Put the fence in the elevator, press the buttons on the first floor and the lower floor of the elevator, and the elevator will start to run down to the position where you are suitable for getting on the top of the car.
Open the door of the hall. If the door is opposite, the other door must be verified. The method is to open another door, close the originally opened door, and wait 10 seconds, so it will be verified.
So the doors have been checked,
Then verify the repair box and verify the emergency stop first. The method is to take a picture of the emergency stop, close the hall door, wait for 10 second, and open the door 10CM to confirm that the elevator is still there. If the elevator is still in its original position, then verify the maintenance,
The method is as above. It's all verified
You can turn on the light,
When you go in and drive the local train, you should slow down first to make sure the brakes are good.
After the work is completed, if you don't go out at the original hall door, you should also verify whether the electrical circuit of the door you want to go out is in good condition.