Dell Latitude 3320 Service Manual
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Dell Latitude 3320 Service Manual

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Latitude 3320
Service Manual
Regulatory Model: P146G
Regulatory Type: P146G001
August 2021
Rev. A02

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Summary of Contents for Dell Latitude 3320

  • Page 1 Latitude 3320 Service Manual Regulatory Model: P146G Regulatory Type: P146G001 August 2021 Rev. A02...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    Contents Chapter 1: Working inside your computer..................6 Safety instructions................................6 Before working inside your computer........................6 Entering Service Mode..............................7 Exiting Service Mode..............................7 Safety precautions.................................7 Electrostatic discharge—ESD protection....................... 8 ESD field service kit ..............................8 Transporting sensitive components.......................... 9 After working inside your computer..........................9 Chapter 2: Removing and installing components................
  • Page 4 System fan..................................33 Removing the left system fan..........................33 Installing the left system fan............................ 34 Removing the right system fan..........................35 Installing the right system fan..........................36 Display assembly................................38 Removing the display assembly..........................38 Installing the display assembly..........................40 Input Output board................................42 Removing the Input Output board..........................
  • Page 5 Handling swollen Lithium-ion batteries........................75 Dell SupportAssist Pre-boot System Performance Check diagnostics..............75 Running the SupportAssist Pre-Boot System Performance Check..............76 Built-in self-test (BIST)..............................76 M-BIST................................... 76 LCD Power rail test (L-BIST)........................... 77 LCD Built-in Self Test (BIST)............................77 System-diagnostic lights..............................77 Recovering the operating system..........................79 Real-Time Clock (RTC Reset)............................79...

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

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

  • Page 8: Electrostatic Discharge-Esd Protection

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

  • Page 9: Transporting Sensitive Components

    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 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 #0 screwdriver ● Plastic scribe Screw List The following table shows the screw list and the image of the screws.
  • Page 11 Table 1. Screw list (continued) Component Screw type Quantity Image Touchpad M2x2 Heatsink assembly Captive screws Power button with fingerprint reader M2x3 System board M2x2.5 Type-C bracket M2x3 Removing and installing components...

  • Page 12: Major Components Of Your System

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

  • Page 13: Microsd-Card

    14. Power button with fingerprint reader 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: Installing The Microsd-Card

    Installing the MicroSD-card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image provides a visual representation of the MicroSD-card installation procedure. Steps Insert the microSD-card into its slot until it clicks into place. Next steps 1.
  • Page 15 Removing and installing components...

  • Page 16: Installing The Base Cover

    Steps 1. Loosen the seven captive screws that secure the base cover to the chassis. 2. Using a plastic scribe, pry open the base cover starting from the recesses located in the U-shaped indents near the hinges at the top edge of the base cover. 3.

  • Page 17: Solid-State Drive

    Steps 1. Align and place the base cover on the chassis, and snap the base cover into place. 2. Tighten the seven captive screws to secure the base cover to the chassis. Next steps 1. Exit the service mode. 2. Install the microSD-card. 3.

  • Page 18: Installing The M.2 2230 Solid-State Drive

    Steps 1. Open the solid-state drive mylar sheet that covers the solid-state drive. NOTE: There is a protective mylar sheet covering the solid-state drive. This mylar sheet must be opened in order to proceed with the removal procedure. 2. Remove the screw (M2x3) that secures the solid-state drive bracket to the system board. 3.
  • Page 19 Steps 1. Align the notch on the solid-state drive with the tab on the M.2 card connector. 2. Slide the solid-state drive into the M.2 card connector on the system board. 3. Align and place the solid-state drive bracket. 4. Install the screw (M2x3) that secures the solid-state drive bracket to the system board. 5.

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

    Removing the M.2 2280 solid-state drive 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 image indicates the location of the solid-state drive and provides a visual representation of the removal procedure. Steps 1.

  • Page 21: Speakers

    Steps 1. Align the notch on the solid-state drive with the tab on the M.2 card connector. 2. Slide the solid-state drive into the M.2 card connector on the system board. 3. Replace the screw (M2x3) that secures the solid-state drive to the system board. 4.

  • Page 22: Installing The Speakers

    Steps 1. Disconnect the speaker cable from the connector on the system board. 2. Unroute the speaker cable from the routing guide. 3. Peel the adhesive tapes that secure the speakers in place. 4. Remove the speakers from the chassis. Installing the speakers Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 23: Wlan Card

    Steps 1. Align and place the speakers in the slot on the chassis. 2. Route the speaker cables through the routing guide. 3. Connect the speaker cable to the connector. 4. Adhere the adhesive tapes to secure the speakers in place. Next steps 1.

  • Page 24: Installing The Wlan Card

    Steps 1. Remove the screw (M2x3) that secures WLAN card bracket to the system board. 2. Lift the WLAN card bracket out of the system. 3. Disconnect the antenna cables from the connectors on the WLAN card. 4. Lift and remove the WLAN card from the WLAN card slot. Installing the WLAN card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 25 Steps 1. Align the notch on the WLAN card with the tab on the WLAN card slot. 2. Slide the WLAN card at an angle into the WLAN card slot. 3. Connect the antenna cables to the connectors on the WLAN card. NOTE: The antenna cable connectors are fragile and utmost care should be taken while replacing them.

  • Page 26: Coin-Cell Battery

    3. Install the microSD-card. 4. Follow the procedure in After working inside your computer. Coin-cell battery Removing the coin-cell battery Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the microSD-card. 3. Enter the service mode. 4.

  • Page 27: Battery Cable

    About this task The following image indicates the location of the coin-cell battery and provides a visual representation of the installation procedure. Steps 1. Align and place the coin-cell battery on the palmrest assembly. 2. Connect the coin-cell battery cable to the connector on the system board. Next steps 1.

  • Page 28: Removing The Battery Cable

    ● 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 29: Installing The Battery Cable

    Installing the battery cable 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 cable and provides a visual representation of the installation procedure. Steps Connect the battery cable to the connector on the system board.

  • Page 30: Installing The 3-Cell Battery

    3. Enter the service mode. 4. Remove the base cover. About this task The following image indicates the location of the battery and provide a visual representation of the removal procedure. Steps 1. Peel the adhesive tapes that secure the battery in place. 2.

  • Page 31: Removing The 4-Cell Battery

    Steps 1. Align and place the battery in the slot on the chassis. 2. Install the three (M2x3) screws to secure the battery in place. 3. Route the battery cable through the routing channel in the battery. 4. Connect the battery cable to the connector on the battery and adhere the adhesive tape. 5.

  • Page 32: Installing The 4-Cell Battery

    Steps 1. Peel the adhesive tapes that secure the battery in place. 2. Peel the adhesive tape and disconnect the battery cable from the connector on the battery. 3. Peel the adhesive tapes and unroute the battery cable from the routing channel in the battery. 4.

  • Page 33: System Fan

    Steps 1. Align and place the battery in the slot on the chassis. 2. Install the five (M2x3) screws to secure the battery in place. 3. Route the battery cable through the routing channel in the battery. 4. Connect the battery cable to the connector on the battery and adhere the adhesive tape. 5.

  • Page 34: Installing The Left System Fan

    Steps 1. Disconnect the system fan cable from the connector on the system board. 2. Remove the two (M2x3) screws that secure the system fan in place. 3. Lift the system fan off the palmrest assembly. Installing the left system fan Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 35: Removing The Right System Fan

    Steps 1. Align and place the system fan onto the palmrest assembly. 2. Install the two (M2x3) screws that secure the system fan in place. 3. Connect the system fan cable to the connector on the system board. Next steps 1.

  • Page 36: Installing The Right System Fan

    Steps 1. For visibility, open the solid-state drive mylar sheet that covers the solid-state drive. 2. Disconnect the system fan cable from the connector on the system board. 3. Remove the two (M2x3) screws that secure the system fan in place. 4.
  • Page 37 Steps 1. Align and place the system fan onto the palmrest assembly. 2. Install the two (M2x3) screws that secure the system fan in place. 3. Connect the system fan cable to the connector on the system board. 4. Close the solid-state drive mylar sheet to cover the solid-state drive. Next steps 1.

  • Page 38: 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. NOTE: The display assembly removal procedure is the same for both laptop and convertible chassis.
  • Page 39 Steps 1. Remove the (M2x2.5) screw that secures the display cable bracket. Remove the display cable bracket. 2. Disconnect the display cable from the connector on the system board. 3. Peel the adhesive tape that secures the display cable. 4. Remove the (M2x2.5) screw and four (M2x3) screws that secure the display hinges to the system. 5.

  • Page 40: Installing The Display Assembly

    After performing the preceding steps, you are left with the display assembly. Installing the display assembly Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. NOTE: The display assembly installation procedure is the same for both laptop and convertible chassis. About this task The following images indicate the location of the display assembly and provide a visual representation of the installation procedure.
  • Page 41 Removing and installing components...

  • Page 42: Input Output Board

    Steps 1. Align and place the system chassis under the hinges of the display assembly. 2. Install the (M2x2.5) screw and four (M2x3) screws that secure the display hinges to the system. 3. Connect the display cable to its connector on the system board. Adhere the adhesive tape to secure the display cable. 4.

  • Page 43: Installing The Input Output Board

    Steps 1. Remove the two (M2x3) screws that secure the left display hinge to the system. 2. Lift the left hinge in upward direction away from the system. 3. Open the latch and disconnect the Input Output board cable from the connector on the Input Output board. 4.

  • Page 44: Heatsink Assembly

    Steps 1. Align and place the Input Output board on the palmrest assembly. 2. Install the (M2x2.5) screw to secure the Input Output board to the palmrest assembly. 3. Connect the Input Output board cable to the connector on the Input Output board and close its latch. 4.

  • Page 45: Installing The Heatsink Assembly

    About this task The following image indicates the location of the heatsink assembly and provides a visual representation of the removal procedure. Steps 1. For visibility, open the solid-state drive mylar sheet that covers the solid-state drive. 2. Loosen the four captive screws (in reverse order, 4->3->2->1) that secure the heatsink assembly to the system board. 3.

  • Page 46: Touchpad

    Steps 1. Align and place the heatsink assembly into the slot on the system board. 2. Tighten the four captive screws to secure the heatsink assembly to the system board. 3. Close the solid-state drive mylar sheet to cover the solid-state drive. Next steps 1.

  • Page 47: Installing The Touchpad

    2. Remove the microSD-card. 3. Remove the base cover. 4. Remove the battery. About this task The following image indicates the location of the touchpad and provides a visual representation of the removal procedure. Steps 1. Open the latch and disconnect the touchpad cable from the connector on the system board. 2.

  • Page 48: Power-Button Board

    Steps 1. Align and place the touchpad module into the slot on the palmrest assembly. 2. Install the two (M2x2) screws to secure the touchpad module to the palmrest assembly. 3. Align and place the touchpad bracket on the touchpad module. 4.

  • Page 49: Installing The Power-Button Board

    Steps 1. Open the latch and disconnect the power-button board cable from the connector on the system board. 2. Remove the (M2x3) screw that secures the power-button board to the chassis. 3. Remove the power-button board from the chassis. Installing the power-button board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 50: System Board

    Steps 1. Align and place the power-button board on the chassis. 2. Install the (M2x3) screw to secure the power-button board to the chassis. 3. Connect the power-button board cable to the connector on the system board and close its latch. Next steps 1.
  • Page 51 10. Remove the heatsink assembly. 11. Remove the power button with fingerprint reader. About this task The following image indicates the connectors on your system board. Figure 1. System-board connectors 1. Power button with fingerprint reader cable 2. Speaker cable 3.
  • Page 52 Steps 1. Open the latch and disconnect the touchpad cable, keyboard cable and LED cable from the connectors on the system board. 2. Disconnect the power cable, power button with finger print reader cable, speaker cable, and coin-cell battery cable from the connectors on the system board.

  • Page 53: Installing The System Board

    5. Remove the (M2x3) screw that secures the type-c bracket in place. 6. Lift and remove the system board from the system. 7. Lift and remove the type-c bracket from the system. Installing the system 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 connectors on your system board.
  • Page 54 Removing and installing components...
  • Page 55 Steps 1. Align and place the type-c bracket on the system board. NOTE: The type-c bracket must be installed on the system board before installing the system board into the palmrest assembly. Technicians cannot install the Type-c bracket once the system board is assembled into the palmrest assembly. 2.

  • Page 56: Power Adapter Port

    Power adapter port Removing the power adapter port 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 speaker. 6. Remove the M.2 solid-state drive.

  • Page 57: Installing The Power Adapter Port

    Installing the power adapter port 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 power adapter port and provides a visual representation of the installation procedure.

  • Page 58: 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 battery. 5. Remove the speaker. 6. Remove the M.2 solid-state drive. 7.
  • Page 59 2. Install the power button with fingerprint reader. 3. Install the heatsink assembly. 4. Install the touchpad. 5. Install the input output board. 6. Install the display assembly. 7. Install the system fan. 8. Install the M.2 solid-state drive. 9. Install the speakers. 10.

  • Page 60: 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 61: Chapter 4: 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 62: Boot Sequence

    Boot sequence enables you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical drive or hard drive). During the Power-on Self-Test (POST), when the Dell logo appears, you can: ● Access System Setup by pressing F2 key ●...
  • Page 63 Table 3. System setup options—System information menu (continued) Overview Health Displays the battery health of the system. AC Adapter Displays whether the AC adapter is connected or not. Processor Information Processor Type Displays the processor type. Maximum Clock Speed Displays the maximum processor clock speed. Minimum Clock Speed Displays the minimum processor clock speed.
  • Page 64 Table 4. System setup options—Boot Configuration menu (continued) Boot Configuration Secure Boot Mode Enable or disable to change the secure boot mode options. 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.
  • Page 65 Table 6. System setup options—Storage menu (continued) Storage Type Displays the M.2 PCIe SSD type information of the system. Device Displays the M.2 PCIe SSD device information of the system. Enable MediaCard Secure Digital (SD) Card Enable or disable the SD card. By default, the Secure Digital (SD) Card option is enabled.
  • Page 66 By default, the Enable USB Wake Support option is disabled. 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 67 Table 10. System setup options—Security menu (continued) Security SHA-256 When enabled, the BIOS and TPM will use the SHA-256 hash algorithm to extend measurements into the TPM PCRs during BIOS boot. By default, the SHA-256 option is enabled. Clear Enables to clear the TPM owner information and returns the TPM to the default state.
  • Page 68 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—Service menu System Management Service Tag (required) Displays the Service Tag of the system.
  • Page 69 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 14. System setup options—System Management menu System Management Service Tag Displays the Service Tag of the system.
  • Page 70 Table 16. System setup options—Pre-boot Behavior menu (continued) Pre-boot Behavior By default, the 0 seconds option is enabled. Table 17. System setup options—Virtualization menu Virtualization Intel Virtualization Technology Enable Intel Virtualization Technology When enabled, the system will be able to run a Virtual Machine Monitor (VT) (VMM).

  • Page 71: 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 72: 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 73: System And Setup Password

    Perform the following steps to perform the BIOS update flash process from the F12 menu: CAUTION: Do not turn off the computer during the BIOS update process. The computer may not boot if you turn off your computer. Steps 1. From a turn off state, insert the USB drive where you copied the flash into a USB port of the computer. 2.

  • Page 74: 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 75: 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 76: 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 77: 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 78 (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 79: 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 80: Wifi Power Cycle

    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 81: 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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