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2.机芯伺服系统的控制 CPU对机芯伺服系统控制内容有:激光头聚焦线圈和循迹线圈中电流大小和方向、进给电机和主轴电机旋转速度和方向以及机芯各种定序特技动作(选曲、快进、快退、碟片浏览)等。其中主控CPU(8032)内掩膜有逻辑程序,可在开机后按规定的逻辑程序对总线上各数字芯片工作状态进行自检。加电后CPU和各数字
2. Movement servo system control CPU on the movement servo system control content: laser focus coil and tracking coil in the current size and direction of feed motor and spindle motor rotation speed and direction and the movement of a variety of sequence effects Action (music selection, fast forward, rewind, disc browsing) and so on. Among them, the main control CPU (8032) has a mask in the logic program, which can self-check the working state of each digital chip on the bus according to the specified logic program after powering on. After power on the CPU and the figures