东芝SSA-550A开不了机故障维修

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                    <p><img data-type="gif" class="__bg_gif" data-ratio="0.10555555555555556" data-w="720" src="http://mmbiz.qpic.cn/mmbiz/M2H0aGBjWUTRia7nqkArYeKZUqEfdmpNibMPiaZk4gvlWk5v5lUKyXhjJP4CENKQeQt5HI8zwcTCWJOkicfWJiatdJQ/640?wx_fmt=gif" style="white-space: normal;font-family: -apple-system-font, BlinkMacSystemFont, &quot;Helvetica Neue&quot;, &quotingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei UI&quot;, &quot;Microsoft YaHei&quot;, Arial, sans-serif;letter-spacing: 0.544px;background-color: rgb(255, 255, 255);color: rgba(0, 0, 0, 0.298);font-size: 15px;box-sizing: border-box !important;word-wrap: break-word !important;visibility: visible !important;width: auto !important;"  /></p><p style="line-height: 130%;"><strong><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">机器类型</span></strong><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">：彩色超声多普勒诊断仪</span></p><p style="line-height: 130%;"><br  /></p><p style="line-height: 130%;"><strong><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">机器型号：</span></strong><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">东芝SSA-550A</span></p><p style="line-height: 130%;"><strong><span style="font-size: 15px;font-family: 宋体;color: rgb(0, 0, 0);"><br  /></span></strong></p><p style="line-height: 130%;"><strong><span style="font-size: 15px;font-family: 宋体;color: rgb(0, 0, 0);"></span></strong><strong><span style="font-size: 15px;font-family: 宋体;color: rgb(0, 0, 0);">故障现象：</span></strong><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;">按下开机键，机器无反应，如下图：</span></p><p style="margin-left: 31px;line-height: 130%;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">&nbsp;</span></p><p style="text-align: center;"><img class="rich_pages" data-ratio="0.7514970059880239" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/dx3KibwtDhvciaBbC2M5z0XXh0usY3oRTHfPrYMFkeRvl1Ed24ILWNOdJonn6gd5rHicAeXZb3ia4u3WZRV5vve9xw/640?wx_fmt=jpeg" data-type="jpeg" data-w="1002" style=""  /></p><p style="text-align: center;"><strong style="text-align: justify;"><span style="font-size: 15px;font-family: 宋体;color: rgb(0, 0, 0);"><br  /></span></strong></p><p style="text-align: left;"><strong style="text-align: justify;"><span style="font-size: 15px;font-family: 宋体;color: rgb(0, 0, 0);">故障分析与原因：</span></strong></p><p style="text-align: left;"><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;"><br  /></span></p><p style="text-align: left;"><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;">由于机器不能开机</span><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;">，首先怀疑电源问题，拆开主机后面，插上电源，经测量，AC-AC部分输出电压正常，故排除AC-AC电源故障。</span><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;">现在重点排查AC-DC电源部分，接着拆开主机前面，经测量AC-DC电源没有电压输出，由此机器开不了机就是AC-DC损坏所致，把AC-DC电源拆出，如下图：</span></p><p style="text-align: left;"><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;"><br  /></span></p><p style="text-align: center;"><img class="rich_pages" data-ratio="0.7482587064676617" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/dx3KibwtDhvciaBbC2M5z0XXh0usY3oRTHS0eSFnuib0aIqriaAsdz6CgibxDf05Yia0Iqj7Zllo4lHVwrT0Mzia7gibsA/640?wx_fmt=jpeg" data-type="jpeg" data-w="1005" style=""  /></p><p style="text-align: center;"><strong style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;"><br  /></strong></p><p style="text-align: left;"><strong style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;">故障处理：</strong></p><p style="text-align: left;"><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;"><br  /></span></p><p style="text-align: left;"><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;">经过检查，是由于两个开关管损坏所致，更换同型号开关管，装机检查，机器开机正常。</span><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;">如下图：</span></p><p style="text-align: left;"><span style="color: rgb(0, 0, 0);font-family: 宋体;font-size: 15px;text-align: justify;"><br  /></span></p><p style="text-align: center;"><img class="rich_pages" data-ratio="0.7487586891757696" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/dx3KibwtDhvciaBbC2M5z0XXh0usY3oRTHHY4kOYAvROKRtkNptf7jLKUpRuVY4MVPbOmicmA9SmQObm0BCHsdf9A/640?wx_fmt=jpeg" data-type="jpeg" data-w="1007" style=""  /></p><p style="margin-left: 31px;line-height: 130%;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"></span><br  /></p><p style="line-height: 130%;"><span style="font-size: 15px;font-family: 宋体;color: rgb(0, 0, 0);"><strong><span style="font-family: 宋体;">维修总结：</span></strong></span></p><p style="line-height: 130%;"><span style="font-family: 宋体;font-size: 15px;color: rgb(0, 0, 0);"><br  /></span></p><p style="line-height: 130%;"><span style="font-family: 宋体;font-size: 15px;color: rgb(0, 0, 0);">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，熟悉电子元器件工作原理，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。</span></p><p style="white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;font-family: 微软雅黑;font-size: 16px;color: rgb(62, 62, 62);line-height: 25.6px;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;"><br  /></span></p><p style="white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;font-family: 微软雅黑;font-size: 16px;color: rgb(62, 62, 62);line-height: 25.6px;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><br  /></p><p style="white-space: normal;max-width: 100%;min-height: 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25.6px;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><br style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"  /></p><p style="white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;font-family: 微软雅黑;font-size: 16px;color: rgb(62, 62, 62);line-height: 25.6px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;text-indent: 0em;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">地址：广州市天河区高塘路235号时代E-PARK7栋801、802室&nbsp; &nbsp; &nbsp;</span></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;line-height: 1.75em;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">邮编：510507</span></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">电话：(+86)020-8722 8723 &nbsp; &nbsp;8764 5360 &nbsp; &nbsp;</span></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">传真：020-8722 8623</span></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">全国统一免费服务热线：400-020-6788</span></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;line-height: 24.381px;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">公司官网：http://www.parts-ultrasound.com/</span></p><p style="white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;font-family: 微软雅黑;font-size: 16px;color: rgb(62, 62, 62);line-height: 24.381px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;line-height: 1.75em;text-indent: 0em;font-family: Arial, Verdana, sans-serif;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">微信公众帐号：</span></p><p style="white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;font-size: 16px;text-align: left;box-sizing: border-box !important;word-wrap: break-word !important;"><img class="rich_pages" data-ratio="1" data-s="300,640" data-type="png" data-w="344" src="http://mmbiz.qpic.cn/mmbiz_png/dx3KibwtDhvcvQ5W66skZY3mYSqpoRYIMn3LOS0l9GkWVqSdiaw2RiclU8MiatfDmia3YvXxPRgDFiaZFibgUOEEfaYhA/640?wx_fmt=png" style="box-sizing: border-box !important;word-wrap: break-word !important;visibility: visible !important;width: 344px !important;"  /></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">维修咨询：QQ: &nbsp;712638 404</span><br style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"  /></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">设备咨询: &nbsp; QQ: &nbsp;712638 405</span></p><p style="white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;font-family: 微软雅黑;font-size: 16px;color: rgb(62, 62, 62);line-height: 24.381px;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;text-indent: 0em;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">软件咨询：QQ: 712638 406</span><br style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"  /></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">配件咨询：QQ: &nbsp; 712638 407</span></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">交流Q群：1106 11074</span></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">阿里店铺网址：https://renchengyiliao.1688.com</span></p><p style="text-indent: 0em;white-space: normal;max-width: 100%;min-height: 1em;letter-spacing: 0.544px;color: rgb(62, 62, 62);font-size: 12px;font-family: Arial, Verdana, sans-serif;line-height: 1.75em;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);font-size: 14px;box-sizing: border-box !important;word-wrap: break-word !important;">电子邮箱：sales@parts-ultrasound.com</span></p>