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19.4.3  Confirming the operation of the operation 
unit [Key Test] 
Confirm the operation of the keys of the operation unit. 
1  Click on the [Menu] button on the left Tool Bar. 
The menu is displayed. 
2  Click on the [Maintenance] - [Selftest] - [Key Test] button on the menu. 
3  Click on the [Key Test Start] button. 
 
 
Key Test window is displayed.