Dell Inspiron 5409 - System Board; Removing the System Board

Steps
1. Align and place the power button on the palm-rest and keyboard assembly.
2. Place the fingerprint-reader board (if applicable) on the palm-rest and keyboard assembly.
3. Replace the two screws (M2x2.5) that secure the power button with fingerprint reader to the palm-rest and keyboard
assembly.
4. Adhere the power-button cable to the palm-rest and keyboard assembly with the tape.
5. Align and place the power-button bracket on the power button.
6. Replace the screw (M2x2) that secures the power-button bracket to the palm-rest and keyboard assembly.
Next steps
1. Install the I/O board.
2. Install the battery (3-cell or 4-cell).
3. Install the fan.
4. Install the base cover.
5. Follow the procedure in After working inside your computer.
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 memory module.
4. Remove the WLAN card.
5. Remove the solid-state drive from M.2 slot one.
6. Remove the solid-state drive from M.2 slot two.
7. Remove the battery (3-cell or 4-cell).
8. Remove the heat sink.
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Removing and installing components