摘要：分析与检修：该机走纸速度控制电路由低速控制集成块IC404（ICA955），电机驱动电路Q411、Q412，转速传感器和低速转换开关S501等元件组成（见图1）。
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Acta Mathematicae Applicatae Sinica Journal of Genetics and Genomics Acta Biochimica et Biophysica Sinica Journal of Systems Engineering and Electronics Chinese Annals of Mathematics Series B Chinese Annals of Mathematics,Series B Frontiers of Information Technology Electronic Engineering Transactions of Nonferrous Metals Society of China