E4 Pro: Replacing the Main Board

To replace the Main Board of your Robo E4 Pro: 

You will need a 2.5mm Allen wrench, a #2 Phillip's head screwdriver, needle-nose pliers, and optionally markers to indicate which wire is which. 

Expect this process to take about 30 minutes.

1. Unplug your printer and set it upside down.
2. Use the large Allen wrench to remove the two screws on the bottom near the handles and loosen the other 5.
3. Tilt the bottom panel out of the way.
4. Carefully take photos and label all wires on the mainboard.
5. Detach all wires, being careful to only pull on the plastic, not the wires themselves. See video for instructions on removing the ribbon cable and other specialty wires.
6. Remove the board by unscrewing the six screws using the Allen wrench.
7. Reassemble with the new board.