单位UF-50近日开机启动自检、激光电源稳定、自动清洗、背景检查后,背景值显示均为横杠并提示:laser radiation error,Help显示:laser oscillation故障。
阅读维修手册,该故障机器检测依据是:Regulation signal from laser power unit is monitored when laser output is 7.5 mW (in analysis). When the laser power unit output current becomes 8 A or more, or 2 A or less for two consecutive(连续的) times, the error occurs. If this, Laser Output Error is issued.
故障产生后:the current analysis will be continued. The data will not be displayed. System is recovered by replacing laser tube. (The error is temporary recovered by reducing the laser output power.)官方维修手册让更换laser tube。暂时解决方法为降低激光输出功率。
调节NO 9 PCB 2101上的VR3(电流)VR4(功率),逆时针不超过一圈,开机后自检通过,但样本各项结果均低,尤其RBC。
因为有着8100激光相机光学系统除尘解决P602故障的经历,便尝试在更换氩激光管组件前检查激光光学通道部件是否有灰尘。右侧板拿下,去掉承重激光装置的横担。铁盒上部为氩激光管,下部为激光通道与测量装置。正对下部分外罩两个螺丝与底部一固定螺丝卸下拿掉外罩,可看到通路部分。
用棉签轻擦M2,确实有灰尘。擦净后装机试验,无报警,背景值正常,质控结果正常。
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