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我院 KB400型 X 线机时常出现不曝光现象。经详细分析电路,逐步查找,终于找出故障部位,修复了机器。故障现象及检修过程:按摄片要求调整摄片条件,按下手闸,旋转阳极不运转,摄片继电器 RC 未工作。拨动床上下管球交换闸后,时而又可正常曝光,但不曝光的现象次数仍然较多。拆开机器控制台前护盖板,观察各继电器工作状况,见旋转阳极控制继电器 RA
KB400 X-ray machine in our hospital often appear not to be exposed. After a detailed analysis of the circuit, and gradually find, and finally find the fault site, repair the machine. Symptoms and maintenance process: According to the film requirements to adjust the filming conditions, press the hand brake, rotating anode does not work, film relay RC is not working. Turn the bed up and down the ball exchange switch, but sometimes normal exposure, but the number of times the phenomenon is still not exposed more. Open the machine console front cover, observe the working conditions of the relay, see rotating anode control relay RA