Chapter  2  Names and Functions of System Components 
 
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Chapter 2   Names and Functions of System Components 
2.1 Power switch and how to turn it on 
 The power source is distributed from the control unit (NCK-175) to each unit of the system, and 
there is no power source switch at any devices. 
The power switch of the control unit is located in the chassis and using the high-voltage supply 
which is danger. Please do not open the cover except necessary cases. 
 
 1)    How to open the top plate of the control unit (NCK-175) 
 
Loosen the screws (4 pieces) at the control unit. 
 
 
Since the cover can be separated, pull out the cover.