查看诊断号0720，然后看Z轴电机电压以及连接线之类#6 LV 低电压报警 → LED [2]或[3]点亮#5 OVC 过电流报警#4 HCA 异常电流报警 → LED [8]点亮#3 HVA 过电压报警 → LED [1]点亮#2 DCA 放电报警 → LED [4]或[5]点亮#1 FBA 断线报警#0 OFA 溢出报警
