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Latitude 5340/Latitude 5340 2-in-1 Owner's Manual

Installing the system board

Prerequisites

CAUTION:The information in this installation section is intended for authorized service technicians only.

If you are replacing a component, remove the existing component before performing the installation procedure.

About this task

NOTE:When replacing or accessing other parts, the system board can be installed with the heat sink attached in order to simplify the procedure and preserve the thermal bond between the system board and heat sink.
Figure 1. System board connectors
Image: System board connectors
  1. Fingerprint-reader cable connector
  2. Sensor cable connector
  3. Fan-cable connector
  4. eDP-cable connector
  5. Solid-state drive slot
  6. Battery-cable connector
  7. Touchpad-cable connector
  8. Coin-cell battery connector
  9. Universal Security Hub (USH) cable connector
  10. WLAN-card connector
  11. Speaker-cable connector
  12. WWAN 5G/4G-card connector

The following image indicates the location of the system board and provides a visual representation of the installation procedure.

Figure 2. Installing the system board
Image: Installing the system board
Figure 3. Installing the system board
Image: Installing the system board

Steps

  1. Slide the system board at an angle into the palm-rest assembly and align the screw holes that secure the system board to the palm-rest assembly.
  2. Replace the four screws (M2x3) to secure the system board to the palm-rest assembly.
  3. Replace the screw (M2x4) to secure the system board to the palm-rest assembly.
  4. Connect the fingerprint-reader cable to the system board.
  5. Connect the eDP cable to the system board.
  6. Adhere the tape to cover the eDP cable.
  7. Connect the touchpad cable on the system board and close the latch.
  8. Connect the USH board cable on the system board and close the latch.
  9. Connect the speaker cable on the system board and adhere the tape to secure the speaker cable.
    Figure 4. Installing the system board
    Image: Installing the system board
  10. Align the fingerprint-reader bracket and replace the screw (M2x3) to secure it to the system board.
    NOTE:Systems with non-fingerprint reader configuration do not have a fingerprint reader bracket.
  11. Align the eDP bracket and replace the screw (M2x4) to secure the eDP bracket to the system board.
  12. Place the USB Type-C port bracket and replace the three screws (M2x5) to secure it to the system board.

Next steps

  1. Install the heat sink.
  2. Install the fan.
  3. Install the WLAN card.
  4. Install the WWAN 4G card or WWAN 5G card.
  5. Install the M.2 2230 solid-state drive.
  6. Install the battery.
  7. Install the base cover.
  8. Install the SIM card tray (for computers with nano-SIM card option).
  9. Follow the procedure in After working inside your computer.

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