Schritt 9 übersetzen
Release the Airport and Bluetooth cables from the white plastic clip, mounted to the upper left edge of the Drive Carrier. Just push down on the clip and it will open.
Pay very close attention to and make notes of the wire routing through the following steps. It would be easy to inadvertently pinch wires between the drive carrier and the Upper Housing on reassembly.
Before proceeding, check once more that there is no strain on cables and connectors.