2/ Unplug all the cables that connect the
screen to the base of the device.
It concerns the following cables: CN24, CN25,
CN26, power supply cable, ground cable and
orange/green switch cable.
Unplug the cable:
CN24 from the USB board;
CN25 from the 20-5A ERM board;
CN26 from the 15-50 ERM board.
Then, take the cables out of the base.