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Latitude 5521 Service Manual

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

Installing the LED board

Steps

  1. Align the screw hole on the LED board with the screw hole on the palm-rest assembly.
  2. Replace the single screw (M2x3) to secure the LED board to the palm-rest assembly.
  3. Route the LED-board cable and connect the cable to the connector on the system board.
    CAUTION: Do not route the LED-board cable under the coin-cell battery. Incorrect routing of the LED-board cable may damage the LED board, LED-board cable, and system board.
  4. Connect the touchpad cable to the connector on the system board.

Next steps

  1. Install the assembly inner frame.
  2. Install the battery.
  3. Install the hard drive.
  4. Install the WWAN card.
  5. Install the WLAN card.
  6. Install the 2280 solid-state drive or 2230 solid-state drive.
  7. Install the base cover.
  8. Install the microSD card.
  9. Install the SIM card.
  10. Follow the procedure in After working inside your computer.

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