Abstract：This paper analyzed two cases of UHI-3 laparoscopic pneumoperitoneum machine and electrical source fault and
maintenance situation of main control board fault. Through reduction by PCB circuit diagram restoration, the circuit analysis,
respectively by the replacement of 7815 chips power panel, main control board to replace analog switch DG408DY chips, the chip
level maintenance was implemented. It saves the maintenance cost effectively, reduces the operation cost.
赵东升，孔康辉. 奥林巴斯UHI-3腹腔镜气腹机两例电路故障维修分析[J]. 中国医疗设备, 2022, 37(5): 178-181.
ZHAO Dongsheng, KONG Kanghui. Maintenance Analysis of Two Circuit Faults of Olympus UHI-3 Laparoscopic Pneumationeum Machine. China Medical Devices, 2022, 37(5): 178-181.
