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介绍了某型发动机APU启动不成功故障,得出滑油低压信号器工作失效是故障的主要原因,并提出了信号器线路装配工艺的改进方法,为APU的修理提供了参考和借鉴。
The failure of a certain type of engine APU was introduced. The failure of the low pressure signal annunciator was the main reason for the failure. An improved method of annunciator assembly process was proposed, which provided a reference for the repair of APU.