如果飞机已接通外部电源，检查引气系统页面，确保该页面上的流量控制活门状态、组件流量数据、组件温度数据位置没有全部显示为黄色的“XX”。

If the airplane is powered up by external power, it is necessary to check the BLEED system page, make sure the FCV status, Pack flow data and Pack temperature data are not indicated with yellow "XX".

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