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故障现象:该录像机按“出盒”键,带不出盒,机内发出“吱吱”声,几秒后机器自动停机,盒带符号不停闪动。分析与检修:接通电源,按“出盒”键,发现出盒驱动轮旋转,但相应带仓蜗轮不动。用手指轻拨蜗轮,带动皮带(在机器自动停机前),出盒正常,但插入像带再次出盒,故障依旧,怀疑带动蜗轮旋转矩不够。试给皮带涂些松香粉,故障排除,但几次出盒后故障又出现。观察驱动情况,发现带动蜗轮旋转至主动轮同轴有两皮带轮,上轮大、下轮小,目前驱动用下轮。试把皮带移
Symptom: The VCR press the “out of box” button, with no box, the machine issued a “creak” sound, the machine automatically shut down after a few seconds, the box symbol flashing. Analysis and Maintenance: Turn on the power, press the “out of the box” button and found that the box drive wheel rotation, but the corresponding belt warehouse worm does not move. Gently press the worm gear with your fingers to drive the belt (before the machine automatically shut down), out of the box normal, but inserted into the cassette again out of the box, the problem remains the same, suspected to drive the worm torque is not enough. Try to give the belt coated with rosin powder, troubleshooting, but after a few out of the box and then the fault appears again. Observed the driving situation and found that driving the worm wheel rotation to the drive wheel coaxial with two pulleys, the big wheel, the next round of small, the current drive with the next round. Try to shift the belt