Skip to main content
  • Place orders quickly and easily
  • View orders and track your shipping status
  • Create and access a list of your products
  • Manage your Dell EMC sites, products, and product-level contacts using Company Administration.

Dell Latitude 7390 Owner's Manual

Removing system board

  1. Follow the procedure in Before working inside your computer .
    • NOTE: If your computer is shipped with a WWAN card, then the removal of a blank SIM card tray is a requirement.
  2. Remove the:
    1. SIM card

    2. base cover

    3. battery

    4. memory module

    5. PCle SSD

    6. SATA SSD

    7. WLAN card

    8. WWAN card

    9. heat sink assembly

To identify the screws, see screw list

  1. To remove the memory module bracket:
    1. Remove the M2 x 3 screw (1) that secure memory module bracket to the system board [1].
      • NOTE: The DDR ESD bracket is a pre-removal part when replacing the system board. Ensure that the DDR ESD bracket is reinstalled to the new replacement system board.
    2. Lift the memory module bracket from the system board [2].The image displays removing the memory module bracket
  2. To disconnect the eDP cable:
    1. Un route the WLAN and WWAN cables from the routing channels [1].
    2. Remove the M2 x 3 screw (2) and lift the eDP cable bracket that secures to the system board [2,3].
    3. Disconnect the clip that secures the cable to the system board [4].
    4. Remove the adhesive tape that secures the eDP cable [5].
    5. Disconnect the eDP cable from the system board [6].
    The image displays removing the eDP cable
  3. Disconnect the cables:
    • NOTE: To disconnect the speaker, LED board, coin cell battery and the power connector port cables, use a plastic scribe to release the cables from the connectors. Do not pull the cable as it may result in breakage
    1. speaker cable [1]
    2. LED board cable [2]
    3. coin cell battery cable [3]
    4. touchpad cable and USH board cable [4]
    5. power connector port [5]
    The image displays removing the cable connected to system board
  4. To remove the system board:
    1. Remove the M2 x 3 screws (8) that secure the system board [1].
      • NOTE: Ensure to remove the USB Type-C bracket from system board.
    2. Lift the system board away from the computer [2].
    The image displays removing the screws that secures the system board
  5. To remove the USB Type-C port from system board:
    1. Flip the system board, peel off the tapes and the screw securing the USB Type-C bracket.
    2. Lift the USB Type-C port away from the system board.

Rate this content

Easy to understand
Was this article helpful?
0/3000 characters
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please select whether the article was helpful or not.
  Comments cannot contain these special characters: <>()\