All rights reserved  49  Servicemanual_UR3_en_rev3.1.2 
 
3.2.2 Replacement of motherboard 3.1 
 
Take care of ESD handling 3.2.1 Handling ESD-sensitive parts  
How to replace motherboard 3.1  
1.  Shut down the controller and disconnect the power cable, open the controller cabinet and loosen 
the 3 Torx screws 
 
 
 
 
 
 
 
 
 
 
 
 
 
2.  Remove the aluminum cover plate