| 摘要 |
a pickup(13) fitted rotatably to a shaft rod(10) fixed at a substrate horizontally, and having a protrusion(12) at one side; a tray having a gear unit(8) inside a flange(7) and having multiple compact discs on the upper side; a middle gear rotated by the motor(16) placed on the substrate; a pickup driving gear(25) having a cam hole in the outside and guided by the protrusion so as to be selectively rotated by the middle gear; a tray driving gear(23) rotated selectively by the pickup driving gear; and an idler gear(21) connecting the pickup driving gear with the tray driving gear.
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