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家用录象机中,最具有特征的部分是将磁带从带盒内拉出,引到磁头鼓上的加载机构。由于加载机构不同而形成了 VHS与β两种类型的家用录象机。当今世界上 VHS 录象机占了大多数,在我国使用也较多,所以本文主要介绍 VHS 录象机机芯的构造及其常见故障。VHS 录象机采用平行加载、M 形走带方式。图1是 VHS 录象机机芯的走带系统示意图。翻开 VHS录象带盒背面,可以看到前部开有许多孔,当磁带插入录象机,下降至正常位置时,供带侧直导柱与斜导柱以及卷带侧直导柱与斜导柱构成的两组引带导柱、张力
The most characteristic part of home video recorders is the loading mechanism that draws the tape out of the tape cartridge and onto the head drum. VHS and β are two types of home video recorders because of different loading mechanisms. In today’s world, VHS video recorders account for the majority and are used more in our country. Therefore, this article mainly introduces the structure of VHS video recorders and its common faults. VHS video recorder with parallel loading, M-shaped tape way. Figure 1 is a VHS tape recorder movement system diagram. Open the back of the VHS tape cassette, you can see a lot of holes in the front open, when the tape into the video recorder, down to the normal position, the supply side of the guide column and oblique guide column and the tape side guide column and Inclined guidepost composed of two sets of guide pins, tension