148 
17.3.2  CU-E15NKR  CU-E18NKR  CU-E21NKR 
1  Remove the 4 screws of the Top Panel. 
 
Fig.1 
 
2  Remove the 10 screws of the Front Panel. 
 
Fig.2 
 
3  Remove the Top Cover of the Electronic 
Controller. 
 
Fig.3 
 
4  Remove the Control Board. 
 
Fig.4 
 
5  Remove the 8 screws of the Electronic 
Controller. 
 
Fig.5 
 
 
 Caution! When handling electronic controller, be careful of 
electrostatic discharge.