SuperMark 1.5T MR维修案例四

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                    <p><p><img src="image/20201019/1bd08b695d5fd805cb63ee05a2610294_1.jpg" /></p></p><p><br  /></p><p><qqmusic scrolling="no" frameborder="0" musicid="7000346" mid="" albumurl="https://y.gtimg.cn/music/photo_new/T002R68x68M0000001AuuE34ljKE.jpg" audiourl="" music_name="&nbsp;p" singer="Los&nbsprofesores&nbsp;Cantantes&nbsp;-&nbsp;El&nbsp;Abecedario" play_length="109" src="https://mp.weixin.qq.com/cgi-bin/readtemplate?t=tmpl/qqmusic_tmpl&amp;singer=Los%20Profesores%20Cantantes%20-%20El%20Abecedario&amp;music_name=P%20p&amp;albumurl=https%3A%2F%2Fy.gtimg.cn%2Fmusic%2Fphoto_new%2FT002R68x68M0000001AuuE34ljKE.jpg&amp;musictype=1" musictype="1" otherid="" albumid="0001AuuE34ljKE" jumpurlkey=""></qqmusic></p><p><br  /></p><p>一故障现象：<span>安装完成后，扫描水膜，图像均衡异常，下图是分别是加图像均衡与不加均衡的图像</span></p><p><br  /></p><p><p><img src="image/20201019/fc62349d5058fe28b3bc76c245b87e69_2.png" /></p></p><p><span><br  /></span></p><p><span>不加图像均衡，灰度测量结果</span></p><p><span><br  /></span></p><p><p><img src="image/20201019/b74151bfff500b16c66bfe44adcd1d05_3.png" /></p></p><p><br  /></p><p>二故障分析：<span>1.分别用头线圈和膝线圈扫横断测试，结果一样。</span></p><p><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;2.主要检查线圈切换 连线，通讯部分。</span></p><p><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;3.用软件做通讯测试</span></p><p><span></span></p><p><p><img src="image/20201019/452199a1c7617b381b893399de0544e4_4.jpg" /></p></p><p><br  /></p><p><p><img src="image/20201019/452199a1c7617b381b893399de0544e4_4.jpg" /></p></p><p><p><img src="image/20201019/452199a1c7617b381b893399de0544e4_4.jpg" /></p></p><p><span><br  /></span><br  /></p><p><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;4.用body线圈扫描测试，自发自收，结果没有图像显示。可以将故障锁定在，发射线圈，发射线圈控制盒</span></p><p><p><img src="image/20201019/d79c574c660be73f7dc8936aa8f1b6b7_7.jpg" /></p></p><p><br  /></p><p><span></span><br  /></p><p><span>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 5RF射频电源盒24v电源输出，到通道信号接收盒，在测量其输出电压为10-10.4v，在输入到发射控制盒。</span></p><p><p><img src="image/20201019/cac803baad97cbef08caf3ef3eded1e8_8.jpg" /></p></p><p><p><img src="image/20201019/8356b26a78acfc96ccb5dcd126d433e2_9.png" /></p></p><p><span></span><br  /></p><p><span>&nbsp; 三，故障解决:跟换BCS控制线，测试发射线圈控制盒。故障解决，图像均衡恢复正常</span></p><p><span>&nbsp; &nbsp;</span></p><p><span>&nbsp; &nbsp; &nbsp; 四，总结:图像均衡，通讯测试，线圈切换，相关部件线路检测。2.练好基本功，具备电子电路基本检测维修能力，更重要。</span></p><p><span><br  /></span></p><p><span><br  /></span></p><p><span></span></p><p><p><img src="image/20201019/7822a4e2249e86a45760fbbfc1675e38_10.gif" /></p></p><p><span></span><br  /></p><p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</p><p><br  /></p>