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Dell Precision 5470 Service Manual
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Dell Precision 5470 Service Manual

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Precision 5470
Service Manual
Regulatory Model: P154G
Regulatory Type: P154G001, P154G002
April 2022
Rev. A00

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  • Page 1 Precision 5470 Service Manual Regulatory Model: P154G Regulatory Type: P154G001, P154G002 April 2022 Rev. A00...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2022 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

    After working inside your computer..........................9 BitLocker..................................9 Chapter 2: Removing and installing components................10 Recommended tools................................10 Screw list..................................... 10 Major components of Precision 5470..........................11 Base cover................................... 13 Removing the base cover............................13 Installing the base cover.............................15 M.2 solid-state drive................................. 16 Removing the M.2 2230 solid state drive......................16 Installing the M.2 2230 solid state drive.........................17...
  • Page 4 Deleting or changing an existing system setup password..................81 Clearing BIOS (System Setup) and System passwords................... 81 Chapter 5: Troubleshooting......................82 Handling swollen Lithium-ion batteries........................82 Dell SupportAssist Pre-boot System Performance Check diagnostics..............82 Running the SupportAssist Pre-Boot System Performance Check..............83 Built-in self-test (BIST)..............................83 M-BIST...................................83 LCD Power rail test (L-BIST)...........................
  • Page 5 Backup media and recovery options..........................86 WiFi power cycle................................86 Drain residual flea power (perform hard reset)......................87 Chapter 6: Getting help and contacting Dell................88 Contents...

  • Page 6: Chapter 1: Working Inside Your Computer

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

  • Page 7: Safety Precautions

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

  • Page 8: Esd Field Service Kit

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

  • Page 9: Transporting Sensitive Components

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

  • Page 10: Chapter 2: Removing And Installing Components

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

  • Page 11: Major Components Of Precision 5470

    T5, M1.4x4 System board M2x4 T5, M1.4x4 M1.6x2.3 Power button board with M1.6x2 fingerprint reader USH board M1.4x1.2 WLAN antennas M1.4x2.5 Major components of Precision 5470 The following image shows the major components of Precision 5470. Removing and installing components...
  • Page 12 1. Base cover 2. Battery 3. Right fan 4. Audio jack 5. System board 6. Speakers 7. Palm-rest 8. WLAN antennas Removing and installing components...

  • Page 13: Base Cover

    14. Heat-sink discrete NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.
  • Page 14 Steps 1. Remove the eight (T5, M2x3) torx screws that secure the base cover to the computer. Removing and installing components...

  • Page 15: Installing The Base Cover

    2. Use a scribe to pry from the gap at the bottom-left corner of the base cover. Then slide the scribe towards the middle of bottom side, and then the left side of the system to disengage the clips. Repeat the same process for the other side of the system.

  • Page 16: M.2 Solid-State Drive

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

  • Page 17: Installing The M.2 2230 Solid State Drive

    About this task The figure indicates the location of the M.2 2230 solid state drive and provides a visual representation of the removal procedure. Steps 1. Remove the (M2x2) screw that secures the SSD thermal plate to the M.2 2230 solid state drive bracket. 2.
  • Page 18 Steps 1. Align and place the M.2 2230 solid state drive on the M.2 2230 solid state drive bracket. NOTE: Install the M.2 2230 solid state drive to the SSD bracket so that the top side (with the sticker) of the M.2 2230 solid state drive is facing up.

  • Page 19: Removing The M.2 2280 Solid State Drive

    4. Replace the (M2x2) screw that secures the SSD thermal plate to the M.2 2230 solid state drive bracket. Next steps 1. Install the base cover. 2. Follow the procedure in After working inside your computer. Removing the M.2 2280 solid state drive Prerequisites NOTE: For computers shipped with M.2 2280 solid state drive.

  • Page 20: Installing The M.2 2280 Solid State Drive

    Steps 1. Remove the (M2x2) screw that secures the SSD thermal plate to the M.2 2280 solid state drive. 2. Lift to remove the SSD thermal plate. 3. Lift the M.2 2280 solid state drive at an angle and slide to remove from its slot on the system board. Installing the M.2 2280 solid state drive Prerequisites NOTE:...

  • Page 21: 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 22: Removing The Battery

    ● Swollen batteries should not be used and should be replaced and disposed properly. For guidelines on how to handle and replace swollen Lithium-ion batteries, see Handling swollen Lithium-ion batteries. Removing the battery Prerequisites 1. Follow the procedure in Before working inside your computer.

  • Page 23: Installing The Battery

    Steps 1. Unroute the WLAN antennas from the routing guides on the battery. 2. Remove the five (M2x4) screws that secure the battery to the palm-rest and keyboard assembly. 3. Slightly lift the battery at an angle and slide to remove from the palm-rest and keyboard assembly. Installing the battery Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 24 Removing and installing components...

  • Page 25: Left Fan

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

  • Page 26: Installing The Left Fan

    Disconnect the left fan cable from the system board. 2. Remove the two (M2x4) screws that secure the left fan to the palm-rest and keyboard assembly. 3. Lift the left fan to remove it from the palm-rest and keyboard assembly. After the fan cable is disconnected and the screws that are removed, lift the fan from its outer edge and slide it away from the system.

  • Page 27: Right Fan

    About this task The following images indicate the location of the left fan and provide a visual representation of the installation procedure. Steps 1. Align the screw holes on left fan with the screw holes on the palm-rest and keyboard assembly. 2.
  • Page 28 Steps NOTE: Before disconnecting the fan cables from the system board, carefully peel off the (1) tweeter speaker from its compartment next to the (2) connector to create more space for the disconnection. Disconnect the right fan cable from the system board. 2.

  • Page 29: Installing The Right Fan

    NOTE: The image above shows the process for the left fan. The same process applies to the right fan. Installing the right fan Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the right fan and provide a visual representation of the installation procedure.

  • Page 30: Heat Sink

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

  • Page 31: Installing The Heat-Sink For Integrated Graphics

    Installing the heat-sink for integrated graphics Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the heat-sink and provides a visual representation of the installation procedure. Steps 1.

  • Page 32: Installing The Heat-Sink For Discrete Graphics

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

  • Page 33: Audio Jack

    Steps 1. Align and insert the heat-sink into its slot on the system board. 2. Tighten the five captive screws that secure the heat-sink to the system board. NOTE: Loosen the captive screws in the order that is marked on the heat-sink next to the screws [1 > 2 > 3 > 4 > 5]. Next steps 1.

  • Page 34: Installing The Audio Jack

    Steps 1. Remove the three (M2x4) screws that secure the left USB Type-C bracket to the system board. 2. Lift to remove the left USB Type-C bracket from the system board. 3. Disconnect the audio jack FPC from its connector on the system board. 4.
  • Page 35 Steps 1. Align and place the audio jack in its slot on the palm-rest and keyboard assembly. 2. Connect the audio jack FPC to its connector on the system board. 3. Replace the (M1.6x3) screw to secure the audio jack to the system board. 4.

  • Page 36: Speakers

    Speakers Removing the speaker Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. 3. Remove the battery. About this task The figure indicates the location of the speaker and provides a visual representation of the removal procedure. Steps 1.

  • Page 37: Installing The Speaker

    4. Remove the two (M1.6x1.8) screws that secure the left and right speakers to the palm-rest and keyboard assembly. 5. Lift to remove the left and right speakers from the palm-rest and keyboard assembly. Installing the speaker Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the speakers and provides a visual representation of the installation procedure.

  • Page 38: Smart-Card Reader

    3. Replace the two (M1.6x1.8) screws that secure the left and right speakers to the palm-rest and keyboard assembly. 4. Connect the left and right speaker cables to the system board. Next steps 1. Install the battery. 2. Install the base cover.

  • Page 39: Installing The Smart-Card Reader

    Steps 1. Disconnect the smart-card reader FFC from the connector on the USH board. 2. Peel the smart-card reader FFC from the palmrest and keyboard assembly. 3. Remove the two (M1.6x1.7) screws that secure the smart-card reader to the computer. 4.
  • Page 40 Steps 1. Align and place the smart-card reader into its slot on the computer. 2. Adhere the adhesive and replace the two (M1.6x1.7) screws to secure the smart-card reader in place. 3. Adhere the smart-card reader FFC to the palmrest and keyboard assembly. 4.

  • Page 41: Display Assembly

    Display assembly Removing the display assembly Prerequisites 1. Follow the procedure in Before working inside your computer. 2. Remove the base cover. About this task The figure indicates the location of the display assembly and provides a visual representation of the removal procedure. Removing and installing components...
  • Page 42 Steps 1. Remove the two (T5, M1.4x4) Torx screws that secure the display FPC holder to the system board. 2. Remove the two (T5, M1.4x4) Torx screws that secure the display FPC to the system board. 3. Disconnect the display FPC from the system board and remove the interposer board. CAUTION: Technicians must remove the interposer board immediately after disconnecting the display FPC to prevent the board from falling out of the system during subsequent removal procedures.

  • Page 43: Installing The Display Assembly

    5. Slide the bottom assembly slightly to the left and then away from the display assembly to remove the display assembly from the system. NOTE: The display assembly is a Hinge-Up Design (HUD) assembly and cannot be further disassembled once it is removed from the bottom chassis.
  • Page 44 Removing and installing components...
  • Page 45 Steps 1. Align the screw holes on the hinges on the display assembly to the screw holes on the palm-rest and keyboard assembly. 2. Replace the six (M2.5x5) screws to secure the display assembly to the palm-rest and keyboard assembly. 3.
  • Page 46 4. Place the interposer board and connect the display FPC to the system board. 5. Replace the two (T5, M1.4x4) Torx screws that secure the display FPC to the system board. 6. Replace the two (T5, M1.4x4) Torx screws that secure the display FPC holder to the system board. Next steps 1.

  • Page 47: System Board

    System board Removing the system board Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the M.2 2230 solid state drive M.2 2280 solid state drive. 4. Remove the battery. 5. Remove the left fan.
  • Page 48 1. Power button with fingerprint reader FPC connector 2. Audio jack FPC connector 3. Left fan cable connector 4. Left tweeter speaker cable connector 5. Integrated WLAN card 6. Battery LED FPC connector 7. Battery cable connector 8. M.2 2230/2280 solid state drive slot 9.
  • Page 49 Removing and installing components...
  • Page 50 Steps 1. Remove the four (T5, M1.4x4) Torx screws that secure the display FPC holder and display FPC to the system board. 2. Disconnect the display FPC from the system board and remove the interposer board. CAUTION: Technicians must remove the interposer board immediately after disconnecting the display FPC to prevent the board from falling out of the system during subsequent removal procedures.
  • Page 51 7. Disconnect the power button board with fingerprint reader FPC from the system board. 8. Peel the left and right tweeter speakers from their compartments on the palm-rest and keyboard assembly. 9. Disconnect the left and right speaker cables from the system board. 10.

  • Page 52: Installing The System Board

    Installing the system board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the system board and provides a visual representation of the installation procedure. Removing and installing components...
  • Page 53 Removing and installing components...
  • Page 54 CAUTION: The USH board FPC and touchpad FPC are connected to the bottom side of the system board and must be transferred to the new replacement system board. Steps 1. Align the screw holes on the system board with the holes on the palm-rest and keyboard assembly. 2.
  • Page 55 5. Connect the power button board with fingerprint reader FPC to the system board. 6. Connect the USH board FPC (for models shipped with a USH board) and touchpad FPC to their respective connectors. 7. Connect the battery LED FPC to the system board. 8.

  • Page 56: Power Button With Fingerprint Reader

    11. Place the interposer board and connect the display FPC to the system board. 12. Replace the four (T5, M1.4x4) Torx screws that secure the display FPC holder and display FPC to the system board. Next steps 1. Install the heat-sink for integrated graphics heat-sink for discrete graphics.

  • Page 57: Installing The Power Button Board Assembly With Fingerprint Reader

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

  • Page 58: Ush Board

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

  • Page 59: Installing The Ush Board

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

  • Page 60: Wlan Antennas

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

  • Page 61: Installing The Wlan Antennas

    About this task The figure indicates the location of the WLAN antennas and provides a visual representation of the removal procedure. Steps 1. Remove the two (M1.4x2.5) captive screws that secure the auxiliary antenna on the palm-rest and keyboard assembly. 2.
  • Page 62 Steps 1. Align and place the auxiliary and main antennas into its slot on the palm-rest and keyboard assembly. 2. Reroute the auxiliary and main antennas using the routing guides on the palm-rest and keyboard assembly. 3. Adhere the tapes securing the auxiliary and main antennas to the palm-rest and keyboard assembly. 4.

  • Page 63: Palm-Rest And Keyboard Assembly

    Palm-rest and keyboard assembly Removing the palm-rest and keyboard assembly Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the base cover. 3. Remove the M.2 2230 solid state drive M.2 2280 solid state drive. 4. Remove the battery. 5.
  • Page 64 About this task The figure indicates the palm-rest and keyboard assembly and before performing the pre-installation parts procedures for any palm-rest and keyboard assembly installation procedure. Next steps 1. Install the WLAN antennas. 2. Install the power button board with finger print reader.

  • Page 65: Chapter 3: Drivers And Downloads

    Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article, Drivers and Downloads FAQ 000123347. Drivers and downloads...

  • Page 66: Chapter 4: Bios Setup

    BIOS setup CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program. Certain changes can make your computer work incorrectly. NOTE: Depending on the computer and its installed devices, the items listed in this section may or may not be displayed. NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen information for future reference.

  • Page 67: One Time Boot Menu

    One time boot menu To enter one time boot menu, turn on your computer, and then press F2 immediately. NOTE: It is recommended to shutdown the computer if it is on. The one-time boot menu displays the devices that you can boot from including the diagnostic option. The boot menu options are: ●...
  • Page 68 Table 3. BIOS setup options—System information menu (continued) General-System Information Processor L2 Cache Displays the processor L2 Cache size. Processor L3 Cache Displays the processor L3 Cache size. Microcode Version Displays the microcode version. Intel Hyper-Threading Capable Displays whether the processor is Hyper-Threading (HT) capable. 64-Bit Technology Displays whether 64-bit technology is used.
  • Page 69 Table 4. System setup options—Boot Configuration menu (continued) Boot Configuration By default, the Deployed Mode is enabled. Expert Key Management Enable Custom Mode Enable or disable custom mode. By default, the custom mode option is not enabled. Custom Mode Key Management Select the custom values for expert key management.
  • Page 70 Table 5. System setup options—Integrated Devices menu (continued) Integrated Devices Type-C Dock Override Enable to use connected Type-C Dell Dock to provide data stream with external USB ports disabled. When Type-C Dock Override is enabled, the Video/Audio/Lan submenu is activated.
  • Page 71 Table 7. System setup options—Display menu (continued) Display Touchscreen Touchscreen Enable or disable the touchscreen for the OS. By default, the option is enabled. Full Screen Logo Enable or disable full screen logo. By default, the option is disabled. Table 8. System setup options—Connection menu Connection Wireless Device Enable WLAN...
  • Page 72 By default, the Optimized option is enabled. USB Wake Support Wake on Dell USB-C Dock When enabled, connecting a Dell USB-C Dock will wake the system from Standby, Hibernate, and Power Off. By default, the Wake on Dell USB-C Dock option is enabled.
  • Page 73 Table 10. System setup options—Security menu (continued) Security Total Memory Encryption Enable or disable you to protect memory from physical attacks including freeze spray, probing DDR to read the cycles, and others. By default, the Total Memory Encryption option is disabled. Chassis intrusion Controls the chassis intrusion feature.
  • Page 74 Allow Non-Admin PSID Revert Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt. By default, the option is disabled. Table 12. System setup options—Update, Recovery menu...
  • Page 75 Dell Auto operating system Recovery Controls the automatic boot flow for SupportAssist System Resolution Console Threshold and for Dell operating system Recovery Tool. By default, the threshold value is set to 2. Table 13. System setup options—System Management menu System Management Service Tag Displays the Service Tag of the system.
  • Page 76 Table 14. System setup options—Keyboard menu (continued) Keyboard By default, the 10 seconds option is enabled. Keyboard Backlight Timeout on Set the timeout value for the keyboard backlight when the is running only on Battery battery power. By default, the 10 seconds option is enabled. Device Configuration Hotkey Access Manages whether you can access device configuration screens through hotkeys during system startup.
  • Page 77 Table 16. System setup options—Virtualization menu (continued) Virtualization ● Trusted Platform Module (TPM) ● Intel Hyper-Threading ● All CPU cores (Multi-Core Support) ● Intel Virtualization Technology ● Intel VT for Direct I/O By default, the option is disabled. DMA Protection Enable Pre-Boot DMA Support This setting controls Pre-boot DMA protection for both internal and external ports.

  • Page 78: 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 79: Updating The Bios In Linux And Ubuntu

    One-Time boot menu on the computer. Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12 One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the BIOS supports this BIOS update option.

  • Page 80: System And Setup Password

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

  • Page 81: Deleting Or Changing An Existing System Setup Password

    Clearing BIOS (System Setup) and System passwords About this task To clear the system or BIOS passwords, contact Dell technical support as described at www.dell.com/contactdell. NOTE: For information on how to reset Windows or application passwords, refer to the documentation accompanying Windows or your application.

  • Page 82: 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 83: Running The Supportassist Pre-Boot System Performance Check

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

  • Page 84: 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 85 (AC, battery, coin cell) and errors drain flea power by pressing and holding down power button for 3~5 seconds. CPU failure ● Run the Dell Support Assist/Dell Diagnostics tool. ● If problem persists, replace the system board. System board failure (included ●...

  • Page 86: 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 87: Drain Residual Flea Power (Perform Hard Reset)

    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 88: Chapter 6: Getting Help And Contacting Dell

    Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 23. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell app...

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