1- We removed the screws holding the lid of the box, with the help of a screwdriver.
2- After we removed the part unscrew the machinism and we took it off.
3- To remove the mechanism, we leave the loose wires, knowing which is which.
4- When we have the new mechanism, we bring them back to the cables that we loose.
5- Finally, we bring them back to the cover with the screws and a screwdriver.