1. Department of Medical Equipment, Xiaoshan TCM Hospital of Hangzhou, Hangzhou Zhejiang 311201, China丨
2. Department of Medical Equipment, Kaili Hospital of Traditional Chinese Medicine, Kaili Guizhou 556000, China
Abstract：Two different types of combined ball tube medical X-ray machines reported “inverter failure” and “over-current protection”
error messages respectively during the exposure process. Based on these information, this paper analyzed the structural characteristics
and fault phenomenon of the combined ball tube X-ray machine. By using simple maintenance tools such as multimeter, the electrical
parameters of key nodes such as inverter and high voltage generator were measured, and then it was judged that the fault was caused
by the soft breakdown of high voltage diode (silicon stack) and poor vacuum degree of the ball tube. The machines were repaired
after replacing the faulty components. Through these two cases of successful repair of the combined ball tube medical X-ray machine,
it can be used as a reference for medical workers to identify and repair this kind of fault.
于乃群1，王明刚1，钱东燕1，刘荣俊2. 组合球管式医用X线机维修两例[J]. 中国医疗设备, 2021, 36(6): 175-178.
Yu Naiqun1，Wang Minggang1，Qian Dongyan1，Liu Rongjun2. Two Cases of Maintenance of Combined Ball Tube Medical X-ray Machine. China Medical Devices, 2021, 36(6): 175-178.
