上海佐度电子科技有限公司

专业工业电路板维修，工业自动化维修，修复快，备件充足，欢迎广大客户来电咨询！

维修热线：021-67684390

联系人：刘先生 18930489720

佐度网站：http://www.zuodu.tk
                    http://www.zuodukeji.cn.alibaba.com

佐度 qq:  2686726863

佐度邮箱:zuodukeji@163.com

公司地址:上海市新南路1259弄119号

实例一 欧陆直流调速器维修
毛病景象：欧陆 590 直流调速器不能调速。
反省剖析：经反省 +10V 电压基准电源为 2V 左右， -10V 电压基准电源为 -7V 左右，检查有一 IC 发热很大，改换后 -10V 电源正常，但 +10V 电源为 +13V ，再测量此 IC 左近有 2 个贴片电阻烧断，改换后± 10 电源正常，接下马达试机调速运转正常。
实例二 欧陆直流调速器维修

毛病景象： LCD 黑屏（但底板电源正常面板的正常指示灯及运转指示灯闪）
毛病剖析： 形成 LCD 黑屏的缘由有两种：一是电源供应5V不正常；二是顺序初始化未能正常执行。最后用示波器观测单片机 80C196KC晶振输出波形根本正常但有间歇性振荡幅度突降景象（间歇性周期约为 5MS ）单片机 I/O 输入数据也为间歇性中缀输入（有数据形态且频率分歧）因而毛病电路指向 5V 电源及单片机的复位端信号正常与否？上海欧陆直流调速器维修
后果表示: 复位端正常启动应为 H 电平而现为一脉冲，显然是这一脉冲招致I/O输入数据间歇性中缀。+5V 电源也有间歇性突降至 4V 景象欧陆直流调速器维修，形成 +5V 电源突降4V 的能够，分明是电路中有元件受损跟随于这一间歇频率瞬时短路景象，从而形成单片和复位不成功，为此特意取消单片机电源监控复位维护信号 MAX825 芯片启动电源，短路毛病（ ULN2003 发烫）欧陆直流调速器维修呈现，换上新的 ULN2003 启通电正常。（仅供参考）

上海EUROTHERM欧陆直流调速器维修:

591P/0015/220/,590P/0015/220/,591P/0035/220/,590P/0035/220/,591P/0015/500/,590P/0015/500/,591P/0035/500/,590P/0035/500/,591P/0040/220/,590P/0040/220/,591P/0070/220/,590P/0070/220/,591P/0110/220/,590P/0110/220/,591P/0165/220/,590P/0165/220/,591P/0040/500/,590P/0040/500/,591P/0070/500/,590P/0070/500/,591P/0110/500；

上海EUROTHERM欧陆直流调速器维修：

590P/0110/500/,591P/0165/500/,590P/0165/500/,591P/0180/220/,590P/0180/220/,591P/0270/220/,590P/0270/220/,591P/0180/500/,590P/0180/500/,591P/0270/500/,590P/0270/500/,591P/0380/220/,590P/0380/220/,591P/0500/220/,590P/0500/220/,591P/0725/220/,590P/0725/220/,591P/0830/220/,590P/0830/220/,591P/0380/500/,590P/0380/500；

上海EUROTHERM欧陆直流调速器维修：

591P/0500/500/,590P/0500/500/,591P/0725/500/,590P/0725/500/,591P/0830/500/,590P/0830/500/,591P/0380/600/,590P/0380/600/,591P/0500/600/,590P/0500/600/,591P/0725/600/,590P/0725/600/,591P/0830/600/,590P/0830/600/,591P/0380/220/,590P/0380/220/,591P/0500/220/,590P/0500/220/,591P/0725/220/,590P/0725/220/,591P/0830/220/,590P/0830/220/,591P/0380/500/,590P/0380/500/,591P/0500/500/,590P/0500/500/,591P/0725/500/,590P/0725/500；

上海EUROTHERM欧陆直流调速器维修：

591P/0830/500/,590P/0830/500/,591P/0380/600/,590P/0380/600/,591P/0500/600/,590P/0500/600/,591P/0725/600/,590P/0725/600/,591P/0830/600/,590P/0830/600/,591P/1580/220/,590P/1580/220/,591P/1580/500/,590P/1580/500/,591P/1580/600/,590P/1580/600/,591P/1580/220/,590P/1580/220/,591P/1580/500/,590P/1580/500/,591P/1580/600；

上海EUROTHERM欧陆直流调速器维修：

590P/1580/600/,591P/1200/500/,590P/1200/500/,591P/1700/500/,590P/1700/500/,591P/2200/500/,590P/2200/500,591P/2700/500/,590P/2700/500/,591P/1200/690/,590P/1200/690/,591P/1700/690/,590P/1700/690/,591P/2200/690/,590P/2200/690/,591P/2700/690/,590P/2700/690/,591P/1200/500/,590P/1200/500/,591P/1700/500/,590P/1700/500/,591P/2200/500/,590P/2200/500/,591P/2700/500/,590P/2700/500/,591P/1200/690/,590P/1200/690/,591P/1700/690/,590P/1700/690/,591P/2200/690/,590P/2200/690/,591P/2700/690/,590P/2700/690。