After the control device is powered on, nixie light display and key input is normal: (1)Output LED indicator is not lit and electromagnetic pulse valve does not work.
控制仪通电后数码管显示和按键输入正常： （1）输出LED指示灯没有亮，电磁脉冲阀也不动作， 则有可能SD-M-3002电路损坏。
The hardware of the sys-tem and the realization of the step motor module, audio module, LCD display and LED indicator and alarm module are ex-plained in detail.
详细地介绍了该系统的硬件原理，以及步进电机，音频控制，LCD显示，LED指示灯和报警灯等几个模块的实现方法。
When more than a set time frame, then failed to show that qualified products with led indicator display.
当超越了设定地时间规模，则停止不及格显现，产物及格用LED指示灯显现。
When more than a set time frame, then failed to show that qualified products with led indicator display.
当超越了设定地时间规模，则停止不及格显现，产物及格用LED指示灯显现。
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