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挪威天宝(Tandberg)语言实验室设备在我国外语教学中使用较多,在实际使用中我们发现该套设备常见故障是学生座录音机打不开磁带盒盖子,亦即eject功能失灵。根据我们几年的实践认为,对该套设备有关部件和电路的分析,发现这种故障是由于包括机械和电路两部分的伺服系统中某一环节不良所致。不过在确定是学生录音机故障之前,要排除不是由于教师主机控制部分的电源开关未关闭或主机与学生机之间的连接盒电路的故障。在确定是学生机故障之后,就可以从座位上取下学生机,并按故障是机械性的还是电气性的不同情况分别进行检修。 (一)机械伺服部分故障排除方法
The Norwegian Tandberg language laboratory equipment is used more in our foreign language teaching. In practice, we found that the common fault of this set of equipment is that the student tape recorder could not open the cassette cover, that is, the ejection function failed. According to our years of practice, the analysis of the relevant components and circuits of this equipment has been found to be caused by a faulty part of the servo system that includes both mechanical and electrical circuits. However, before determining that the student recorder malfunctions, troubleshoot problems that are not due to the power switch in the control section of the teacher not being switched off or the connection box between the main unit and the student machine. After the student machine is determined to be faulty, you can remove the student machine from the seat, and the failure is mechanical or electrical condition of the respective maintenance. (A) mechanical servo troubleshooting methods