GE Optima 660螺旋CT扫描床故障分析与检修

Fault Analysis and Repair of GE Optima 660 Spiral CT Scanning Bed

本文针对此设备扫描床不能动作、扫描架定位灯不亮的故障现象,在分析了Optima660 CT的扫描床驱动电路原理基础上,找出了故障原因,该故障是由不明液体造成控制板GTCB短路造成的。为了防止床板压迫扫描架,需要更换床控制板GTCB后,进行一系列的调试校准,之后再调整床的高低限位位置、自动进退床位置。通过本文提及的方法解决故障后,CT机工作正常。

In view of the failure of the scanning bed and the failure of the positioning lamp of the scanning rack, we analyzed the driving circuit principle of the scanning bed of Optima660 CT, and found out the fault cause. The fault was caused by GTCB short circuit of the control board caused by unknown liquid. In order to prevent the bed plate from pressing on the scanning frame, the GTCB of the bed control board should be replaced and a series of debugging and calibration should be carried out. After that, the high and low limit position of the bed and the automatic stroller position should be adjusted. After solving the fault by the method mentioned in this paper, the CT machine works normally.