Regarding my own experience, i am Electronic Engineer having more than two years of experience in repairing an electronic cards for all brands of elevator. This is my first experience that i am dealing with electrical and mechanical problems of an elevators. I am not alone in this company but we have technicians having 24 years of experience in this field. We only face problems in KONE elevators because this is the first time we are servicing this brand of elevators therefore we dont have any technical detail and all of you know that without having any technical detail no one can do anything whether no matter how much he qualified.Any how we have arranged one KONE technician and he fixed that problem.