To maintain the lighting equipment:
1. Ensure the lighting desk and all cables are properly plugged in but not yet powered on.
2. Switch on the dimmer switches and any LED or moving lights separately.
3. Power on the lighting desk and test the lights; if any lights don't work, check the master controls are raised.
4. Visually inspect the rig for safety and that lights are securely mounted before powering on. Check for issues like loose lamp trays and report any faults to technicians.