一台ONE牌BCD—497型激光唱机使用一段时间后,放入唱片时不能执行聚焦搜索命令,显示disc(无唱片);偶尔能执行聚焦搜索,这表明为接触性故障。打开机壳,发现激光头会上下移动执行聚焦指令,只是唱片不会转动。拆下机芯,发现带动唱片转动的电动机是直 A ONE brand BCD-497 compact disc player can not perform a focus search command when discarded for a while, displaying disc (no record); occasional focus search is performed, indicating contact failure. Open the case and found the laser head will move up and down the implementation of the focus command, but the record will not rotate. Remove the movement and found that the electric motor that drives the record rotation is straight