1.CHECK “HAZARD ANSWER BACK” SETTING IN “WORK SUPPORT”
 
 2.CHECK “ANS BACK I-KEY LOCK” SETTING IN “WORK SUPPORT”
 
 3.CHECK “ANS BACK I-KEY UNLOCK” SETTING IN “WORK SUPPORT”
 
 4.CHECK HAZARD FUNCTION
 
 5.CHECK INTELLIGENT KEY WARNING BUZZER
 
 6.CONFIRM THE OPERATION