • Page 17: Installing The Microsd Card

    Steps 1. Push the microSD card to release it from the slot. 2. Slide the microSD card from the computer. Installing the microSD 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 microSD card and provides a visual representation of the installation procedure.

  • Page 18: Base Cover

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

  • Page 19: Installing The Base Cover

    Steps 1. Loosen the eight captive screws that secure the base cover to the palm-rest and keyboard assembly. 2. Using the flat-end of plastic scribe, pry the base cover from the U-shaped indents at the top edge of the base cover and continue to work on the sides to release the base cover from the palm-rest and keyboard assembly.
  • Page 20 Removing and installing components...

  • Page 21: Wireless Card

    Steps 1. Align the screw holes on the base cover with the screw holes on the palm-rest 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 and keyboard assembly. Next steps 1.

  • Page 22: Installing The Wireless 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. Loosen the captive screw that secures the wireless-card bracket to the wireless card and system board. 2.
  • Page 23 Steps 1. Connect the antenna cables to the wireless card. The following table provides the antenna-cable color scheme for the wireless card that is supported by your computer. Table 2. Antenna-cable color scheme Connectors on the Antenna-cable color Silkscreen marking wireless card △...

  • Page 24: Wireless Wide Area Network (Wwan) Card

    5. Follow the procedure in After working inside your computer. Wireless Wide Area Network (WWAN) Card Removing the WWAN card Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Enter Service Mode. 3. Remove the base cover. 4.

  • Page 25: 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 26: Solid-State Drives

    Next steps 1. Install the card. 2. Install the microSD card. 3. Install the base cover. 4. Exit Service Mode. 5. Follow the procedure in After working inside your computer. Solid-state drives Removing the 2230 solid-state drive Prerequisites 1. Follow the procedure in Before working inside your computer.

  • Page 27: Installing The 2230 Solid-State Drive

    Steps 1. Remove the two (M2x3) screws that secures the thermal plate to the palm-rest assembly. 2. Remove the single (M2x3) screw securing the solid-state drive assembly in place. 3. Slide and remove the solid-state drive assembly from the computer. 4.
  • Page 28 The following image indicates the location of the 2230 solid-state drive that is installed in M.2 slot and provides a visual representation of the installation procedure. Steps 1. Align the holes on the solid-state drive and solid-state drive bracket. 2. Replace the single (M2x3) screw securing the solid-state drive and the solid-state drive bracket to form a solid-state drive assembly.

  • Page 29: Removing The 2280 Solid-State Drive

    Removing the 2280 solid-state drive Prerequisites 1. Follow the procedure in Before working inside your computer. NOTE: Solid-state drives are fragile. Exercise care when handling the solid-state drive. NOTE: To avoid data loss, do not remove the solid-state drive while the computer is in sleep or on state. 2.
  • Page 30 About this task NOTE: Solid-state drives are fragile. Exercise care when handling the solid-state drive. NOTE: Depending on the configuration ordered, the computer one may support a 2280 solid-state drive, or a 2230 solid-state drive in M.2 slot. NOTE: This procedure is applicable if you are installing a 2280 solid-state drive in M.2 slot. The following image indicates the location of the 2280 solid-state drive that is installed in M.2 slot and provides a visual representation of the installation procedure.

  • Page 31: Memory

    Memory Removing the memory module Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Enter Service Mode. 3. Remove the microSD card. 4. Remove the card. 5. Remove the base cover. About this task NOTE: Latitude 5421 supports two memory slots. The following images indicate the location of the memory module and provide a visual representation of the removal procedure.

  • Page 32: Battery

    About this task NOTE: Latitude 5421 supports two memory slots. The following image indicates the location of the memory module and provides a visual representation of the installation procedure. Steps 1. Align the notch on the memory module with the tab on the memory-module slot. 2.

  • Page 33: 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 34: Installing The Battery

    Steps 1. Disconnect the battery cable from the system board, if it was not disconnected earlier. 2. Remove the two (M2x3) screws that secure the battery to the palm-rest and keyboard assembly. 3. Lift the battery off 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 35: Battery Cable

    Battery cable Removing the battery cable 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 battery. NOTE: If battery is disconnected from system board for service, then there is a delay during system boot as the system undergoes RTC battery reset.

  • Page 36: Assembly Inner Frame

    About this task The following image indicates the location of the battery cable and provides a visual representation of the installation procedure. Steps 1. Align and place the battery cable on the battery. 2. Route the battery cable through the routing guides on the battery. 3.
  • Page 37 About this task The following image indicates the location of the assembly inner frame and provides a visual representation of the removal procedure. Steps 1. Unroute the antenna cables from the routing guides on the assembly inner frame. 2. Disconnect the speaker cable from the connector on the system board and unroute the cable from the routing guides on the assembly inner frame.

  • Page 38: Installing The Assembly Inner Frame

    4. Remove the seven screws (M2x3) that secure the assembly inner frame to the system board and the palm-rest assembly . 5. Lift the assembly inner frame off the system board and the palm-rest assembly. Installing the assembly inner frame Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 39: Led Board

    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 40: Installing The Led Board

    About this task The following image indicates the location of the LED board and provides a visual representation of the removal procedure. Steps 1. Disconnect the LED-board cable from the connector on the system board. 2. Peel the LED-board cable off the coin-cell battery. 3.

  • Page 41: Heat Sink And Fan Assembly

    Steps 1. Align the screw hole on the LED board with the screw hole on the palm-rest assembly. 2. Replace the single screw (M2x3) to secure the LED board to the palm-rest assembly. 3. Route the LED-board cable and connect the cable to the connector on the system board. CAUTION: Do not route the LED-board cable under the coin-cell battery.

  • Page 42: Installing The Heat Sink And Fan Assembly - Uma Configuration

    NOTE: The heat sink may become hot during normal operation. Allow sufficient time for the heat sink to cool before you touch it. 2. Enter Service Mode. 3. Remove the card. 4. Remove the microSD card. 5. Remove the base cover.

  • Page 43: Removing The Heat Sink And Fan Assembly - Discrete Configuration

    Steps 1. Align the screw holes on the heat sink and fan assembly with the screw holes on the system board. 2. In sequential order (as indicated on the heat sink), tighten the four (M2x3) and two (M2x5) screws that secure the heat sink and fan assembly to the system board.

  • Page 44: Installing The Heat Sink And Fan Assembly - Discrete Configuration

    Steps 1. In reverse sequential order (as indicated on the heat sink), remove the six (M2x3) and two (M2x5) screws that secure the heat sink and fan assembly to the system board. 2. Lift the heat sink and fan assembly off the system board. Installing the heat sink and fan assembly - Discrete configuration Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 45: Speakers

    Steps 1. Align the screw holes on the heat sink and fan assembly with the screw holes on the system board. 2. In sequential order (as indicated on the heat sink), tighten the six (M2x3) and two (M2x5) screws that secure the heat sink and fan assembly to the system board.

  • Page 46: Installing The Speakers

    Steps 1. Peel the tape that secures the speaker cable to the palm-rest and keyboard assembly. 2. Disconnect the speaker cable from the system board. 3. Note the speaker cable routing, and remove the speaker cable from the routing guides on the palm-rest and keyboard assembly.

  • Page 47: Usb Type-C Bracket

    Steps 1. Using the alignment posts and rubber grommets, place the speakers on the slots of the palm-rest and keyboard assembly. 2. Connect the speaker cable to the system board. 3. Route the speaker cable through the bottom-left corner of the system and ensure that the speaker cables are routed firmly into the routing channels on the inner frame.

  • Page 48: Installing The Usb Type-C Bracket

    Steps 1. Remove the three (M2x5) screws that secure the USB type-C bracket to the system board. 2. Lift the USB type-C bracket off the system. Installing the USB type-C bracket Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the USB type-C bracket and provides a visual representation of the installation procedure.

  • Page 49: System Board

    Steps 1. Place the USB type-C bracket on the system board and align the holes of the bracket and the system board. 2. Replace the three (M2x5) screws to secure the USB type-C bracket to the system board. Next steps 1.
  • Page 50 12. Remove the assembly inner frame. About this task The following image indicates the connectors on your system board. Figure 1. System board connectors 1. Fingerprint reader connector 2. WWAN connector 3. Camera/IR cable connector 4. eDP/display cable connector 5. Touch and sensor cable connector 6.
  • Page 51 Steps NOTE: The system board can be removed and installed with the heat sink attached in order to simplify the procedure and preserve the heat sink between the system board and heat-sink. In order to do so, technicians must also remove the two (M2x5) screws the secure the system fan to the system board.

  • Page 52: Installing The System Board

    NOTE: For the models shipped with a fingerprint reader, disconnect the fingerprint reader cable from the connector on the system board before removing the system board from the palm-rest assembly and keyboard assembly. 1. Remove the two (M2x3) screws that secure the eDP/display cable bracket to the system board. 2.
  • Page 53 Figure 2. System board connectors 1. Fingerprint reader connector 2. WWAN connector 3. Camera/IR cable connector 4. eDP/display cable connector 5. Touch and sensor cable connector 6. Memory modules 7. Battery cable connector 8. Clickpad cable connector 9. USH board connector 10.
  • Page 54 Steps NOTE: The system board can be removed and installed with the thermal module attached in order to simplify the procedure and preserve the thermal bond between the system board and heat-sink. In order to do so, technicians must also remove the two (M2x5) screws the secure the system fan to the system board.

  • Page 55: Power-Button Board

    1. 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. 2. Replace the four (M2x3) screws to secure the system board to the palm-rest assembly and keyboard assembly. 3.

  • Page 56: Installing The Power-Button Board

    NOTE: The system board can be removed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink. The following images indicate the location of the power-button board and provide a visual representation of the removal procedure.

  • Page 57: Smart Card Reader

    Steps 1. Align and place the power-button board on the palm-rest assembly. 2. Replace the two (M2x2.5) screws that secure the power-button board to the palm-rest assembly. Next steps 1. Install the system board. NOTE: The system board can be installed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink.
  • Page 58 3. Remove the card. 4. Remove the microSD card. 5. Remove the base cover. 6. Remove the 2280 solid-state drive 2230 solid-state drive. 7. Remove the WLAN card. 8. Remove the WWAN card. 9. Remove the battery. 10. Remove the assembly inner frame.

  • Page 59: Installing The Smart Card Reader

    Installing the smart card reader 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 smart card reader and provides a visual representation of the installation procedure.

  • Page 60: Coin-Cell Battery

    5. Install the WLAN card. 6. Install the base cover. 7. Install the microSD card. 8. Install the card. 9. Follow the procedure in After working inside your computer. Coin-cell battery Removing the coin-cell battery Prerequisites 1. Follow the procedure in Before working inside your computer.

  • Page 61: Installing The Coin-Cell Battery

    Steps 1. Disconnect the coin-cell battery cable from the connector. 2. Remove the coin-cell battery from the palm-rest assembly. Installing the coin-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 coin-cell battery and provides a visual representation of the installation procedure.

  • Page 62: Keyboard Assembly

    Steps 1. Adhere the coin-cell battery to the slot on the palm-rest assembly. 2. Connect the coin-cell battery cable to the connector. Next steps 1. Install the board. 2. Install the power-button board. 3. Install the SIM-card slot filler for models shipped without a WWAN card. 4.
  • Page 63 4. Remove the microSD card. 5. Remove the base cover. 6. Remove the memory module. 7. Remove the 2280 solid-state drive 2230 solid-state drive. 8. Remove the WLAN card. 9. Remove the WWAN card. 10. Remove the battery. 11. Remove the heat sink - discrete based on the system configuration.

  • Page 64: Installing The Keyboard Assembly

    Lift the latch and disconnect the keyboard cable and keyboard backlit cable (for models that are shipped with the keyboard backlight) from the touchpad. 2. Remove the eighteen (M2x2) screws that secure the keyboard assembly to the palm-rest. 3. Carefully lift the keyboard assembly from the palm-rest. 4.

  • Page 65: Keyboard Bracket

    Steps 1. Align and place the keyboard assembly on the palm-rest assembly. 2. Replace the eighteen (M2x2) screws that secure the keyboard assembly to the palm-rest. 3. Connect the keyboard cable and keyboard backlit cable to its connectors on the touchpad. NOTE: For models shipped with a USH module, connect the USH cable to the keyboard bracket.
  • Page 66 Steps 1. Remove the five (M2x2) screws that secure the keyboard to the keyboard bracket. 2. Remove the keyboard from the keyboard bracket. Removing and installing components...

  • Page 67: Installing The Keyboard Bracket

    Installing the keyboard bracket Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task NOTE: The system board can be installed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink.

  • Page 68: Display Assembly

    Steps 1. Align and place the keyboard on the keyboard bracket. 2. Replace the five (M2x2) screws to secure the keyboard to the keyboard bracket. Next steps 1. Install the keyboard assembly. 2. Install the system board. 3. Install the assembly inner frame.
  • Page 69 Removing and installing components...

  • Page 70: Installing The Display Assembly

    Steps 1. Remove the two (M2x3) screws that secure the eDP cable bracket to the system board. 2. Lift the eDP cable bracket away from the system. 3. Peel the tape that secures the display cable to the system board. 4.
  • Page 71 Removing and installing components...
  • Page 72 Removing and installing components...
  • Page 73 Steps 1. Place the display assembly on the system. Align the screw holes on the display hinges with screw holes on the palm-rest assembly. 2. Replace the four (M2.5x5) screws that secure the display hinges to the palm-rest assembly. 3. Close the display. 4.

  • Page 74: Display Bezel

    12. Replace the two screws (M2x3) that secure the eDP cable bracket to the system board. 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.

  • Page 75: Installing The Display Bezel

    Steps NOTE: The display bezel is adhered to the display panel with adhesive. Insert a plastic scribe into the recesses near both hinge caps to start the prying process to release the display bezel. Pry along the outside edge of the display bezel and work your way around the entire display bezel until the display bezel is separated from the display cover.

  • Page 76: Display Panel

    5. Install the microSD card. 6. Install the card. 7. Exit Service Mode. 8. Follow the procedure in After working inside your computer. Display panel Removing the display panel Prerequisites 1. Follow the procedure in Before working inside your computer. 2.
  • Page 77 Removing and installing components...
  • 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 two screws (M2.5x3) 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.
  • Page 80 About this task The following images indicate the location of the display panel and provide a visual representation of the installation procedure. Removing and installing components...
  • Page 81 Removing and installing components...
  • Page 82 Removing and installing components...
  • Page 83 Steps 1. Connect the display cable to the connector on the display panel and close the latch. 2. Adhere the clear tape to cover the display cable connector. 3. Adhere the conductive tape to secure the display cable to the display panel. 4.

  • Page 84: Camera/Microphone Module

    Camera/microphone module Removing the camera 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. Remove the display bezel.

  • Page 85: Removing The Infrared Camera

    About this task The following image indicates the location of the camera and provides a visual representation of the installation procedure. Steps 1. Align and place the camera module into the slot on the display back cover. 2. Connect the camera cable to the connector on the camera module. 3.

  • Page 86: Installing The Infrared Camera

    Steps 1. Peel the tape that secures the infrared camera cable. NOTE: An abrupt peeling may also remove the camera shutter from the display bezel and damage the camera shutter. 2. Lift the latch and disconnect the infrared camera cable from the connector on the camera module. 3.

  • Page 87: Edp/Display Cable

    Steps 1. Align and place the infrared camera module into the slot on the display back cover. 2. Connect the infrared camera cable to the connector on the camera module. 3. Adhere the tape to secure the infrared camera cable in place. Next steps 1.

  • Page 88: Installing The Edp Cable

    About this task The following images indicate the location of the eDP cable and provide a visual representation of the removal procedure. 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.
  • Page 89 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 90: Sensor Board

    Sensor board Removing the sensor 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 91: 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 92: Installing The Display Hinges

    About this task The following images indicate the location of the display hinges and provide a visual representation of the removal procedure. Steps 1. Remove the two (M2.5x5) screws that secure the right hinge to the display back cover. 2. Lift and remove the right hinge from the display back cover. 3.
  • Page 93 Steps 1. Align the screw hole on the left hinge with the screw hole on the display back cover. 2. Replace the two (M2.5x5) screws 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 94: 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 WLAN card.

  • Page 95: Installing The Display Back Cover

    Installing the display back cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the display back cover and provides a visual representation of the installation procedure.

  • Page 96: Dummy Sim-Card Slot Filler

    Dummy SIM-card slot filler Removing the dummy SIM-card slot filler 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 memory module.

  • Page 97: Installing The Dummy Sim-Card Slot Filler

    Steps 1. Push the dummy SIM-card slot filler from the top side of the palm-rest assembly. 2. Gently lift the dummy SIM-card slot filler out of the palm-rest assembly. Installing the dummy SIM-card slot filler Prerequisites If you are replacing a component, remove the necessary component before the installation procedure. About this task The following image indicates the location of the dummy SIM-card slot filler and provides a visual representation of the dummy SIM-card slot filler installation procedure.
  • Page 98 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 99: Palm-Rest Assembly

    Palm-rest assembly Removing the palm-rest assembly 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 memory module. 7.

  • Page 100: Installing The Palm-Rest Assembly

    Steps After performing the steps in the pre-requisites, we are left with the palm-rest assembly. Installing the palm-rest 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 assembly and provides a visual representation of the installation procedure. Removing and installing components...
  • Page 101 Steps NOTE: For non-WWAN LTE configuration, you must remove and transfer the dummy SIM-card filler when replacing the palm-rest assembly. 1. Place the palm-rest assembly on a flat surface. 2. Remove the dummy SIM card filler for the non-WWAN LTE configuration. Next steps 1.
  • Page 102 20. Follow the procedure in After working inside your computer. Removing and installing components...

  • Page 103: Chapter 3: Drivers And Downloads

    Downloading the drivers Steps 1. Turn on your computer. 2. Go to www.dell.com/support. 3. Enter the Service Tag of your computer, and then click Submit. NOTE: If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer model.

  • Page 104: Chapter 4: System Setup

    System 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: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information for future reference.

  • Page 105: Boot Sequence

    Boot sequence enables you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical drive or hard drive). During the Power-on Self-Test (POST), when the Dell logo appears, you can: ● Access System Setup by pressing F2 key ●...

  • Page 106: System Setup Options

    System setup options NOTE: Depending on your computer and its installed devices, the items listed in this section may or may not appear. Table 6. System setup options—System information menu Overview BIOS Version Displays the BIOS version number. Service Tag Displays the Service Tag of the computer.
  • Page 107 Table 6. System setup options—System information menu (continued) Overview Panel Type Displays the Panel Type of the computer. Privacy Screen Displays whether the privacy screen is installed or not in the computer. Video Controller Displays the video controller type of the computer. Video Memory Displays the video memory information of the computer.
  • Page 108 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 109 Table 9. System setup options—Storage menu (continued) Storage Enable SMART Reporting Enable or disable Self-Monitoring, Analysis, and Reporting Technology (SMART) during computer startup. By default, the Enable SMART Reporting option is not enabled. Drive Information M.2 PCIe SSD Type Displays the M.2 PCIe SSD type information of the computer. Device Displays the M.2 PCIe SSD device information of the computer.
  • Page 110 Enables to cool the fan and processor heat management to adjust the computer performance, noise, and temperature. 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. System setup...
  • Page 111 Table 12. System setup options—Power menu (continued) Power 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. By default, the Block Sleep option is disabled.
  • Page 112 By default, the option is disabled. Allow Non-Admin PSID Revert Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt. By default, the option is disabled. System setup...
  • Page 113 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 16. System setup options—System Management menu...
  • Page 114 Table 16. System setup options—System Management menu (continued) System Management USB Provision Enables or disable the Intel Active Management Technology to be provisioned using the local provisioning file using a USB storage device. Enable USB Provision By default, the option is disabled. Table 17.
  • Page 115 Table 19. System setup options—Virtualization menu (continued) Virtualization VT for Direct I/O Enable Intel VT for Direct I/O Specify whether a Virtual Machine Monitor (VMM) can utilize the additional hardware capabilities provided by Intel Virtualization Technology for Direct I/O. By default, the option is enabled. Intel Trusted Execution Technology (TXT) Enable Intel Trusted Execution...

  • Page 116: Updating The Bios In Windows

    If the recovery key is not known, this can result in data loss or an unnecessary operating system reinstall. For more information about this subject, see Knowledge Article: Updating the BIOS on Dell Systems With BitLocker Enabled System setup...

  • Page 117: Updating The Dell Bios In Linux And Ubuntu Environments

    4. Connect the bootable USB drive to the computer that needs the BIOS update. 5. Restart the computer and press F12 when the Dell logo is displayed on the screen. 6. Boot to the USB drive from the One Time Boot Menu.

  • Page 118: Deleting Or Changing An Existing System Setup Password

    ● Only the following special characters are allowed: space, (”), (+), (,), (-), (.), (/), (;), ([), (\), (]), (`). 3. Type the system password that you entered earlier in the Confirm new password field and click OK. 4. Press Esc and a message prompts you to save the changes. 5.

  • Page 119: 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 120: 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 121 Blinking Pattern Problem description Suggested resolution TPM detection failure Replace the system board. Unrecoverable SPI flash Replace the system board. failure EC unable to program i-Fuse Replace the system board. Generic catch-all for Disconnect all power source ungraceful EC code flow (AC, battery, coin cell) and errors drain flea power by pressing &...

  • Page 122: 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 123: Wifi Power Cycle

    WiFi power cycle About this task If your computer is unable to access the internet due to WiFi connectivity issues a WiFi power cycle procedure may be performed. The following procedure provides the instructions on how to conduct a WiFi power cycle: NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.

  • Page 124: Chapter 6: Getting Help

    About this task Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: Steps 1.

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