3、LCD12864不能显示或不能清楚显示： 1）重新按住复位键和KEY A 2）或者：调整可调电阻。调到合适的亮度。 3）或者：冷启动。 4）或者：检查是否有其他按键按下，如红外接收头旁边的INT0按键是否压下。如压下，请弹起。 5）或者：温度传感器芯片是否拔出。如没有拔出，请拔出。重新复位并按住KEY A。-3, LCD12864 should not show or can not be clearly demonstrated: 1) Hold down the reset button and re-KEY A 2) or: adjust adjustable resistor. Transferred to a suitable brightness. 3) or: cold start. 4) or: check whether there are other key press, such as the infrared receiver head INT0 button next to it screwdown. Such as pressure, please up. 5) or: temperature sensor chip is pulled out. If no pull-out, please pull out. Re-reset and hold KEY A.