3.13 Replacing the Main Board
1. Refer to section 3.2 to remove the electronics cover.
2. Refer to section 3.3 to remove the power supply unit.
3. Refer to section 3.12 to remove the GPIO interface board (if installed).
4. Remove the 2 screws (fastened by 7.5 kg±15% kg-cm) and 2 hexagon screws.
5. Remove 1 copper pillar, 5 screws (fastened by 7.5 kg±15% kg-cm), and all connectors from the main board.
6. Remove/Replace the main board. Reassemble the parts in the reverse procedures.