| 摘要 |
The play improves productivity by simplifying the assembly process and smoothly controls the position of disk. The play comprises a main base(1) which has a 1st reflection plate(11), a 2nd reflection plate(12), a 3rd reflection plate(13) and a photo sensor(14) for controlling the position of a pick-up module(7) by installing contact plates(24,25,26) on the bottom of the module(7). The printed circuit board(22) has a contact pattern(22a) in the turning point of U-type rack(4). The pick-up module(7) is positioned to the turning point of U-type racks(3,4).
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