欧陆直流调速器维修590C***统一检修服务中心上海***欧陆直流调速器维修，先检查后报价，没修好不收任何费用，一个电话解决所有疑问！欧陆590直流调速器维修案例一故障现象：欧陆590直流调速器不能调速。检查分析：经检查+10V电压基准电源为2V左右，-10V电压基准电源为-7V左右，查看有一IC发热很大，更换后-10V电源正常，但+10V电源为+13V，再测量此IC附近有2个贴片电阻烧断，更换后&plu***n;10电源正常，接上马达试机调速运行正常。欧陆590直流调速器维修案例二故障现象：LCD黑屏（但底板电源正常面板的正常指示灯及运行指示灯闪）故障分析：造成LCD黑屏的原因有两种：一是电源供给5V不正常；二是程序初始化未能正常执行。***初用示波器观测单片机80C196KC晶振输入波形基本正常但有间歇性振荡幅度突降现象（间歇性周期约为5MS）单片机I/O输出数据也为间歇性中断输出（无数据状态且频率一致）因此故障电路指向5V电源及单片机的复位端信号正常与否？结果表示:复位端正常启动应为H电平而现为一脉冲，显然是这一脉冲导致I/O输出数据间歇性中断。+5V电源也有间歇性突降至4V现象，造成+5V电源突降4V的可能，明显是电路中有元件受损跟随于这一间歇频率瞬时短路现象，从而造成单片和复位不成功，为此特意取消单片机电源监控复位保护信号MAX825芯片启动电源，短路故障（ULN2003发烫）欧陆直流调速器维修包括以下系列产品：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/,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/,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/,591P/0830/500/,590P/0830/500/,591P/0380/600/,590P/0380/600/,591P/0500/600/,590P/0500/600/,591P/0725/600/,590P/0725/600/,)