BE1919B2 解释：PPS2, rack x protected 0 +208 VDC is off.原因：S0, S1, or S2 enable/disable switches is set to disable or the PPS has a failure.设置开关 enable
显示全部BE1919B2 解释：PPS2, rack x protected 0 +208 VDC is off.
原因：S0, S1, or S2 enable/disable switches is set to disable or the PPS has a failure.设置开关 enable
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