Carefully gather the Extruder motor, hotend fan, PINDA and nozzle fan cables, into a single bundle. Make sure that the cables are routed through the channels provided for them, as shown in the first image

Slide the bottom of the x_carriage_back carefully over the cable bundle. Ensure that the cables are in their channels and that none of the cables are pinched against the x_carriage or x_carriage_back.

Secure the bottom of the x_carriage_back with one M3x18 screw,

and two M3x10 screws.