关于CFM56-5B发动机LPTC valve 故障

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楼主啊，排故过程可以通过FIM（波音）、TSM（空客）来查，但是需要相应的，具体的故障现象或故障信息，因为不同的现象有不同的排故过程。不能一概而论。
还有，你列举的“和LPTC valve 、HMU。ECU有关”
光看AMM
LPT clearance control valve is a butterfly valve, the valve consists of an outer housing, a control plate, a linear actuator, 2 RVDT sensors for feedback signals and a butterfly valve actuation.
Under control of the PCR pressure applied at its head end and a PC/PB modulated pressure applied at its rod end, the linear actuator moves a rack controlling both the opening and closing of the butterfly valve which regulates the amount of air required for cooling the turbine as a function of the engine operating configuration (engine rating).
在逻辑上，与他相关的这些部件都有可能导致与活门相关的故障。
请高手指正