Dell EMC Latitude 7520 Service Manual
  1. Manuals
  2. Brands
  3. Dell EMC Manuals
  4. Laptop
  5. Latitude 7520
  6. Service manual

Dell EMC Latitude 7520 Service Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Latitude 7520
Service Manual
Regulatory Model: P110F
Regulatory Type: P110F001
January 2021
Rev. A00

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Latitude 7520 and is the answer not in the manual?

Questions and answers

Related Manuals for Dell EMC Latitude 7520

Summary of Contents for Dell EMC Latitude 7520

  • Page 1 Latitude 7520 Service Manual Regulatory Model: P110F Regulatory Type: P110F001 January 2021 Rev. A00...
  • Page 2 Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

  • Page 3: Table Of Contents

    Contents Chapter 1: Working on your computer................... 6 Safety instructions................................6 Service mode.................................. 6 Before working inside your computer........................8 Safety precautions................................ 9 Electrostatic discharge—ESD protection....................... 9 ESD field service kit ..............................10 Chapter 2: Removing and installing components................11 Recommended tools................................11 Screw List.....................................11 Major components of your system..........................
  • Page 4 Speakers....................................45 Removing the speakers..............................45 Installing the speaker..............................46 Tweeters....................................47 Removing the tweeters..............................47 Installing the tweeters..............................48 Tweeters and palmrest antenna assembly........................50 Removing the tweeters and palmrest antenna assembly..................50 Installing the tweeters and palmrest antenna assembly..................52 Smart card reader................................54 Removing the smart card reader..........................54 Installing the smart card reader..........................55 Audio board..................................56 Removing the audio board............................
  • Page 5 Chapter 5: Troubleshooting......................89 Recovering the operating system..........................89 Backup media and recovery options..........................89 Dell SupportAssist Pre-boot System Performance Check diagnostics..............89 Running the SupportAssist Pre-Boot System Performance Check..............90 Diagnostic LED behavior..............................90 Real-Time Clock (RTC Reset)............................91 Flashing BIOS (USB key)..............................92 Flashing the BIOS................................92 WiFi power cycle................................

  • Page 6: Chapter 1: Working On Your Computer

    Working on your computer Topics: • Safety instructions Safety instructions Prerequisites Use the following safety guidelines to protect your computer from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that the following conditions exist: ●...
  • Page 7 3. [For models configured with an Owner Tag] When the Owner Tag information appears on the screen, press any key to proceed. NOTE: The Service Mode procedure will automatically skip this step if the Owner Tag of the system is not set up in advance by the manufacturer.

  • Page 8: Before Working Inside Your Computer

    5. 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. Once the system shuts down, you can perform replacement procedures without disconnecting the battery cable from the system board.

  • Page 9: Safety Precautions

    4. Disconnect all attached network devices and peripherals, such as keyboard, mouse, and monitor from your computer. CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device. 5. Remove any media card and optical disc from your computer, if applicable. Safety precautions The safety precautions chapter details the primary steps to be taken before performing any disassembly instructions.

  • Page 10: Esd Field Service Kit

    ● Use a wired ESD wrist strap that is properly grounded. The use of wireless anti-static straps is no longer allowed; they do not provide adequate protection. Touching the chassis before handling parts does not ensure adequate ESD protection on parts with increased sensitivity to ESD damage.

  • Page 11: Chapter 2: Removing And Installing Components

    Removing and installing components NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Topics: • Recommended tools • Screw List • Major components of your system • micro-SD card • SIM card tray •...
  • Page 12 Table 1. Screw list Component Screw type Quantity Image Base cover Captive screws NOTE: Screws are part of the base cover. Solid-state drive M2x2 WWAN M2x2.5 3-cell Battery M2.5x4 Captive screws 4-cell Battery M2.5x4 Captive screws Heatsink assembly M2x2.5 Speaker board M2x2.5 Display assembly M2x2...
  • Page 13 Table 1. Screw list (continued) Component Screw type Quantity Image M2x4 Power button with fingerprint reader M1.6x1.7 Keyboard M1.6x1.7 M2x2 Removing and installing components...

  • Page 14: Major Components Of Your System

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

  • Page 15: Micro-Sd Card

    2. Battery 3. I/O board 4. Heatsink 5. Speaker board 6. System board 7. Speakers 8. Audio board 9. Palmrest assembly 10. Display assembly 11. Fingerprint cable connector 12. Power button with fingerprint reader 13. SmartCard reader 14. Tweeters and palmrest antenna 15.

  • Page 16: Installing The Micro-Sd Card

    Installing the micro-SD 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 micro-SD card reader slot and provides a visual representation of the installation procedure.

  • Page 17: Installing The Sim Card Tray

    Installing the SIM card tray Prerequisites If you are replacing a component, remove the necessary component before the installation procedure. About this task The following image provides a visual representation of the SIM card tray installation procedure. Steps 1. Align and place the SIM card in the dedicated slot on the SIM card tray. 2.
  • Page 18 About this task Removing and installing components...

  • Page 19: Installing The Base Cover

    Steps 1. Loosen the eight captive screws that secure the base cover to the computer. 2. Use a plastic scribe to pry open the base cover, starting from the U-shaped recesses near the hinges at the top edge of the base cover.

  • Page 20: Solid-State Drive

    Steps 1. Align and place the base cover on the computer, and snap the base cover latches into place. 2. Tighten the eight captive screws to secure the base cover to the computer. Next steps 1. Install the microSD card. NOTE: Plug-in AC before powering up your computer.

  • Page 21: Installing The Solid-State Drive

    Steps 1. Remove the two screws (M2x2) that secure the SSD shield and remove the shield from the SSD. 2. Slide and remove the solid-state drive from the M.2 slot on the system board. NOTE: A thermal pad is included with the SSD plate and must always be adhered to the plate. If the thermal pad gets separated from the plate or is adhered to the SSD, stick back the thermal pad to the SSD plate before reinstalling the plate to the SSD.

  • Page 22: Wwan Card

    Steps 1. Align the notch on the SSD with the tab on the M.2 slot and slide the SSD into the M.2 card slot on the system board. 2. Replace the SSD shield, press to fit it firmly to cover the SSD, securing it with two (M2x2) screws. Next steps 1.
  • Page 23 Steps 1. Using a plastic scribe, pry and remove the WWAN card shield covering the WWAN card. NOTE: Pry open the WWAN card shield from the recess on the top left corner. 2. Loosen the single (M2x2.5) screw and remove the WWAN-card bracket. 3.

  • Page 24: 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 25: Battery

    Next steps 1. Install the base cover. 2. Install the microSD card. NOTE: Plug-in AC before powering up your computer. Follow the procedure in after working inside your computer. Battery Lithium-ion battery precautions CAUTION: ● Exercise caution when handling Lithium-ion batteries. ●...

  • Page 26: Removing The 4-Cell Battery

    About this task The following images indicate the location of the battery and provide a visual representation of the removal procedure. Steps 1. Disconnect the battery cable from the system board. 2. Disconnect the speaker cable from the speaker board and release the speaker cable from the routing guides over the upper right side of the battery.
  • Page 27 NOTE: If the battery is disconnected from system board, there is delay during computer boot as the computer undergoes RTC 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 28: 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 battery and provides a visual representation of the installation procedure. NOTE: If the battery is disconnected from system board, there is delay during computer boot as the computer undergoes RTC reset.

  • Page 29: Installing The 4-Cell Battery

    Next steps 1. Install the base cover. 2. Install the microSD card. 3. Follow the procedure in after working inside your computer. Installing the 4-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 battery and provides a visual representation of the installation procedure.

  • Page 30: Heatsink Assembly

    Steps 1. Align and place the battery into the computer. 2. Install the single (M2.5x4) screw and the four captive screws to secure the battery in place. 3. Connect the speaker cable to the speaker board and reroute the speaker cable into its routing channel over the upper right side of the battery.

  • Page 31: Installing The Heatsink Assembly

    2. Remove the two (M2x2.5) screws on the fan case and the four (M2x2.5) screws (in reverse order, 4->3->2->1) that secure the heatsink to the computer. 3. Lift the heatsink assembly from the computer. Installing the heatsink 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 location of the heatsink assembly and provides a visual representation of the installation procedure.

  • Page 32: Speaker Board

    Speaker board Removing the speaker board Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the microSD card. 3. Enter the service mode. 4. Remove the base cover. About this task The following images indicate the location of the speaker board and provide a visual representation of the removal procedure. Steps 1.

  • Page 33: Installing The Speaker Board

    Installing the speaker 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 speaker board and provides a visual representation of the installation procedure.

  • Page 34: Display Assembly

    Display assembly Removing the display assembly Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the microSD card. 3. Enter the service mode. 4. Remove the base cover. 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 35 Steps 1. Remove the two (M2x2) securing the display cable bracket to the system board. 2. Lift to remove the display cable bracket from the computer. 3. Disconnect the display, camera, touch screen, sensor board cables from the system board and release them from cable guiding tabs.

  • Page 36: Removing The Display Assembly (With Wlan Antenna)

    NOTE: NOTE: The display assembly is a Hinge-Up Design (HUD) assembly and cannot be further disassembled once it is removed from the bottom chassis. If any components in the display assembly are malfunctioning and must be replaced, replace the entire display assembly. Figure 1.
  • Page 37 Figure 2. Display assembly with WLAN antenna Removing and installing components...
  • Page 38 Figure 3. Display assembly with WLAN and WWAN antenna Removing and installing components...
  • Page 39 Steps 1. Remove the single (M2x2) securing the WLAN card bracket to the antenna cables. 2. Lift the bracket from the WLAN card module on the system board. 3. Disconnect the WLAN antenna cables from the WLAN module. 4. Disconnect the WWAN antenna cable and release the cable from the rubber guides on the system board. 5.

  • Page 40: Installing The Display Assembly

    Figure 4. Display assembly with antennae cables Figure 5. Display assembly with WLAN and WWAN antenna cables Installing the display assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. Removing and installing components...
  • Page 41 About this task The following image indicates the location of the display assembly and provides a visual representation of the installation procedure. Removing and installing components...

  • Page 42: Installing The Display Assembly (With Wlan Antenna)

    Steps 1. Align and place the display assembly at a convenient angle to the bottom chassis. 2. Replace the six (M2.5x5) screws securing the hinges to the bottom chassis. 3. Route the display cable along the guiding tabs and connect the display, camera, touch screen, sensor board cables to the system board.
  • Page 43 Removing and installing components...
  • Page 44 Figure 6. Display assembly without antenna cables Figure 7. Display assembly with WLAN and WWAN antenna cables Steps 1. Align and place the display assembly at a convenient angle to the bottom chassis. 2. Replace the six (M2.5x5) screws securing the hinges to the bottom chassis. Removing and installing components...

  • Page 45: Speakers

    3. Route the display cable along the guiding tabs and connect the display, camera, touch screen, sensor board cables to the system board. 4. Align and place the display cable bracket on the connector on the system board. 5. Install the two (M2x2) screws securing the display cable bracket to the system board. 6.

  • Page 46: Installing The Speaker

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

  • Page 47: Tweeters

    Tweeters Removing the tweeters Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the microSD card. 3. Enter the service mode. 4. Remove the base cover. 5. Remove the heatsink assembly. About this task The following images indicate the location of the tweeters and provide a visual representation of the removal procedure. Removing and installing components...

  • Page 48: Installing The Tweeters

    Steps 1. Remove the two (M2x2) screws securing the display cable bracket to the system board and disconnect the display cable. 2. Disconnect the camera, touch screen, sensor board cables from the system board and unroute them from the guiding tabs on the tweeters.
  • Page 49 Steps 1. Replace the tweeters into its slot in the palmrest assembly. 2. Adhere the tape securing the tweeter cable to the audio board FFC and I/O board. 3. Adhere the mylar tape securing the tweeter cable to the keyboard bracket and connect the tweeter cable to the audio board.

  • Page 50: Tweeters And Palmrest Antenna Assembly

    4. Route the display cable along the guiding tabs on the tweeters and connect the display, camera, touch screen and, sensor board cables to the system board. NOTE: For models shipped with a WLAN antenna in the display assembly, route the tweeter speaker cable along the top side of the palmrest assembly and secure it in place with tape.
  • Page 51 Steps 1. Remove the single (M2x2) screw securing the WLAN card bracket to the antenna cables and remove the bracket from the computer. Removing and installing components...

  • Page 52: Installing The Tweeters And Palmrest Antenna Assembly

    2. Disconnect the WLAN antenna cables from the WLAN module and unroute the cable from the guides on the system board. 3. Remove the two (M2x2) screws securing the display cable bracket to the system board and disconnect the display cable. 4.
  • Page 53 Steps 1. Adhere the tape securing the tweeter cable to the audio board FFC and I/O board. 2. Adhere the mylar tape securing the tweeter cable to the keyboard bracket and connect the tweeter cable to the audio board.. 3. Route the display cable along the guiding tabs on the tweeters. NOTE: When routing the tweeter cable, secure the speaker cable in place with the cut outs on the keyboard plate and mylar tape attached to the speaker cable.

  • Page 54: Smart Card Reader

    Smart card reader Removing the smart card reader Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the microSD card. 3. Remove the base cover. 4. Remove the battery. 5. Remove the speaker. About this task The following images indicate the location of the smart card reader and provide a visual representation of the removal procedure.

  • Page 55: Installing The Smart Card Reader

    Steps 1. Disconnect the touchpad module and peel the FFC cable from over the touchpad module. 2. Disconnect the smart card reader and NFC module cables from the USH board. 3. Remove the four (M2x2.5) screws and slide the smart card reader out from its slot in the chassis. Installing the smart card reader Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 56: Audio Board

    Steps 1. Slide the smart card reader into its slot in the computer chassis and secure it using the four (M2x2.5) screws. 2. Adhere the smart card reader and NFC module cable and connect it to the USH board. 3. Adhere the touchpad FFC cable along the sides of the touchpad module and connect it to the system board. Next steps 1.

  • Page 57: Installing The Audio Board

    About this task The following images indicate the location of the audio board and provide a visual representation of the removal procedure. Steps 1. Peel the tape securing the tweeter able to the audio board FFC and disconnect it from the audio board. 2.

  • Page 58: System Board

    Steps 1. Align and replace the audio board into its slot in the computer. 2. Replace the two (M2x2.5) screws to secure the audio board to the computer. 3. Connect the audio board FFC to the system board. 4. Adhere the tweeter cable to the audio board FFC and connect it to the audio board. Next steps 1.
  • Page 59 4. Remove the base cover. 5. Remove the solid-state drive. 6. Remove the heatsink assembly. CAUTION: Remove the heatsink assembly before removing the system board as there are two (M2x3) screws underneath the heatsink that secures the system board to the computer. NOTE: For configurations shipped with a carbon fiber palmrest and without WWAN antennas, the dummy SIM card tray must removed from the system before removing the system board.

  • Page 60: Installing The System Board

    Steps 1. Remove the single (M2x2.5) screw from the finger print reader bracket and remove the bracket from the computer. 2. Disconnect the fingerprint reader FPC from the system board. 3. Remove the single (M2x2) screw and lift the bracket from the antenna cables. 4.
  • Page 61 Removing and installing components...
  • Page 62 Steps 1. Replace the system board into the computer chassis and tighten it using the four (M2x2.5) screws (for computer configuration with fingerprint reader on power button) or five (M2x2.5) screws (for computer configuration without fingerprint reader), two M2x4 screws, and two M2x3 screws securing the system board in place. 2.

  • Page 63: I/O Board

    I/O board Removing the I/O board Prerequisites 1. Follow the procedure in before working inside your computer. 2. Enter the service mode. 3. Remove the microSD card. 4. Remove the card. 5. Remove the base cover. 6. Remove the solid-state drive.

  • Page 64: Power Button With Fingerprint Reader

    About this task The following image indicates the location of the I/O board and provides a visual representation of the installation procedure. Steps 1. Replace the I/O board into its slot in the computer. 2. Secure the I/O board to the computer using the single (M2x2.5) screw and two (M2x4) screws. Next steps 1.

  • Page 65: Installing The Power Button With Fingerprint Reader

    6. Remove the solid-state drive. 7. Remove the heatsink assembly. 8. Remove the system board. About this task The following images indicate the location of the power button with fingerprint reader and provide a visual representation of the removal procedure. Steps 1.

  • Page 66: Keyboard

    Steps 1. Replace the power button with fingerprint reader into its slot in the computer. 2. Secure the power button with fingerprint reader to the computer using the two (M1.6x1.7) screws. Next steps 1. Install the system board. 2. Install the heatsink assembly.
  • Page 67 9. Remove the audio board. 10. Remove the system board. 11. Remove the board. About this task The following images indicate the location of the keyboard and provide a visual representation of the removal procedure. Removing and installing components...

  • Page 68: Installing The Keyboard

    Steps 1. Peel the LED board FFC, USH board FFC, touchpad FFC and SmartCard reader FFC from the back of the keyboard. 2. Disconnect the keyboard FPC and keyboard backlight FPC from the touchpad module. 3. Remove the 20 (M1.6x1.7) screws that secure the keyboard assembly to the computer. 4.
  • Page 69 Removing and installing components...
  • Page 70 Steps 1. Align and place the keyboard on the keyboard support plate and secure it using the two (M2x2) screw. 2. Replace the keyboard assembly in to its slot in the computer. 3. Connect the keyboard FPC and keyboard backlight FPC to the touchpad module. 4.

  • Page 71: Palmrest Assembly

    Palmrest assembly Removing the palmrest assembly Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the microSD card. 3. Remove the base cover. 4. Remove the solid-state drive. 5. Remove the WWAN card. 6. Remove the battery. 7.
  • Page 72 Steps 1. Place the palmrest assembly on a flat surface. 2. Transfer over the components to the new palmrest assembly. Next steps 1. Install the keyboard. 2. Install the power button with finger print reader. 3. Install the board. 4. Install the system board.

  • Page 73: Chapter 3: Software

    Topics: • Operating system • Downloading Windows drivers Operating system Your Latitude 7520 supports the following operating systems: ● Windows 10 Home (64-bit) ● Windows 10 Professional (64-bit) ● Ubuntu 20.04 LTS Downloading Windows drivers Steps 1. Turn on the notebook.

  • Page 74: 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 75: Navigation Keys

    Navigation keys NOTE: For most of the System Setup options, changes that you make are recorded but do not take effect until you restart the system. Keys Navigation Up arrow Moves to the previous field. Down arrow Moves to the next field. Enter Selects a value in the selected field (if applicable) or follow the link in the field.
  • Page 76 Table 2. System setup options—System information menu (continued) Overview Battery Information Primary Displays that battery is primary. Battery Level Displays the battery level of the system. Battery State Displays the battery state of the system. Health Displays the battery health of the system. AC Adapter Displays whether the AC adapter is connected or not.
  • Page 77 Table 3. 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 78 Table 4. System setup options—Integrated Devices menu (continued) Integrated Devices Disable USB4 PCIE Tunneling Disable the USB4 PCIE Tunneling option. By default, the option is disabled. Video/Power only on Type-C Ports Enable or disable the Type-C port functionality to video or only power. By default, the Video/Power only on Type-C Ports option is disabled.
  • Page 79 Table 5. System setup options—Storage menu (continued) Storage By default, the Secure Digital (SD) Card Read-Only Mode option is not enabled. Table 6. System setup options—Display menu Display Display Brightness Brightness on battery power Enable to set screen brightness when the system is running on battery power. Brightness on AC power Enable to set screen brightness when the system is running on AC power.
  • Page 80 Table 8. System setup options—Power menu Power Battery configuration Enables the system to run on battery during peak power usage hours. Use the table Custom Charge Start and Custom Charge Stop, to prevent AC power usage between certain times of each day. By default, the Adaptive option is enabled.
  • Page 81 Table 9. System setup options—Security menu (continued) Security Clear Enables to clear the TPM owner information and returns the TPM to the default state. By default, the Clear option is disabled. PPI ByPass for Clear Commands Controls the TPM Physical Presence Interface (PPI). By default, the PPI ByPass for clear Commands option is disabled.
  • Page 82 Table 10. System setup options—Passwords menu (continued) Passwords Password Bypass When enabled, this always prompts for system and internal hard drive passwords when powered on from the off state. By default, the Disabled option is selected. Password Changes Enable Non-Admin Password Changes Enable or disable to change system and hard drive password without the need for admin password.
  • Page 83 Table 12. System setup options—System Management menu System Management Service Tag Display the Service Tag of the system. Asset Tag Create a system Asset Tag. AC Behavior Wake on AC Enable or disable the wake on AC option. By default, the option is disabled. Wake on LAN Wake on LAN Enable or disable the system to power on by special LAN signals when it...
  • Page 84 Table 14. System setup options—Pre-boot Behavior menu (continued) Pre-boot Behavior 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. By default, the Prompt on Warnings and Errors option is enabled.

  • Page 85: Updating The Bios In Windows

    Table 16. System setup options—Performance menu (continued) Performance C-States Control Enable C-State Control Enable or disable additional processor sleep states. By default, the option is enabled. Intel TurbocBoost Technology Enable Intel Turbo Boost Technology Enable or disable Intel TurboBoost mode of the processor. By default, the option is enabled.

  • Page 86: Updating Bios On Systems With Bitlocker Enabled

    3. If you are unable to detect or find the Service Tag, click Choose from all products. 4. Choose the Products category from the list. NOTE: Choose the appropriate category to reach the product page. 5. Select your computer model and the Product Support page of your computer appears. 6.

  • Page 87: System And Setup Password

    Figure 8. DOS BIOS Update Screen System and setup password Table 18. System and setup password Password type Description System password Password that you must enter to log on to your system. Setup password Password that you must enter to access and make changes to the BIOS settings of your computer.

  • Page 88: Deleting Or Changing An Existing System Setup Password

    ● Only lower case letters are valid, upper case letters are not allowed. ● 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.

  • Page 89: Chapter 5: Troubleshooting

    Troubleshooting Topics: • Recovering the operating system • Backup media and recovery options • Dell SupportAssist Pre-boot System Performance Check diagnostics • Diagnostic LED behavior • Real-Time Clock (RTC Reset) • Flashing BIOS (USB key) • Flashing the BIOS • WiFi power cycle •...

  • Page 90: Running The Supportassist Pre-Boot System Performance Check

    ● View error messages that inform you of problems encountered during testing NOTE: Some tests for specific devices require user interaction. Always ensure that you are present at the computer terminal when the diagnostic tests are performed. For more information, see Resolve Hardware Issues With Built-in and Online Diagnostics (SupportAssist ePSA, ePSA or PSA Error Codes) Running the SupportAssist Pre-Boot System Performance Check...

  • Page 91: Real-Time Clock (Rtc Reset)

    Table 19. Diagnostic LED behavior (continued) Blinking pattern Amber White Problem description Suggested resolution Memory/RAM failure ● Reset and swap memory modules amongst the slots. ● If problem persists, replace the memory module. Invalid memory installed ● Reset and swap memory modules amongst the slots.

  • Page 92: Flashing Bios (Usb Key)

    Flashing BIOS (USB key) Steps 1. Follow the procedure from step 1 to step 7 in "Flashing the BIOS" to download the latest BIOS setup program file. 2. Create a bootable USB drive. For more information see the knowledge base article SLN143196 at www.dell.com/support.

  • Page 93: Bios Recovery

    BIOS recovery The BIOS recovery is designed to fix the main BIOS, and cannot work if the boot is damaged. The BIOS recovery will not work in the event of EC corruption, ME corruption, or a hardware related issue. The BIOS recovery image should be available on the unencrypted partition on the drive for BIOS recovery feature.

  • Page 94: Bios Recovery Using Usb Drive

    h. Copy both the BIOS files BIOS_CUR.rcv and BIOS_PRE.rcv to the recovery folder on Local Disk (E). In the Command Prompt window, at the DISKPART prompt, type set id=DE. After the executing this command, the partition Local Disk (E) will not be accessible by the OS. 5.

  • Page 95: Lcd Built-In Self Test (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. When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines, color fade etc., it is always a good practice to isolate the LCD (screen) by running the Built-In Self Test (BIST).

  • Page 96: Chapter 6: Getting Help

    Getting help Topics: • Contacting Dell Contacting Dell Prerequisites NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. 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.

This manual is also suitable for:

P110f

Table of Contents