STORZ 20134020型腹腔镜冷光源电路故障维修二例  

Two Cases of Fault Maintenance Analysis in STORZ 20134020 Laparoscopic Cold Light Source Circuit

作　　者：赵东升[1] 孔康辉 张龙[1] ZHAO Dongsheng;KONG Kanghui;ZHANG Long(Department of Medical Equipment,He’nan Provincial People’s Hospital,Zhengzhou He’nan 45003,China)

机构地区：[1]河南省人民医院医学装备部,河南郑州450003

出　　处：《中国医疗设备》2022年第6期175-178,共4页China Medical Devices

摘　　要：本文介绍了STORZ 20134020型腹腔镜冷光源使用中出现的两例故障,故障一为使用中突然关机,无法再次开机,经检查故障原因为主机保险管烧坏、主控电路板损坏;故障二为冷光源开机显示正常,氙灯灯泡点不亮。通过反求电路原理图方法,画出电路板关键故障区域电路原理图,通过故障分析查找到损坏的元器件是ML4824IS1功率因数复合控制芯片、场效应管P12NM50、贴片三极管K2T、贴片二极管T4、二极管RURP3060、高压放电管EPCOS5000,设备修复成功。本文的维修故障分析提出了反求电路原理图分析电路板故障的方法,是一种芯片级维修技能提升的方法,可供维修同行参考。To introduce two fault cases in the use of STORZ 20134020 cold light source.The first fault was sudden shutdown in use,and could not be started again.After inspection,the cause of the fault was that the main engine fuse was burned out and the main control circuit board was damaged.The second fault was that the cold light source was turned on and the display was normal,and the xenon lamp bulb did not light up.Through the reverse circuit schematic method,circuit schematic diagram of the critical fault area of the circuit board was drawn.Through fault analysis,the damaged components were found to be ML4824IS1 power factor compound control chip,field effect tube P12NM50,patch triode K2T,patch diode T4,diode RURP3060 and high voltage discharge tube EPCOS5000,and the equipment was successfully repaired.The fault maintenance analysis in this paper put forward the method of analyzing circuit board fault by reverse circuit schematic diagram,which should be a method to improve the maintenance skills of chip level,and provide reference for the maintenance peers.

关 键 词：冷光源 ML4824IS1芯片 反求电路原理图法 电路故障维修分析 芯片级维修 

分 类 号：TH7[机械工程—仪器科学与技术]