Abstract: Signal wires (14) are attracted into and held by a suction nozzle (20), and the signal wires (14) are positioned to desired positions in this holding state then they are fixed to a circuit board. As a result, the suction nozzle (20) attracts the signal wires (14) along with the air and easily hold them even if distal ends of the signal wires (14) are spatially scattered, e. g., if the wires are somewhat away from the suction nozzle (20). Since the signal wires (14) are attracted into and held by the suction nozzle (20) in such manner, no excessive force is applied to the signal wires (14) above the suction force of the suction nozzle (20) and the signal wires (14) are not cut during transfer even when they are transferred in the holding state.

Abstract: Through-holes (2) are bored in given positions of a disk enclosure (101), and sealing members (1) having threaded holes (6) in which screw members (3) for mounting external components can be screwed are provided. The through-holes (2) are sealed by the sealing members (1), and a printed circuit board (116) and other external components are mounted on the outer surface of the disk enclosure (101) by screwing screw members (3) into the threaded holes (6). Thus, it is possible to prevent dust particles from entering the interior of the disk enclosure, and the external components can be fixed to the disk enclosure (101) easily without increasing the manufacturing cost due to the increased number of machining steps, and without unduly increasing the size of the device.