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故障现象接通电源,该机不能进行自检,自检显示窗出现“VISIBLE SOURCE FAIL”的故障提示字符.分析与检修经查DU机的维修手册知,自检窗出现的故障提示字符意思是可见光源故障.(1)检查光源灯是否损坏,拆下该灯用万用表检查,该灯是好的.又对供给光源灯的灯电压进行检测,该电压值测试为0V,正常值应为11V左右.电源板的6A保险管也没有熔断.
The fault phenomenon is connected to the power supply, the aircraft can not perform self-test, self-test display window appears “VISIBLE SOURCE FAIL” fault prompt character. Analysis and maintenance by the inspection DU machine repair manual knows, self-test window appears the fault prompt character means Visible light source failure. (1) check the light source lamp is damaged, remove the lamp with a multimeter to check, the light is good, and the light source lamp voltage test, the voltage value test is 0V, the normal value should be 11V Left and right. The 6A fuse of the power board is also not blown.