| 摘要 |
PURPOSE:To improve signal transmission between circuit boards, by executing the transmission of a signal between plural circuit boards, by using a contact pin which has a spring in a cylindrical body and deviated in the direction in which a needle tip is projecting. CONSTITUTION:A recording signal from the outside is supplied to a stator side coil 11a of a rotary transformer 11 and transmitted to a coil 11b of a flange side, and a signal from this coil 11b is supplied to a contact 51 on a substrate 5. A contact pin 91 which has been provided on a substrate 9 is made to contact this contact 51, and a signal which has been obtained in this pin 91 is supplied to a contact pin 93 through a pattern 92 on the substrate 9. This pin 93 is made to contact a contact 71 on a substrate 7, and a signal which has been obtained in this contact 71 is supplied to a recording amplifier 73 through a pattern 72 on the substrate 7, and supplied to a recording head 12 through a power transistor 74 of its output stage.
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