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1.松下(National)L15MC录像机主导轴驱动电路检修。松下L15MC录像机走带时伴音发颤,调音控磁头(ACE)组件无效。仔细辨听该故障机的声音,发现除伴音异常外,机器内部还周期性地发出“咯哒咯哒”的异常声,顺着声源找到主导轴与压带轮,用力抬起压带轮使之不接触主导轴,“咯哒”异常声消失。拆下主导轴电机检查,发现并无阻滞,电机转动灵活。
1. Panasonic (National) L15MC VCR drive shaft drive circuit maintenance. Panasonic L15MC VTR chattering, ACM components disabled. Carefully listen to the sound of the fault machine and found that in addition to abnormal sound, the machine also periodically issued a “slightly da little da” abnormal sound, along the sound source to find the capstan and the pressure pulley, hard lifting the pinch roller So do not touch the main axis, “slightly da” abnormal sound disappeared. Remove the capstan motor inspection and found no block, the motor rotation flexible.