| 摘要 |
PURPOSE:To shorten a distance between a head amplifier circuit board and a magnetic head and to prevent the influence of extrinsic noise from being given, by screwing the head amplifier circuit board on a carriage on which the magnetic head is fixed. CONSTITUTION:A head amplifier board 5 is arranged in the neighborhood of the magnetic head 3, and is fixed on the carriage 4 via a screw 6, and the board 5 is connected to the magnetic head 3 with a shield wire 7. And a main body control circuit board 8 and the board 5 are constituted separately via a cable 9, and since the board 5 is arranged in the neighborhood of the magnetic head 3 separated far away the board 8, it is very hard to be affected by the extrinsic noise compared with a conventional device. Also, since the board 5 is screwed on the carriage 4 via the screw 6,exchanging work can be easily performed. By screwing the board 5 on the carriage 4 on which the head 3 is fixed in such a way, the distance between the board 5 and the head 3 is reduced, and the influence of the extrinsic noise can be suppressed at a low level. |
