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根据成都地铁工程车的配置，对检修制度、备件管理及技能水平等维保主要环节进行分析。结合实际故障，对故障现象、故障原因、解决方案等方面进行详细阐述。“,”Based on the configuration and status of Chengdu metro engineering vehicles, the main aspects of the system for maintenance, spare parts management, and skill level of maintenance are analyzed. Taking into account of failures in operation, the aspects of failure phenomenon, cause, and solutions etc. are described in detail.