蓝韵Mirror2彩超自动关机故障维修

admin · 发表于 2020-10-19 22:38:54

<img class="rich_pages js_insertlocalimg" data-backh="253" data-backw="578" data-ratio="0.43859649122807015" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_gif/dx3KibwtDhvd30KriaSbvhoncZUg9ZbETjscR1rN5dSCfznIuBFJJWmiauFOFKJq6LKLDom0CYRBzWtBO9Qp0jHhw/640?wx_fmt=gif" data-type="gif" data-w="798" style="text-align: center;width: 100%;height: auto;" /> 机器类型：彩色超声多普勒诊断仪机器型号：蓝韵Mirror21、  故障现象：机器开机后会自动开关机。<img class="rich_pages js_insertlocalimg" data-backh="400" data-backw="561" data-ratio="0.7130124777183601" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_png/dx3KibwtDhvcuJWmuHBLvGLIGw8D8ib8qFEicKxoe8jicBAKfQtibmugvCuiap8nMTib37OTaTibqzeKQdEibhN28AHX7vA/640?wx_fmt=png" data-type="png" data-w="561" style="width: 100%;height: auto;" />2、  故障分析与原因： 根据故障现象分析，机器会自动开关机，首先开机把主板BIOS中的自动唤醒功能关闭，再开机测试，测试一段时间后，机器还是会自动关机，但不会自动开机。再排除电源故障，经过测试各输出电压均正常，故排除电源故障。怀疑主板故障引起，拆出清洁保养，重新上硅脂，上机测试，故障依旧，再拆出检测维修，经过测量，主板各输出电压信号正常，怀疑是BIOS的散热预设自动关机现象，把主板电池反扣放电，把BIOS的设置恢复默认值。装回主板开机测试，老化八小时机器正常，工作正常。<img class="rich_pages js_insertlocalimg" data-backh="292" data-backw="578" data-ratio="0.50625" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/dx3KibwtDhvcuJWmuHBLvGLIGw8D8ib8qFicH9OCQ5ib9hJce09p2ZoibVMexHBatkJ66Fzr8Q4LZwk36ZFZXfkWOsA/640?wx_fmt=jpeg" data-type="jpeg" data-w="1280" style="width: 100%;height: auto;" />3、  故障处理： 维修主板，装机检查，机器开机正常。 4、维修总结：在此故障的维修过程中，要熟悉机器的系统结构与系统功能原理，理解什么模块负责什么功能，理性分析，找出准确的故障点，从而排除故障，保证机器正常使用。 <section style="white-space: normal;text-align: center;"><span style="font-size: 12px;background-color: rgb(255, 255, 255);font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", &quot

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