迈瑞DC-6彩超扇形区无回声图像故障维修

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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);font-size: 15px;box-sizing: border-box !important;word-wrap: break-word !important;visibility: visible !important;width: auto !important;"  /></p><p style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-size: 15px;"><strong><span style="color: rgb(0, 0, 0);font-family: 宋体;">故障现象：</span></strong><span style="color: rgb(0, 0, 0);font-family: 宋体;"></span></span></p><p style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"><br  /></span></p><p style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">迈瑞DC-6彩超正常开机后，扇形区无回声图像，探头在非冻结状态下没有超声正常发射的吱吱吱声响。</span></p><p style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">&nbsp;</span></p><p style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-size: 15px;"><strong><span style="color: rgb(0, 0, 0);font-family: 宋体;">故障分析与处理：</span></strong><span style="color: rgb(0, 0, 0);font-family: 宋体;"></span></span></p><p style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"><br  /></span></p><p style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">迈瑞DC-6彩超系统由探头模块，发射模块，接收模块，连续波模块，波束合成模块，B/M型信号处理模块，彩色血流信号处理模块，多普勒信号处理模块，DSC模块，CPU系统，ECG心电模块，输入输出模块等组成。其概略的功能框图如下：</span></p><p style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">&nbsp;</span></p><section style="text-align: center;line-height: 1.5em;"><img class="rich_pages" data-ratio="0.9126691266912669" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_png/dx3KibwtDhveFQXloKCZedBdHP1Fah3ibqemtodYx49eZ9vJ9O56SvjzMjZzv2eUChb1ccic0coNLqTQDod3tZwXA/640?wx_fmt=png" data-type="png" data-w="813" style=""  /></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">对于此类故障，机器可以正常启动，扇形区无回声，一般是探头、发射端、接收端的故障，由于机器可以正常开关机，首先切换探头，发现机器上三把探头都是同样的故障，而三把探头出现同样故障的概率极低，再取一把其中同型号完好的探头上机测试，发现故障依旧，由此可以排除探头的可能性。而探头在非冻结状态下没有超声正常发射的吱吱吱声，首先超声波的发射已经不正常，也排除了接收模块故障的可能性，基本可以确定故障在发射端。</span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"><br  /></span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">根据迈瑞DC-6彩超系统的功能原理，此故障可以初步判断为两个方面：</span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"></span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"></span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"></span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"></span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">1、发射板引起，而发射板的主要功能是高压脉冲的形成，发射时序的产生，发射电路由两部分组成：发射时序电路及发射驱动电路，发射时序电路产生低压发射脉冲，经发射驱动电路，变为高压发射脉冲驱动阵元。</span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"><br  /></span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">2、电源故障，而电源系统主要由四块电源板组成：（1）PFC板，（2）+5V板，（3）-5V板，（4）PHV板。其中PFC板的主要功能是进行AC-DC变换，为+5V板、-5V板提供+390V稳恒电源及PWM控制电路电源。+5V板的主要功能是进行DC-DC变换，将PFC板输出的+390VDC转换为隔离的+5V和+3.3V输出。-5V板的主要功能是进行DC-DC变换，将PFC板输出的+390VDC变换为隔离的+12V、-12V和-5V三组电压输出。PHV板的主要功能是将-5V板输出的±12V变换为±95V和4路程控高压 （±5V-±80V）输出给探头模块和发射模块所需要的高压以驱动阵元发射超声波。</span><br  /></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"><br  /></span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">由此可以判定会引起此类故障的板件有发射板、PHV板、-5V板，然后运行机器的自检程序，发现4路程控高压自检失败。由此判定为PHV板或者-5V板的故障，因为如果PHV板的程控高压没有输出，有可能会是-5V板的±12V没有输出导致，下一步通过在-5V板上把±12V的输出端引线出来测量，发现±12V输出正常，分别为+12V、-12.1V。由此可以判定为PHV板引起了这台迈瑞DC-6的扇形区无回声图像故障，更换PHV板后，故障排除，机器可以正常使用。</span></section><section style="margin-top: 3px;margin-bottom: 3px;text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">&nbsp;</span></section><section style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-size: 15px;"><strong><span style="color: rgb(0, 0, 0);font-family: 宋体;">维修总结：</span></strong><span style="color: rgb(0, 0, 0);font-family: 宋体;"></span></span></section><section style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;"><br  /></span></section><section style="text-align: justify;text-indent: 0em;line-height: 1.5em;"><span style="font-family: 宋体;color: rgb(0, 0, 0);font-size: 15px;">在此故障维修过程中，对于熟悉机器的工作原理很重要，这样在维修过程中就可以通过机器的工作原理一步一步去分析故障所在点，避免在维修过程中走太多弯路。然而机器在使用的过程中也要注意定期维护保养，及时排除由于散热、电压异常、接地异常、插头松动、排线接口松动、灰尘积压等异常情况，避免由此造成严重的机器故障。</span><span style="color: rgb(0, 0, 0);font-size: 16px;font-family: 宋体;"></span></section><p><br  /></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;">赞<span style="max-width: 100%;line-height: 25px;">是一种友谊 |&nbsp;<strong style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;">分享</strong>传递智慧</span></span><br style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"  /></p><p style="white-space: normal;max-width: 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!important;word-wrap: break-word !important;"><strong style="max-width: 100%;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;color: rgb(95, 73, 122);line-height: 24.381px;text-align: justify;box-sizing: border-box !important;word-wrap: break-word !important;"><span style="max-width: 100%;color: rgb(0, 0, 0);line-height: 25px;text-align: center;box-sizing: border-box !important;word-wrap: break-word !important;"><strong style="max-width: 100%;white-space: normal;font-family: 微软雅黑;color: rgb(171, 25, 66);box-sizing: border-box !important;word-wrap: break-word !important;">，您身边专业超声维修专家</strong></span></strong></strong></strong></strong></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, 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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; 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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: 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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>