ＷＢ－７４微波治疗机故障一例山东省荷泽地区人民医院张继军（２７４０３１）故障现象：开机电源正常，三分钟延对高压指示灯亮，调节高压，ｍＡ表能正常调节输出，但输出天线头无输出。检修分析：按“从简至烦”原则，先检查输出线，用万用表测量，有短路，修复后试机，... WB-74 Microwave Therapy Machine Failure Case: Zhang Zejun, People’s Hospital of Heze District, Shandong Province (274031) Symptoms: The power supply is normal, the three-minute delay is on the high-voltage indicator light, and the high voltage is adjusted. The mA meter can regulate the output normally, but the output antenna head has no output. . Maintenance analysis: According to the principle of “from simple to annoying”, first check the output line, use a multimeter to measure, there is a short circuit, repair after the test machine, ...