维修| SIEMENS X300彩超故障维修2

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故障现象

X300机器开机所有探头图像均有干扰。

故障分析

现场观察机器图像干扰情况，切换所有探头均在相同位置出现干扰。与科室人员沟通后，把机器推到另一房间接通电源开机，机器图像仍出现一样干扰，排除外界干扰可能，干扰原因来自机器本身。

一般彩超机器电源部分或通道板存在故障会导致图像出现干扰，更换DC主电源及TR板进行测试机器图像仍存在干扰且干扰情况没有改变，排除DC主电源及TR板故障可能。RC板是接收控制板，除实现超声波发射接收的控制功能外，还负责将TR板的接收数据进行模数转换；TI板是探头接口板，主要负责探头的连接和切换。最后更换TI板排除干扰故障。

故障总结

X300彩超机器结构较为简单，板块功能集成度较高，因此维修难度相比其它彩超机器较为简单，但也需要维修人员对于彩超机器工作原理有深刻了解，对于机器故障有充足的维修经验。

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