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六、原理分析法从计算机的基本原理出发,根据机器所安排的时间关系,从逻辑上分析各点应有的特征,这种方法称原理分析法.例如在某一时刻,某个“点”应有多宽的脉冲信号,或者应满足那些条件,这些条件正确的电平状态是高电平还是低电平,然后测试观察这“点”的具体现象,分析判断故障原因的可能性,再缩小范围观察、分析、判断,直至找出故障原因.这是一种排除故障的基本方法,计算机设计、制造、维修、调试人员都应该逐步掌握.当然真正遇到故障时不一定都采用这种方法,因为“原理分析法”
Sixth, the principle of analysis method From the basic principles of the computer, according to the time arrangement of the machine, from the logical analysis of the characteristics of each point, this method is called principle analysis method, for example, at a certain moment, a point “Should have a wide pulse signal, or should meet those conditions, the conditions of these conditions is the level of the state is high or low level, and then test the ” point “of the specific phenomenon, analysis and determine the cause of the malfunction Possibility to further narrow the scope of observation, analysis, judgment, until the cause of the fault to find out. This is a troubleshooting of the basic method of computer design, manufacturing, maintenance, commissioning staff should gradually grasp. Of course, not really encounter a fault Have adopted this method, because ”principle analysis method"