目的 通过介绍联影医疗新产品UIH uCT528高压（发生器系统）故障维修案例,了解高压故障发生原因,厘清故障处理思路,从而有利于在解决用户问题同时降低其维修维护成本。方法 研究uCT528的高压的工作原理和相互关系,分析典型维修案例电路图,找到故障元件并更换。结果 通过芯片级维修,解决了设备故障,降低了维修成本,提高了维修效率。结论 本次典型维修案例分析可为更多医工同仁在处理高压故障问题时提供参考,如准确判断高压故障,了解测量点、电路图和厘清分析思路,精准找到故障点并加以修复。

Objective To understand the causes of high voltage faults and clarify the idea of equipment failure maintanence through introducing repair cases of new UIH uCT528 high voltage （generator system）, which is conductive to solving users’ problems while reducing maintenance costs. Methods The study achieved understanding of the working principle and interrelationships of uCT528 high voltage by analyzing typical circuit diagrams of repair cases, identifying faulty components, and replacing them. Results Through chip-level maintenance, equipment failures were resolved, maintenance costs were reduced, and maintenance efficiency was improved. Conclusion This typical maintenance case study can provide reference for medical colleagues in dealing with high voltage failures, such as accurately determining high voltage failures, understanding measurement points and circuit diagrams, and clarifying ideas to accurately find faults and repair them.