一、系统板故障分类 系统板作为主机系统运行的基本母板,在微机系统的运转中起着至关重要的作用。系统时钟发生器与时序控制电路、CPU及总线控制逻辑、DMA传输与中断控制、系统基本控制软件(BIOS)、内存及其读写控制逻辑、系统配置参数的存储与读写、键盘控制逻辑、I/O总线插槽甚至某些外设控制逻辑(如打印控 First, the system board fault classification System board as the host system to run the basic motherboard, the computer system plays a crucial role in the operation. System clock generator and timing control circuit, CPU and bus control logic, DMA transmission and interrupt control, system basic control software (BIOS), memory and read and write control logic, system configuration parameters storage and read and write, keyboard control logic, I / O bus slots and even some peripheral control logic (such as print control