Before contacting us

Before contacting us,in order to solve the problem efficiently,

please kindly provide us following information.
1.Shop Name
2.Machine Type（EX,DX or EX-F）
3 Machine Serial Number, I/O Board Serial Number
4 The content of defective
1)How the defection happened? 
2)How is the frequency? 
3)Did it happen to all machines or only to one machine?br /> 4)If it happened to the EX-F or CVT, what is the type of already installed machine?