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故障现象:伴音正常,图像屏幕上出现二条较粗的水平干扰线,严重时变成有声音无图像.检查分析:根据上述的故障现象,初认为,是磁带有折痕,换上新的录像带试机,故障依然存在。又估计是跟踪不佳,调节跟踪电位器至最佳处,故障现象不变.拆开该机上盖,仔细观察本机装载过程,发现供带引导柱,卷带引导柱都和相应的止动燕尾槽的终点还有一定距
Symptoms: the sound is normal, the image appears on the screen two coarser level of interference line, in severe cases, there is no sound image. Analysis: According to the above symptoms, initially thought, is a tape crease, put on a new video Test machine, the fault still exists. It is estimated that poor tracking, adjusting the tracking potentiometer to the best place, the phenomenon of the same breakdown.Can open the machine cover, carefully observe the process of loading and found that with the guide column, take the lead column and the corresponding stop Dovetail end there is a certain distance