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家用录像机在电路部分工作正常的情况下出现图像上下抖动,像虚或周期性干扰噪波带,除与导带柱高度、音控磁头角度、X值调节螺钉高度有关外,还与张力调节机构的制动带松紧度有很大的关系。笔者曾修过此类故障机数台,现举两例分析检修如下: 例一机型:松下NV—370 故障现象:图像上下抖动,像虚,严重时场不同步,上下跑动,经调节跟踪旋扭,导带柱高度等,图像质量虽有变化,但故障现象仍然存在。但声音正常。
Household recorders in the circuit part of the work under normal circumstances appear under the image jitter, such as virtual or periodic interference with the noise band, with the guide column height, sound control head angle, X value screw height adjustment, but also with the tension adjustment mechanism Braking belt tension has a great relationship. The author has repaired several such failure machine, is now analyzed in the maintenance of two cases are as follows: Example One model: Panasonic NV-370 Fault phenomenon: the image up and down jitter, like virtual, serious time out of sync, up and down, adjusted Tracking twist, lead column height, although the image quality changes, but the fault still exists. But the sound is normal.