Abstract：In this paper, two GE LOGIQ E9 color Doppler ultrasound equipment of the same model but different versions were
taken as examples to analyze the maintenance of two front-end faults of the equipment, and summarize the ideas and methods in
the maintenance work. Case 1 introduced the fault of starting up caused by the GFI board connection at the front and back ends of
the equipment. The problem of two 22 uf-35 V capacitors was found out through the elimination method one by one, and the fault
was solved by replacing the capacitor. In case 2, the blue screen of the new version of LOGIQ E9 was caused by the fault of GTX
transmitter board. The fault was determined from the components that could not be removed on the MRX board by means of one by one
investigation and replacement, and the fault was eliminated by replacing the MRX CW board. The two faults reported in this paper are
relatively complex and are relatively rare front-end fault cases, which can provide some reference for medical and industrial colleagues.
王淑春，王大鹏. LOGIQ E9彩超前后端通信故障分析与维修探讨[J]. 中国医疗设备, 2022, 37(7): 170-173.
WANG Shuchun, WANG Dapeng. Communication Fault Analysis and Maintenance of LOGIQ E9 Color Doppler Ultrasound. China Medical Devices, 2022, 37(7): 170-173.
