| 摘要 |
<p>PURPOSE:To obtain a tracking phase adjusting device having satisfactory operability and the minimum malfunction by automatically resetting a tracking phase to a preset position when a cassette is ejected. CONSTITUTION:Since ordinarily most of tracking phases are used at their preset positions, the tracking phase is automatically reset up to its preset position when a cassette 16 is ejected. Namely, in a system to return a tracking volume 1 to its preset position by a mechanism system, a cassette holder 1 rises from an illustrated state in the direction of an arrow A when the cassette is ejected, and after that, a dial gear 5 is returned up to its preset position by mechanism operations including the rotation of a lever 3 in the direction of an arrow B. On the other hand, in the case of an electric system, the contents of counters 29 and 30, in which the output pulses of a divider 34 are counted and stored, are reset by a cassette ejection completed pulse from a terminal 26, the output of an adder 32 is made equal to the output of a preset counter 33, and the tracking phase is set to its preset position. Thus, the device having the satisfactory operability and the minimum malfunction can be obtained.</p> |
