一、故障现象按动床身动作开关,电动诊视床床身不能直立或平卧。二、分析与检修该机诊视床床身直立或平卧是通过床身转动电机的动作来实现的。按动床身动作开关,电机稍动后停止,诊视床不动。根据此现象,初步判断:①诊视床由于机械故障而被卡死,②电机 First, the failure phenomenon Press the bed action switch, electric bed bed can not be upright or lying. Second, analysis and maintenance The machine bed as the bed upright or lying machine bed motor rotation to achieve the action. Press the bed action switch, the motor stopped after a slight movement, bed fixed bed. According to this phenomenon, a preliminary judgment: ① bed due to mechanical failure stuck, ② motor