Introduction

This guide outlines the steps to replace a faulty Raspberry Pi CM4 on your StellarMate Pro. It is crucial to handle electronic components with care to prevent damage. Always wear an anti-static wrist strap to protect sensitive components from electrostatic discharge (ESD).

Required Tools

  • Phillips head screwdriver (M2.5 and M3 sizes)
  • Anti-static ESD wrist strap


Procedure

  1. Power Off: Ensure the StellarMate Pro is completely powered off and disconnected from any power source. 



2. Remove Antennas: Carefully detach the WiFi and GPS antennas from the device.

3. Open the Case: Unscrew the four M3 screws at the back of the StellarMate Pro case. Gently lift the lid, taking care not to damage the internal antenna cables. 


4. Disconnect CM4:

    • Disconnect the pigtail cable from the CM4.
    • Unscrew the four M2.5 screws securing the CM4.
    • Carefully lift the CM4 from the onboard sockets.

5. Install New CM4:

    • Align the new CM4 with the sockets.
    • Gently press the left side of the CM4 into place until you hear a distinct clicking noise.
    • Then, gently press the right side of the CM4 into place until you hear a second clicking noise. Ensure the CM4 is fully seated.

6. Reconnect Pigtail Cable:

    • Connect the pigtail cable to the CM4. Ensure a secure connection.
    • Secure the pigtail cable to the metal cable clip using the provided fastener.

7. Close the Case:

    • Lower the lid and secure it with the four M3 screws.
    • Reattach the WiFi and GPS antennas.


Important notes

    • Handle the CM4 and other components with care to avoid damage.
    • Use the provided screws and avoid over tightening them.
    • If you encounter difficulties, consult the StellarMate Pro support resources or seek professional assistance.