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一、透视毫安失控现象:机器置于透视条件,踏下透视脚开关,无毫安指示(或低于正常透视毫安值)旋动透视毫安调节钮,毫安指示无变化。检查:发现1球管小焦点灯丝燃亮,但是不及正常亮度(发红),打开控制器的面板,可见透视毫安调节电位器W_2的电刷脱出,此故障在KD-400型机上经常发生。修复:将电刷复位即可。调节时注意防止调过头,以免电刷重复脱出。二、摄影电路不工作(不曝光) 现象:旋转阳极能起劲,摄影接触器SC不吸合,Y3、LJ继电器反复工作。原因:R_(14)电阻器开路,旋转阳极电路中的电压继电器YJ能工作,但不能自锁,
A perspective of the phenomenon of loss of control of the mA: the machine is placed in perspective conditions, step down foot switch, no milliamp indication (or lower than the normal perspective MA value) rotation perspective MA adjustment button, mA instructions no change. Inspection: It was found that a small bulb of the 1 bulb was lit, but it was not as bright as normal (red). Open the panel of the controller and see that the brush of the milliampere adjustment potentiometer W_2 came out. This fault often occurs on the KD-400. . Repair: Reset the brush. When adjusting, be careful not to overshoot, so as to avoid repeated brushing out. Second, the camera circuit does not work (no exposure) Phenomenon: Rotating anode can work hard, photography contactor SC does not pull, Y3, LJ relays work repeatedly. Reason: The R_(14) resistor is open circuit and the voltage relay YJ in the rotating anode circuit can work, but it cannot be self-locked.