录像机是记录和重放视频和音频信号的设备,要得到良好的图像和音质,必须保证磁头与磁带之间接触良好,使磁头准确地跟踪磁迹或按规定的格式记录信号。由于记录和重放视频信号的频率很高,磁头与磁带之间的接触不良会导致图像质量下降,严重时出现无图像现象。因此,录像机的日常维护与保养对于延长机器的使用寿命,提高图像质量是非常必要的。1 录像机的日常维护 VCRs are devices for recording and reproducing video and audio signals. For good images and sound quality, it is important to ensure good contact between the heads and the tapes, to enable the heads to accurately track the tracks or to record signals in the prescribed format. Due to the high frequency with which video signals are recorded and played back, poor contact between the magnetic head and the magnetic tape leads to deterioration in image quality and occurrence of no image in severe cases. Therefore, the daily maintenance of video recorders and maintenance of the machine to extend the service life, improve image quality is necessary. 1 Recorder’s routine maintenance