根據(jù)以下條件描根據(jù)以下條件描述故障想象,說出故障檢測和排除過程并描述出故障點(diǎn)。 1。接通電源,電源指示燈不亮,所有控制功能均失效; 2。冷卻泵電動(dòng)機(jī)缺一相; 3。主軸電動(dòng)機(jī)不能起動(dòng)
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