微机自检过程的故障分析与诊断方法

FAULT ANALYSIS AND DIAGNOSTIC METHODS IN THE PROCESS OF SELF-TEST OF COMPUTER

微机自检过程大致可分为ＣＰＵ复位、芯片组与内存检测及Ｉ／Ｏ设备初始化３个步骤。自检过程的故障表现为屏幕有显示和无显示２类，这些故障可根据指示灯信号、Ｉ／Ｏ槽上的某些重要信号的异常情况或根据微机报警声音、屏幕上的出错信息等自检结果来进行诊断。

The process of self-test is roughly divided into three stages including CPU resetting and chipset, memory checking and I/O device initialization. Faults in this process have two types, the one displays in the screen, and the other has no display in the screen. These faults can be diagnosed according to results of self-testing of signs of pilot lamp, unusual phenomena of some important sings on I/O slots or computer warning sounds and error information in screen and so on.