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Dell Latitude 7400 2-in-1 Service Manual
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Dell Latitude 7400 2-in-1 Service Manual

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Dell Latitude 7400 2-in-1
Service Manual
Regulatory Model: P110G
Regulatory Type: P110G001
August 2021
Rev. A03

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Summary of Contents for Dell Latitude 7400 2-in-1

  • Page 1 Dell Latitude 7400 2-in-1 Service Manual Regulatory Model: P110G Regulatory Type: P110G001 August 2021 Rev. A03...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2019 - 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 Turning off your computer — Windows 10........................6 Before working inside your computer..........................7 After working inside your computer..........................7 Chapter 2: Technology and components..................8 USB features..................................8 USB Type-C..................................10 HDMI 1.4a....................................11 Corning Gorilla Glass.................................
  • Page 4 Installing the fan................................48 Speakers....................................52 Removing the speakers..............................52 Installing the speakers..............................53 Heatsink....................................55 Removing the heatsink.............................. 55 Installing the heatsink..............................59 Display assembly................................63 Removing the display assembly..........................63 Installing the display assembly..........................66 Battery....................................68 Lithium-ion battery precautions..........................68 Removing the battery..............................69 Installing the battery..............................71 System board..................................73 Removing the system board.............................
  • Page 5 LCD Built-in Self Test (BIST)...........................117 System diagnostic lights..............................118 Recovering the operating system..........................118 Real-Time Clock (RTC Reset)............................119 Backup media and recovery options..........................119 WiFi power cycle................................119 Drain residual flea power (perform hard reset)......................119 Chapter 7: Getting help......................121 Contacting Dell..................................121 Contents...

  • Page 6: Chapter 1: Working On Your Computer

    Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

  • Page 7: Before Working Inside Your Computer

    Steps 1. Click or tap 2. Click or tap and then click or tap Shut down. NOTE: Ensure that the computer and all attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, press and hold the power button for about 6 seconds to turn them off.

  • Page 8: Chapter 2: Technology And Components

    Technology and components This chapter details the technology and components available in the system. Topics: • USB features • USB Type-C • HDMI 1.4a • Corning Gorilla Glass USB features Universal Serial Bus, or USB, was introduced in 1996. It dramatically simplified the connection between host computers and peripheral devices like mice, keyboards, external drivers, and printers.
  • Page 9 ● An additional physical bus that is added in parallel with the existing USB 2.0 bus (refer to the picture below). ● USB 2.0 previously had four wires (power, ground, and a pair for differential data); USB 3.0/USB 3.1 Gen 1 adds four more for two pairs of differential signals (receive and transmit) for a combined total of eight connections in the connectors and cabling.

  • Page 10: Usb Type-C

    USB Type-C USB Type-C is a new, tiny physical connector. The connector itself can support various exciting new USB standards like USB 3.1 and USB power delivery (USB PD). Alternate Mode USB Type-C is a new connector standard that is very small. It is about a third the size of an old USB Type-A plug. This is a single connector standard that every device should be able to use.

  • Page 11: Hdmi 1.4A

    Thunderbolt 3 over USB Type-C Thunderbolt 3 brings Thunderbolt to USB Type-C at speeds up to 40 Gbps, creating one compact port that does it all - delivering the fastest, most versatile connection to any dock, display or data device like an external hard drive. Thunderbolt 3 uses a USB Type-C connector/port to connect to supported peripherals.

  • Page 12: Corning Gorilla Glass

    ● Automotive Connection System - New cables and connectors for automotive video systems, designed to meet the unique demands of the motoring environment while delivering true HD quality. Advantages of HDMI ● Quality HDMI transfers uncompressed digital audio and video for the highest, crispest image quality. ●...
  • Page 13 Properties Table 3. Properties Density 2.43 g/cm Youngs Modulus 76.7 GPa Poissons Ratio 0.21 Shear Modulus 31.7 GPa Vickers Hardness (200 g load) ● Un-strengthened 489 kgf/mm ● Strengthened 596 kgf/mm 596 kgf/mm Fracture Toughness 0.69 MPa m Coefficient of Expansion (0 ˚C - 300 ˚C) 78.8 x 10 /°C Chemical Strengthening...
  • Page 14 Electrical Table 6. Electrical Frequency (MHz) Dielectric Constant Loss Tangent 7.08 0.009 7.01 0.010 7.01 0.011 7.00 0.010 7.99 0.010 7.97 0.011 7.01 0.012 1499 6.99 0.012 1977 6.97 0.014 2466 6.96 0.014 2986 6.96 0.014 Terminated coaxial line similar to that outlined in NIST Technical Notes 1520 and 1355-R Putting Corning Gorilla Glass 5 to the test.

  • Page 15: Chapter 3: Major Components Of Your System

    Major components of your system 1. Base cover 2. Heatsink shield Major components of your system...
  • Page 16 15. SSD shield 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 17: Chapter 4: Removing And Installing Components

    The #0 screw driver is for screws 0-1 and the #1 screw driver is for screws 2-4. Screw List The following table shows the screw list and the images for Dell Latitude 7400 2-in-1, for different components and locations. Table 7. Screw Size List...

  • Page 18: Sd Memory Card

    Table 7. Screw Size List (continued) Component Screw type Quantity Image WWAN card M2x2 M2x2 Speakers M1.6x1.4 Heatsink M1.6x2.5 Display assembly M2.5x3.5 ● M1.6x4.5 ● 1 Battery ● M2x3 ● 4 ● ● ● M2x2 ● 2 System board ● ●...

  • Page 19: Installing The Sd Memory Card

    Installing the SD memory card Steps Insert the SD memory card into its slot [1] until it clicks into place [2]. Removing and installing components...

  • Page 20: Sim Card Tray

    SIM card tray Removing the SIM card tray NOTE: This procedure applies for models that are shipped with WWAN card only. Steps 1. Insert a paperclip or a SIM card removal tool into the pinhole on the SIM card tray [1]. 2.

  • Page 21: Installing The Sim Card Tray

    Installing the SIM card tray Steps Install the SIM card tray into its slot on the computer [1] and push to lock it in place [2]. Removing and installing components...

  • Page 22: Base Cover

    Base cover Removing the base cover Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the SD memory card. Steps 1. Loosen the 10 captive screws that secure the base cover to the computer. Removing and installing components...
  • Page 23 2. Use a plastic scribe [1] to pry the base cover along the recess points located in the hinge indents as shown in the image. 3. Pry the base cover along the edges from the top side [2] to separate the base cover from the computer [2]. CAUTION: Do not pull on the base cover from the top side immediately after prying it open from the recesses as it can damage the base cover.
  • Page 24 4. Pry along the left, right and bottom edges of the base. Removing and installing components...
  • Page 25 5. Slide the base cover outwards before removing it off the computer and then life the base cover off the computer. Removing and installing components...

  • Page 26: Installing The Base Cover

    Installing the base cover Steps 1. Slide in base cover and place it on the computer. Removing and installing components...
  • Page 27 2. Press along the edges of the base cover until it clicks into place. Removing and installing components...
  • Page 28 3. Tighten the 10 captive screws to secure the base cover to the computer. Removing and installing components...
  • Page 29 4. Press the two highlighted middle area of the system as shown in the image after the screws are secured to complete the installation process. Removing and installing components...

  • Page 30: Battery Cable

    Next steps 1. Install the SD memory card. 2. Follow the procedure in after working inside your computer. Battery cable Disconnecting the battery cable Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the SD memory card.

  • Page 31: Connecting The Battery Cable

    Connecting the battery cable Steps Connect the battery cable to the connector on the system board. Removing and installing components...

  • Page 32: Coin Cell

    Next steps 1. Install the base cover. 2. Install the card. 3. Install the SD memory card. 4. Follow the procedure in after working inside your computer. Coin cell Removing the coin cell battery Prerequisites 1. Follow the procedure in before working inside your computer.

  • Page 33: Installing The Coin-Cell Battery

    Installing the coin-cell battery Steps 1. Affix the coin-cell battery to the system [1]. 2. Connect the coin-cell battery cable to the connector on the system board [2]. Removing and installing components...

  • Page 34: Solid State Drive

    Next steps 1. Connect the battery cable 2. Install the base cover. 3. Install the SD memory card. 4. Follow the procedure in after working inside your computer. Solid state drive Removing the solid state drive Prerequisites 1. Follow the procedure in before working inside your computer.
  • Page 35 2. Remove the single (M2x2) screw [1] that secures the SSD shield to the system board. 3. Lift to remove the SSD shield from the system board [2]. Removing and installing components...

  • Page 36: Installing The Solid State Drive

    4. Slide and remove the SSD module from the connector on the system board. Installing the solid state drive Steps 1. Align and slide the solid state drive (SSD) module into the connector on the system board. Removing and installing components...
  • Page 37 2. Place the SSD shield on the SSD module [1] and replace the single (M2x2) screw [2] to secure it to the system board. 3. Affix the black tape [1] and the metal foil [2] to secure the SSD shield in place. Removing and installing components...

  • Page 38: Wlan Card

    Next steps 1. Connect the battery cable 2. Install the base cover. 3. Install the SD memory card. 4. Follow the procedure in after working inside your computer. WLAN card Removing the WLAN card Prerequisites 1. Follow the procedure in before working inside your computer.

  • Page 39: Installing The Wlan Card

    Installing the WLAN card Steps 1. Slide the WLAN card [1] at an angle into the WLAN card connector on the system board. 2. Connect the WLAN antenna card cables [2] to the connector on the WLAN card. 3. Align the screw hole on the WLAN card bracket with the screw hole on the WLAN card [3]. 4.

  • Page 40: Wwan Card

    Next steps 1. Connect the battery cable 2. Install the base cover. 3. Install the SD memory card. 4. Follow the procedure in after working inside your computer. WWAN card Removing the WWAN card Prerequisites 1. Follow the procedure in before working inside your computer.
  • Page 41 2. Remove the single (M2x2) screw [1] that secures the WWAN bracket to the WWAN card. 3. Remove the WWAN bracket [2] from the WWAN card. 4. Disconnect the wireless antennae cables [3] from the connectors on the WWAN card. 5.

  • Page 42: Installing The Wwan Card

    Installing the WWAN card Steps 1. Slide the WWAN card [1] at an angle into the WWAN card connector on the system board. 2. Connect the WWAN antenna cables [2] to the connector on the WWAN card. 3. Align the screw hole on the WWAN card bracket with the screw hole on the WWAN card [3]. 4.
  • Page 43 5. Place the metal shield on the WWAN card. Removing and installing components...

  • Page 44: Fan

    NOTE: For the Latitude 7400 2-in-1 model shipped with a WWAN card, there is an L-shaped bracket (P-sensor bracket) that covers the four WWAN LTE antenna cable connections to the system board. The screw that secures the bracket to the system also helps secure the fan to the system.
  • Page 45 2. Disconnect the fan cable [1] from the connector on the system board [1]. 3. Partially peel off the metal foil [2] and the black tape [3] on the SSD shield. Removing and installing components...
  • Page 46 4. Remove the single (M2x2) screw [1] that secures the WWAN P-sensor bracket to the system board. 5. Remove the WWAN P-sensor bracket [2] from the system board. 6. Partially peel off the padded gasket [1] from the fan case. 7.
  • Page 47 CAUTION: There are cushions, partially obstructing the palmrest, on the bottom side of the fan. Technicians should not lift the fan directly up, as it may damage the fan. Partially lift the left side of the fan and slide it to the left to remove it from the computer. Removing and installing components...

  • Page 48: Installing The Fan

    About this task For the Latitude 7400 2-in-1 model shipped with a WWAN card, there is an L-shaped bracket (P-sensor bracket) that covers the four WWAN LTE antenna cable connections to the system board. The screw that secures the bracket to the system also helps secure the fan to the system.
  • Page 49 2. Replace the single (M2x2) screw [1] to secure the fan to the system board. 3. Adhere the padded rubber gasket [2] on the fan case. Removing and installing components...
  • Page 50 4. Align the screw holes on the WWAN P-sensor bracket [1] with the screw hole on the fan. 5. Replace the single (M2x2) screw [2] to secure the WWAN P-sensor bracket to the fan. 6. Connect the fan cable [1] to the connector on the system board. 7.
  • Page 51 8. Adhere the Mylar sheet on the system board. Removing and installing components...

  • Page 52: Speakers

    Next steps 1. Connect the battery cable 2. Install the base cover. 3. Install the SD memory card. 4. Follow the procedure in after working inside your computer. Speakers Removing the speakers Prerequisites 1. Follow the procedure in before working inside your computer.

  • Page 53: Installing The Speakers

    Installing the speakers Steps 1. Align the screw holes on the speakers [1] with the screw holes on the chassis 2. Replace the three (M1.6x1.4) screws [2] that secure the speakers to the chassis. Removing and installing components...
  • Page 54 3. Connect the speaker cable [1] to the connector on the system board and adhere the speaker flex cable [2] on the battery. Removing and installing components...

  • Page 55: Heatsink

    Next steps 1. Connect the battery cable 2. Install the base cover. 3. Install the SD memory card. 4. Follow the procedure in after working inside your computer. Heatsink Removing the heatsink Prerequisites 1. Follow the procedure in before working inside your computer.
  • Page 56 4. Remove the metal foil from the heatsink shield. Removing and installing components...
  • Page 57 5. Remove the heatsink shield from the system board. Removing and installing components...
  • Page 58 6. Remove the four (M1.6x2.5) screws [1] that secure the heatsink on the system board. 7. Lift the heatsink [2] off the system board. Removing and installing components...

  • Page 59: Installing The Heatsink

    Installing the heatsink Steps 1. Align the screw holes on the heatsink [1] with the screw holes on the system board. 2. Replace the four (M1.6x2.5) screws [2] that secure the heatsink to the system board. Removing and installing components...
  • Page 60 3. Place the heatsink shield on the heatsink. Removing and installing components...
  • Page 61 4. Adhere the metal foils on the heatsink shield. Removing and installing components...
  • Page 62 5. Adhere the camera and touch screen FPC cables on the heatsink shield [1]. 6. Connect the camera and touch screen FPC cables [2] to the connector on the system board. 7. Adhere the Mylar sheet [3] on the system board. Removing and installing components...

  • Page 63: Display Assembly

    Next steps 1. Connect the battery cable 2. Install the base cover. 3. Install the SD memory card. 4. Follow the procedure in after working inside your computer. Display assembly Removing the display assembly Prerequisites 1. Follow the procedure in before working inside your computer.
  • Page 64 4. Peel off the tape on the display cable [1]. 5. Pry the retention clips on both sides and flip open the latch [2]. CAUTION: The connector for the display cable features a latch that locks it in place on the system board which technicians must flip open in order to disconnect the display cable from the system board.
  • Page 65 7. Remove the six (M2.5x3.5) screws [1] that secures the display hinges to the computer. 8. Lift the display assembly off the computer [2]. Removing and installing components...

  • Page 66: Installing The Display Assembly

    NOTE: The display assembly for the Latitude 7400 2-in-1 is a Hinge-Up Design (HUD) assembly and cannot be further disassembled once it is removed from the bottom chassis. If any components of the HUD assembly are malfunctioning and need to be replaced, replace the entire display assembly.
  • Page 67 5. Route the camera and touch screen FPC and adhere it on the heatsink shield [1]. 6. Connect the camera and touch screen FPC to the connector on the system board [2] and stick the Mylar sheet on the system board [3]. Removing and installing components...

  • Page 68: 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 69: Removing The Battery

    ● Always purchase genuine batteries from www.dell.com or authorized Dell partners and resellers. Removing the battery Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the SD memory card. 3. Remove the base cover. 4. Disconnect the battery cable.
  • Page 70 Figure 3. 4-cell battery NOTE: A 6-cell battery has an extra M2x4 screw shown in green. Remove the screw before removing the battery from the computer. Table 8. Battery screw description Size Amount Yellow M2x3L 4-cell battery M1.6x4.5L 6-cell battery Green M2x4L Removing and installing components...

  • Page 71: Installing The Battery

    Figure 4. 6-cell battery Installing the battery Steps 1. Align the screw holes on the battery with the screw holes on the palmrest assembly [1]. 2. Replace the four (M2x3) screws and single (M1.6x4.5) screw that secure the battery to the palmrest assembly [2]. Removing and installing components...
  • Page 72 NOTE: Install the extra M2x4 screw for 6-cell battery. The screw is shown in green, in the battery disassembly section. 3. Stick the tape on wireless antennae cable securing it to the battery [1]. 4. Thread the antennae cables along the routing channels and supporting bracket on the battery [2]. 5.

  • Page 73: System Board

    Next steps 1. Connect the battery cable 2. Install the base cover. 3. Install the SD memory card. 4. Follow the procedure in after working inside your computer. System board Removing the system board Prerequisites 1. Follow the procedure in before working inside your computer.
  • Page 74 Steps 1. Disconnect the coin cell cable from the system board [1] and remove the coin cell from the system board [2]. After removing all brackets and disconnecting all cables, there are five screws that secure the system board to the palmrest. One of the screw is covered by the Real Time Clock (RTC) battery.
  • Page 75 8. Remove the single (M2x2) screw [1] securing the power fingerprint bracket to system board. 9. Remove the power fingerprint bracket [2] and disconnect the cable from the system board [3]. 10. Disconnect the LTE P-sensor and isolator antenna cables [4] from the system board. 11.
  • Page 76 12. Remove the single (M2x2) screw [1] and remove the SSD bracket from the system board [2]. 13. Remove the two (M2x4) screws [3] and remove the USB Type-C bracket [4] from the system board. Removing and installing components...
  • Page 77 CAUTION: For models shipped with no LTE support, the dummy SIM card tray must first be removed from the system before removing the system board. Remove the five (M2x3) screws [1] and remove the system board from the computer [2]. NOTE: Lifting the system board from the thin middle portion might damage the board.

  • Page 78: Installing The System Board

    Installing the system board Steps 1. Install the system board in the computer [1] and install the five (M2x3) screws securing it to the computer. NOTE: After removing all brackets and disconnecting all cables, there are five screws that secure the system board to the palmrest.
  • Page 79 2. Install the USB Type-C bracket [1] on the system board and secure it using two (M2x4) screws [2] on the system board. 3. Install the SSD bracket [3] and secure it using a single (M2x2) screw [4] to the system board. Removing and installing components...
  • Page 80 4. Connect the Power button/fingerprint reader cable to the system board [1]. 5. Install the power button/finger print reader bracket [2] on the system board and secure it using the single (M2x2) screw [3]. 6. Connect the LTE P-sensor and isolator antenna cables [4] on the system board. 7.
  • Page 81 8. Connect the following power button cable to the system board [1]. 9. Connect the USH board cable [2] and keyboard with backlight cable [3] to the system board. 10. Connect the touchpad cable [4] and LED board cable [5] to the system board. Removing and installing components...
  • Page 82 11. Install the coin cell [1] on the system board and connect its cable to the system board [2]. 12. Connect the display cable to the system board [3] and flip close the actuator [4]. 13. Secure the display cable connector by sticking the tape on the system board [5]. Removing and installing components...

  • Page 83: Keyboard

    Next steps 1. Install the battery. 2. Install the heatsink 3. Install the speaker. 4. Install the fan. 5. Install the WWAN card. 6. Install the WLAN card. 7. Install the SSD. 8. Install the coin cell 9. Connect the battery cable 10.
  • Page 84 4. Disconnect the battery cable. 5. Remove the coin cell. 6. Remove the SSD. 7. Remove the WLAN card. 8. Remove the WWAN card. 9. Remove the fan. 10. Remove the speakers. 11. Remove the battery. 12. Remove the heatsink. 13.
  • Page 85 4. Remove the two (M1.6x1.5) screws [1] to remove the middle battery bracket [2] from the computer. 5. Peel off the keyboard and backlight FPC cables from the keyboard [3]. 6. Remove the single (M1.6x1.5) screw [4] to remove the left battery bracket [5] from the computer. Removing and installing components...
  • Page 86 7. Remove the 40 (M1.6x1.5) screws that secure the keyboard to the palmrest assembly. Several of the screws are covered by the touchpad flexible flat cable, LED flexible flat cable (FFC), keyboard flexible printed circuit (FPC), and copper foil. Technicians must peel back these FFC/FPC/foil in order to access the keyboard screws. Removing and installing components...
  • Page 87 8. Lift the keyboard off the palmrest assembly. Removing and installing components...

  • Page 88: Installing The Keyboard

    Installing the keyboard Steps 1. Place the keyboard on the palmrest assembly. Removing and installing components...
  • Page 89 2. Replace the 40 (M1.6x1.5) screws on the keyboard to secure it to the palmrest assembly. Several of the screws are covered by the touchpad flexible flat cable, LED flexible flat cable (FFC), keyboard flexible printed circuit (FPC), and copper foil. Technicians must peel back these FFC/FPC/foil in order to access the keyboard screws.
  • Page 90 3. Install the middle battery bracket [1] and secure it using two (M1.6x1.5) screws [2]. 4. Stick the keyboard and backlight FPC cables to the keyboard [3]. 5. Install left battery bracket [4] and secure it using single (M1.6x1.5) screw [5]. Removing and installing components...
  • Page 91 6. Stick the two pieces of LTE antenna module copper foil [1, 3] and LTE AUX cable on the keyboard [2]. 7. Route and stick the smart card FPC cable [4] on the keyboard and connect it to the USH board [5]. Removing and installing components...

  • Page 92: Palmrest Assembly

    8. Stick the USH board cable [1], touchpad cable [2], and LED board cable [3] on the keyboard base. Next steps 1. Install the system board 2. Install the battery. 3. Install the heatsink 4. Install the speaker. 5. Install the fan. 6.
  • Page 93 7. Remove the WLAN card. 8. Remove the WWAN card. 9. Remove the fan. 10. Remove the speakers. 11. Remove the heatsink. 12. Remove the display assembly. 13. Remove the battery. 14. Remove the system board. 15. Remove the keyboard. Steps 1.
  • Page 94 5. Install the heatsink 6. Install the speaker. 7. Install the fan. 8. Install the WWAN card. 9. Install the WLAN card. 10. Install the SSD. 11. Install the coin cell 12. Connect the battery cable 13. Install the base cover.

  • Page 95: Chapter 5: System Setup

    Boot menu Press <F12> when the Dell logo appears to initiate a one-time boot menu with a list of the valid boot devices for the system. Diagnostics and BIOS Setup options are also included in this menu. The devices listed on the boot menu depend on the bootable devices in the system.

  • Page 96: Navigation Keys

    Boot Sequence allows 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 97: System Setup Options

    NOTE: XXX denotes the SATA drive number. ● Optical Drive (if available) ● SATA Hard Drive (if available) ● Diagnostics NOTE: Choosing Diagnostics, will display the ePSA diagnostics screen. The boot sequence screen also displays the option to access the System Setup screen. System setup options NOTE: Depending on the laptop and its installed devices, the items listed in this section may or may not appear.

  • Page 98: System Configuration

    USB keyboard and mouse always work in the BIOS setup irrespective of these settings. Dell Type-C Dock Configuration Allows you to connect to Dell WD and TB family of docks(Type-C Docks) independent of USB and thunderbolt adapter configuration. This option is enabled by default.
  • Page 99 Table 10. System Configuration (continued) Option Description ● Native Enumeration: The BIOS will program the Thunderbolt controller to Native mode ( Auto Switching is disabled) ● BIOS Assist Enumeration: The BIOS will program the Thunderbolt controller to BIOS Assist mode ( Auto Switching is disabled) NOTE: A reboot is required for these changes to take...

  • Page 100: Video Screen Options

    Table 10. System Configuration (continued) Option Description Touchscreen This option controls whether the touchscreen is enabled or disabled This option is enabled by default. Unobtrusive Mode When enabled, pressing Fn+F7 will turn off all light and sound emission in the system. Press Fn+F7 to resume normal operation.
  • Page 101 Table 12. Security (continued) Option Description ● Enter the old password: ● Enter the new password: ● Confirm new password: Click OK once you set the password. NOTE: For the first time login, "Enter the old password:" field is marked to "Not set". Hence, password has to be set for the first time you login and then you can change or delete the password.

  • Page 102: Secure Boot

    Table 12. Security (continued) Option Description ● Enable ● One Time Enable ● Disable Admin Setup Lockout Allows you to prevent users from entering Setup when an administrator password is set. ● Enable Admin Setup Lockout This option is not set by default. Master Password Allows you to disable master password support.

  • Page 103: Intel Software Guard Extensions Options

    Intel Software Guard Extensions options Table 14. Intel Software Guard Extensions Option Description Intel SGX Enable This field specifies you to provide a secured environment for running code/storing sensitive information in the context of the main OS. Click one of the following options: ●...

  • Page 104: Power Management

    Allows you to select the charging mode for the battery. Configuration The options are: ● Adaptive—Default ● Standard - Fully charges your battery at a standard rate. ● ExpressCharge- The battery charges over a shorter period of time using Dell’s fast charging technology. ● Primarily AC use System setup...

  • Page 105: Post Behavior

    Table 16. Power Management (continued) Option Description ● Custom If Custom Charge is selected, you can also configure Custom Charge Start and Custom Charge Stop. NOTE: All charging mode may not be available for all the batteries. Post behavior Table 17. POST Behavior Option Description Adapter Warnings...

  • Page 106: Manageability

    Table 17. POST Behavior (continued) Option Description Sign of Life Indicator This option allows system to indicate during the POST that the power button has been acknowledged in a manner the user can either hear or feel. ● Enable Sign of Life Audio Indication ●...

  • Page 107: Maintenance

    Table 20. Wireless (continued) Option Description ● Bluetooth® All the options are enabled by default. Wireless Device Enable Allows you to enable or disable the internal wireless devices. The options are: ● WWAN/GPS ● WLAN ● Bluetooth® ● Contactless Smartcard/ NFC All the options are enabled by default.

  • Page 108: Updating The Bios

    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. You can also use the product ID or manually browse for your computer model.

  • Page 109: 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 110: Assigning A System Setup Password

    CAUTION: The password features provide a basic level of security for the data on your computer. CAUTION: Anyone can access the data that is stored on your computer if it is not locked and left unattended. NOTE: System and setup password feature is disabled. Assigning a system setup password Prerequisites You can assign a new System or Admin Password only when the status is in Not Set.

  • Page 111: Clearing Bios (System Setup) And System Passwords

    ExpressSign-in On Dell Latitude systems, the proximity sensor is accessed when the system is ON or in the sleep mode. The valid state of the proximity sensor is Near, and Enable with external monitor. The proximity feature is automatically disabled while the laptop is in the On state, and the remaining battery of the laptop is less than 30 minutes.
  • Page 112 ExpressSign-in user interface in external monitor usage state When one or more external monitor(s) are connected to the system and Near or Away state is enabled, the Dell ExpressSign- inwindow is displayed on the primary monitor, and you can select Yes or No to enable or disable the proximity sensor.
  • Page 113 Lock timer The lock timer is the approximate time for Dell Express Sign-in to identify that the user is no longer in front of the system or within the FoV. This feature will recognize your physical absence and lock the system.
  • Page 114 Table 28. Supported hinge angles (continued) System with status Supported hinge angle Illustration Tent Not supported System setup...

  • Page 115: 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 116: Enhanced Pre-Boot System Assessment (Epsa) Diagnostics

    Running the ePSA diagnostics 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 117: 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 118: System Diagnostic Lights

    ● Solid white — Caps Lock enabled. ● Off — Caps Lock disabled. Recovering the operating system When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell SupportAssist OS Recovery. Troubleshooting...

  • Page 119: 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 120 5. Press and hold the power button for 20 seconds to drain the flea power. 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, see the knowledge base article 000130881 www.dell.com/support. Troubleshooting...

  • Page 121: Chapter 7: 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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