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故障现象一打开工作站开关,系统不能正常启动。故障分析与检修(1)检查主电源,正常;观察绿色电源指示灯DS1正常。(2)根据图纸分析并用万用表测量,结果:电压经过CB1和CB2然后通过J1进入Surge Suppressor Board,电压正常输入。查看输出,首先发现power control PCB板指示灯不亮,根据手册测量P1的4,6脚的230 VAC和1,3脚115 VAC不存在,说明前面电路故障。查看T1和Surge Suppressor Board之间的通讯,发现J2的1,4脚和2,5
Symptom A switch on the workstation, the system can not be started normally. Fault Analysis and Troubleshooting (1) Check the main power, normal; observe the green power indicator DS1 normal. (2) According to the drawing analysis and measurement with a multimeter, the result: voltage through the CB1 and CB2 and then through J1 into the Surge Suppressor Board, the voltage is normal input. Check the output, first found that the power control PCB board light is not lit, according to the manual measurement of P1 4, 6 feet 230 VAC and 1,3 feet 115 VAC does not exist, indicating that the front of the circuit fault. Check the communication between T1 and Surge Suppressor Board and find J2’s 1, 4 and 2,5