What must be ensured about the azimuth hand crank when the antenna CB open indicator is on?

When the antenna CB (circuit breaker) open indicator is illuminated, it signifies that there is an issue with the circuit breaker related to the antenna, which prevents the system from functioning properly. In this scenario, ensuring that the azimuth hand crank is disengaged is critical. Disengaging the hand crank prevents any unintended movement of the antenna during troubleshooting or maintenance, allowing technicians to safely inspect and address the underlying issue indicated by the CB open light.

The act of disengaging protects both the equipment and personnel working on or near the system, as operation of the azimuth hand crank while the circuit breaker is open could lead to mechanical failures or safety hazards. This ensures that any future adjustments to the antenna can be made properly and safely once the circuit breaker has been resolved and is functioning correctly.