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该机是西南医用设备厂生产的一种双床双球管固定X线机组。由于该机容量较大,计时器采用电子线路和另序曝光电路,结构较为先进。但由于一些元件质量不好,计时器常常会发生一些故障。现将我们在检修中遇到的一些故障介绍如下,供放射和检修人员参考。上下球管交换开关拨在上球管位,技术条件开关拨至透视摄影位。一、机器通电后,即嗅到控制台内有油漆烧焦味拆开控制台,合上电源,即可看到电子计时器电源变压器冒烟。切断电源,检查各整流元件,发现ZL_3桥式整流二极管有二只
This machine is a twin-bed double-tube fixed X-ray unit produced by Southwest Medical Equipment Factory. Due to the larger capacity of the aircraft, the timer uses electronic circuits and a separate exposure circuit, and the structure is advanced. However, due to the poor quality of some components, timers often malfunction. Some of the faults we encountered in the overhaul are described below for reference by radiation and maintenance personnel. The upper and lower tube exchange switches are placed on the upper ball position, and the technical condition switch is set to the perspective photography position. 1. After the machine is powered on, you can smell the burning smell in the console and open the console. After closing the power supply, you can see the electronic timer power transformer smoking. Cut off the power supply, check the rectifier components and find that there are two ZL_3 bridge rectifier diodes