论文部分内容阅读
一台索尼MDP型影碟机可重放A面节目,也能正常选曲,但重放过程中若按停止键,指示灯就出现闪动现象,所有按键均失效,而后停机保护,若开机后就按B键,选择放B面,则会立即停机保护。 这种故障看起来较为奇特,但如仔细分析就不难看出:由于重放A面碟片时能选择节目,说明主导轴电机及伺服电路激光头及其聚焦、循迹、进给等电路基本是正常的。此时,可在重放A面时关机(按STOP
A Sony MDP-type player can play A-side programs, but also the normal song, but if you press the stop button during playback, the indicator appears flashing, all keys are invalid, and then stop protection, if the boot Press B key, choose to put B surface, it will immediately shut down protection. This fault looks strange, but careful analysis is not difficult to see: As replay A surface disc to select programs, indicating the main axis of the servo motor and the servo head and its focus, tracking, feed and other circuits is normal. At this point, you can turn off the machine while playing Back Side A (press STOP