前一阶段,我局使用的几台JS4AI型出售机,先后都出现过应找四分时少找二分的故障。为了分析故障原因,我们进一步地研究了找四分电路的工作原理。找四分是由找二分电磁铁动作两次完成的(见图)。找四分辅助控制电路由射极输出器B G_4和电容器C_2等组成。当找币译码电路有找四指令输出时,高电位同 The previous stage, I use a few JS4AI aircraft vending machines, there have been looking for a quarter to find two points less fault. In order to analyze the cause of the malfunction, we further studied the working principle of finding the quarter circuit. Finding a quarter is done by finding a two-part electromagnet (see photo). Find four points auxiliary control circuit by the emitter output B G_4 and capacitors C_2 and other components. When looking for currency decoding circuit to find four instruction output, the same high potential