通过这个案例，让你更了解GE vivid7的维修

admin · 发表于 2020-10-19 22:38:09

<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: 578px;" /><img class="rich_pages js_insertlocalimg" data-ratio="1" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_png/dx3KibwtDhve4Cqvick4U2RMZxSzhv0UAoxPze1Xz7zKMeFNupfQv1LQ2iaxpJHPbVg0lPQFIYuhsSyxTOiceLk6HA/640?wx_fmt=png" data-type="png" data-w="400" style="width: 400px;height: auto;" /><p style="max-width: 100%;min-height: 1em;font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", &quot

ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;overflow-wrap: break-word !important;">机器类型：GE彩色超声多普勒诊断仪<p style="max-width: 100%;min-height: 1em;font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", &quot

ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;overflow-wrap: break-word !important;">机器型号：GE Vivid 7<p style="max-width: 100%;min-height: 1em;font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", &quot

ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;overflow-wrap: break-word !important;"> <section>故障案例一</section>1、故障现象打开电源，按On/Stanfby，超声诊断仪无法正常启动。（1）故障分析：由于Vivid 7硬件由前端和后端组成，根据Vivid 7开机启动顺序分析其2、故障分析①判断机器是前端部分还是后端部分的故障原由而导致无法正常启动；②对机器后端进行单独测试，检查其能否正常启动。机器后端主要由微星双核主板、ATX电源、AGP显卡、硬盘、ECG卡、ETHERNET卡、PCVIC板以及PC2IP2B板等组成。3、故障排除①将机器后端部件从主机上搬下，拆开后端机箱，输入220V交流电源给后端；②找到主板的PW-ON跳线，短路6/8脚（如图1所示）<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

ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;widows: 1;"><img data-backh="188" data-backw="314" data-ratio="0.5987261146496815" src="http://mmbiz.qpic.cn/mmbiz_png/dx3KibwtDhve4Cqvick4U2RMZxSzhv0UAo1PYicvwBFf2B6VpX2AzBTTdp1ibsAYqrZbpgQCnEavuBCqr3BADia9IjQ/640?wx_fmt=png" data-type="png" data-w="314" style="width: 100%;height: auto;" /></section>③当发现后端部分仍然不能正常启动则需继续确认是主板问题还是ATX电源问题；④找到主板上的电源板接线座，用一节短线连接短路13/14（黑色和绿色）接头，此时后端电源开关畅通；⑤将交流220V输入后端，依据ATX电源标识测试各脚电源电压，发现脚1/2/11均无3.3V电压，判断为后端ATX电源存在问题，对3.3V电源部分进行维修，修复电源后上机测试，机器启动正常，故障排除。 故障案例二1、故障现象Vivid7 BT04彩色图像质量很差，但使用心脏探头（M4S）上的彩色图像显示正常，高频腹部探头的彩色故障。<img class="rich_pages" data-backh="383" data-backw="578" data-ratio="0.663013698630137" data-s="300,640" src="http://mmbiz.qpic.cn/mmbiz_jpg/dx3KibwtDhve4Cqvick4U2RMZxSzhv0UAo8AAKEV8Pj10icE8rf6uJMnvpSnyJeRk3xRfy3NWEicFx9M67cibZB1GCA/640?wx_fmt=jpeg" data-type="jpeg" data-w="730" style="width: 100%;height: auto;" />2、故障分析彩色图像故障如图所示，主要集中在机器的发射和高压部分，与软件的关系不大3、故障排除①更换探头插口后故障依旧；②调节图像的频率参数后故障依旧；③调节增益到最低，发现现象有改变；④进入系统测试，F2进入service下的system test，前段所有测试均通过，但发射板（TX）不能测试；⑤因心脏探头图像正常，依据图像形成原因判断，心脏探头是利用相控阵相控发射，可能是发射通道出现问题；⑥该机型带有两块TX发射板，交换TX发射板后故障立即消失，但其他功能有些损失，更换1块TX发射板后故障排除。 <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

ingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;widows: 1;">-end- </section><p style="font-variant-numeric: normal;font-variant-east-asian: normal;white-space: normal;max-width: 100%;min-height: 1em;font-family: -apple-system-font, BlinkMacSystemFont, "Helvetica Neue", &quot

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