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。

youdao

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。

youdao

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。

youdao