Locate the sensors: The safety sensors are usually located on the bottom of the tracks on either side of the garage door.

1. Check the sensors: Make sure that both sensors are clean, and that nothing is blocking their view. If there is any debris or dirt on the sensors, clean them with a soft cloth.

2. Check the alignment: Look at the sensors and make sure that they are aligned properly. They should be pointing directly at each other, with no obstructions in between them.

3. Adjust the sensors: If the sensors are misaligned, you can adjust them by loosening the screws that hold them in place and gently moving them until they are lined up properly. Once they are aligned, tighten the screws back up.

4. Test the sensors: Once you have adjusted the sensors, test the garage door to make sure that it goes down all the way. If the door still does not close, you may need to repeat the alignment process or call a professional technician for assistance.

It is important to ensure that your garage door safety sensors are properly aligned, as they are a crucial safety feature that prevents the door from closing on people or objects. I hope this helps! Let me know if you have any questions.