数台香港产KRS—600型电子点歌器遥控板(以下简称遥控板)出现故障,所有功能键均失效。该遥控板以集成块MN6014作为控制信号处理器。由于无电路图,市面现有手册上也查不到MN6014的内部功能,给维修带来困难。本人根据其印制板布线绘出电路图(见图1),并根据面板标识(见图2)确认出集成块有关控制脚对应的32个功能键所属的矩阵开关(见表1),同时,比照一台完好的遥控板,测出集成 Several Hong Kong-produced KRS-600 electronic point device remote control board (hereinafter referred to as remote control board) failure, all function keys are invalid. The remote control board with integrated block MN6014 as a control signal processor. As there is no circuit diagram, the existing manual on the market can not find the internal function of MN6014, to repair difficulties. I plotted the circuit diagram according to the printed wiring board (see Figure 1), and according to the panel identification (see Figure 2) to confirm the integrated block on the control of the corresponding functional key matrix 32 belongs to the matrix switch (see Table 1) A well-controlled remote control board, measured integration