X200—Ⅱ型X线机在透视过程中,串在透视高压初级的6安培额定保险熔断。连续两次换上,相继又熔断,故停用待修。我们根据操作者反应,在透视档作了短时间通电试验,发现管电流偏高,压降甚大,初步判断为高压部分有击穿短路的可能。首先把透视仟伏及毫安调节旋钮转到最 X200-Ⅱ X-ray machine in the perspective of the process, the series in the perspective of high-pressure primary 6 ampere rated fuse. Replaced two consecutive, one after another fuse, it is disabled for repair. According to the operator’s response, we conducted a short-time power-on test in the fluoroscope and found that the tube current is high and the voltage drop is very large, and the initial judgment is that the high-voltage part has the possibility of breakdown and short circuit. First of all, thousands of milliammeter and milliamp adjustment knob to the most