Assuming those assumptions are true, my question is whether the robot had separate power feeds to the sensors vs the actuators. If the worker needs to test/tun

Assuming those assumptions are true, my question is whether the robot had separate power feeds to the sensors vs the actuators. If the worker needs to test/tune/adjust/repair the sensors, and needed that system energized, was the robot built in such a way that the sensor/control system could be energized, but the actuator motors de-energized? If not, the worker was stuck in a very dangerous position, and was effectively killed by the robot's designers.