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[II] Buzzer Test 
 
Checks for the operation panel buzzer. 
 
 
  Procedure    1  Press [2] key while the Keyboard Test 
menu is open. 
 
The buzzer will sound. 
 
2  The buzzer automatically stops after it 
sounds for a specified length of time. 
 
 
 
 Exit   1  Press [RADAR MENU] key. 
 
The menu will be closed. 
 
 
 
 
 
 
 
 
[III] Light 
 
Checks for the operation panel light. 
 
 
  Procedure    1  Press [3] key while the Keyboard Test 
menu is open. 
 
The brightness of the operation panel is 
gradually intensified at four levels. 
 
 
 
 Exit   1  Press [RADAR MENU] key. 
 
The menu will be closed.