Abstract：Objective To share the maintenance experience of medical equipment, and exchange learning with peers according to the
power failure of power knives FX-8C, headlights, radiation dose detector and continuous blood filter. Methods This work was done
by understanding four device principles and components, using an oscilloscope, multimeter for circuit testing, finding faulty circuit
signal phenomena, interpreting chip data sheets, understanding chip principle and peripheral circuit configuration. Results Boardlevel
circuit analysis was performed on medical equipment failures encountered during routine maintenance work, faulty devices
were identified, and repairs were successfully completed. Conclusion According to our experience in equipment power supply
maintenance, industry workers have an in-depth understanding of the functional structure of the chip and improve the maintenance
capability of the independent board level, which is conducive to better serving the hospital.
马继鹏，赵杨，李德龙，孔德友. 医疗设备电源芯片级维修4例及经验总结[J]. 中国医疗设备, 2019, 34(12): 165-168.
MA Jipeng, ZHAO Yang, LI Delong, KONG Deyou. Four Cases of Chip Level Maintenance Experience of Medical Equipment Power. China Medical Devices, 2019, 34(12): 165-168.
