显示元件和故障

    显示元件和故障

    A

    数字显示

    E

    故障报告:“过电流”

    B

    红色LED指示灯

    F

    故障报告:“工作电压过低”

    C

    绿色LED指示灯

    G

    故障报告:“内部电气故障”

    D

    故障报告:“用尽”

    H

    故障报告:“内部机械故障”