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我院San-ei产2H71型线超声诊断议,近来监视器影像逐渐模糊不清,分辨能力不断下降。最后已到不能诊断的境地。机外检查:用示波仪检查电源,除波形轻微变形外余正常;B超监视器的亮度、对比度均很敏感;r校正功能和各功能键都正常。故障分析:故障的表现是以影像模糊不清、分辨力进行性变坏为主。所有的调整功能完全正常。很有可能是由于声波受阻所致。所以应重点检查换能器。经细心检查探头,发现其外壳胶合缝有裂隙,里面充满了耦合剂。把晶体、接连插头座、导线焊头等全部浸泡,形成了声波短路。排除故障:
Our hospital San-ei produced 2H71-line ultrasound diagnostic protocol, the recent monitor images gradually blurred, resolution ability continues to decline. Finally, we can not diagnose the situation. Off-machine inspection: check the power supply with the oscilloscope, with the exception of a slight deformation of the waveform outside the normal; B super-monitor brightness, contrast are very sensitive; r correction function and the function keys are normal. Failure Analysis: Fault performance is based on blurred images, progressive deterioration of the main resolution. All adjustment functions completely normal. Most likely due to obstruction of sound waves. So should focus on the transducer. After careful examination of the probe and found that the shell gluing cracks, which is full of coupling agent. The crystal, plugs one after another, wire soldering all soaked, forming a sonic short circuit. Troubleshoot