The robot's creator takes the control panel off the protagonist and puts it on the robot but doesn't connect any of its wires. The protagonist then presses a button, activating the robot, but it should not work as the wires are still disconnected.
The pawn shop owner breaks the head on the robot. But only he and the main protagonist witness it. Yet minutes later the robot's creator builds a replacement head and brings it to shop. He had no way of knowing the robot was broken.