XJJ-2型心脏急救监视装置。曾多次出现过除颤器机内和人体均不能放电的故障。故障现象:机内和人体都不能放电。监视器屏幕上无增辉信号;没听到15J_3高压继电器的吸合声。分析检修:因同步放电也由非同步除颤放电电路控制,机内及人体放电电路都是同一回路。故障肯定不是因电路外部控制开关 XJJ-2 cardiac emergency monitoring device. There have been many failures of the defibrillator and the human body can not discharge. Symptoms: the machine and the body can not discharge. There is no bright signal on the screen of the monitor; no sound of 15J_3 high voltage relay is heard. Analysis and maintenance: Due to synchronous discharge by the asynchronous defibrillation discharge circuit control, the machine and the human body discharge circuits are the same circuit. The fault is certainly not due to the circuit external control switch