Unplug the refrigerator from the wall outlet or turn off the refrigerator breaker in your home's service panel.
Grasp the control panel by the bottom, then pull the bottom away from the dispenser. Once the bottom is released, pull the top away from the dispenser.
Remove the wire connectors connected to the rear of the panel. Simply depress the tab on each connector and pull all off the terminals. Once the wire connectors are removed, set the control panel aside to continue disassembling the dispenser as applicable to your repair.