C8 Maintenance    12. Replacing the Control Board 
 
C Series Maintenance Manual Rev.2  399 
12.1 Replacing the Control Board 1 
 
Removal: Control board 1 
1.  Turn OFF the Controller. 
2.  Remove the Arm #1 center cover. 
For details, refer to C8 Maintenance 3. Covers. 
3.  Remove the connector connected to the control board 1. 
Connector: GS01 
 
4.  Remove the control board 1 fixed to the Arm #1. 
Cross recessed head screws: 3-M3×8 
 
Be careful not to drop the screws inside the Manipulator while 
removing them. 
 
5.  Remove the control board 1 protection plate. 
Cross recessed head screws with captive washer: M3×6 
 
It is not necessary to remove the spacer from the plate.