故障现象:开机,进入质控检测,按照程序依次进行,并显示信息如下:showing controller tests;XRS FILOI test started;loading mode 130kv, focuslarge, 100mA, 1.000s,……press START key to start the scan; scanning……;Measurement started;please wait until system is ready again,system is ready again;然后是ERROR in scan,for further information,view event log and/or rube history. 故障分析:从主菜单选择OPTIONS→EVENLOG敲入COMPUTER NAME 及密码在FAILITY中选择SERVICE并点击GO;显示event log 记录内容,其中有故障信息:XRSRAC01testaboutbyerror的记录.双击该记录,显示更详细的信息Possible cause(可能的原因):No voltage supply RAC(球管阳极),RAC defective,XTA高压)defecitive,D400 Main control(主控制板)defective, XRS(灯丝)MCB2-CTdefective,connection(连接)defective,Fuse(保险丝)defective.并附有处理措施1.Check fuses F1 and F2.2.Check connection W5111 Electronic box-XTA.3.check D400 x12. 4.Measure the rube stator at the rube, Each winding should measure approve 2.4欧 All windings should be isolated (open circuit)from ground.5.if this is not true,replace XTA.6.if the tube stator is ok,replace the RAC.7.Replace XRS(灯丝)MCB2-CT。8.Replace D400 Main-control.根据记录信息提示,故障的可能原因是球管阳极(RAC)供电电源异常;高压(XTA)异常;D400主控制板异常;灯丝(XRS)MCB2-CT板异常;连接异常或保险丝(Fuse)异常。 故障检修:首先打开龙门架后盖,检测并确认保险丝F1和F2正常;检测并确认高压电子盒(Electronic box-XTA)的连接头W5111正常;检测并确认D400板的连接头X12正常;检测并核准球管定子(tube stator)的每组线圈 (winding)的电阻为2.4欧,并对地都开路。根据记录信息提示接下来要做的事是更换XTA(高压),更换RAC(球管阳极),更换XRS(灯丝)MCB2-CT板,更换D400 Main control(主控制板)。考虑到XRS(灯丝)的MCB2-CT板在床及龙门架控制电路系统中也有一块MCB2-CT板,不妨把XRS(灯丝)的MCB2-CT板拆下,仔细核对MCB2-CT板的设置开关后,先换到床及龙门架控制电路系统中,开机,床及龙门架的运行正常,排除了XRS(灯丝)的MCB2-CT板有故障。剩下XTA,RAC及D400 Main control板。考虑到XTA及RAC价格相当贵(数十万元),决定先更换D400 Main control板(八千元)。电话通知西门子北京配件库,24小时后,D400 Main control板后,开机,故障排除。 检修总结:新一代西门子SYNGO界面的CT机的检测功能及故障信息非常丰富,用好这些信息对维修及维护机器大有帮助。 <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> |