Abstract: A recording and replaying device is provided in which a user can easily diagnose failure when a built-in storage device of the device fails. In a normal operation state, a microcomputer controls a signal path switching mechanism to connect a signal processing device and a hard disk drive (HDD). In an abnormal operation state, the microcomputer sets a USB interface device to effective state, and controls the signal path switching mechanism to connect the USB interface device and the hard disk drive (HDD), so that the hard disk drive is recognized by an external personal computer as a USB mass storage.

Abstract: A rotary to linear converter is disclosed in a flexible magnetic disk drive environment for translating the bidirectional, incremental rotation of a stepping motor into the linear stepwise displacement of a head carriage. A flexible, nonstretchable band is looped about a pulley nonrotatably mounted on the motor output shaft and is affixed thereto. Extending generally in opposite directions away from the pulley, the opposite ends of the band are apertured or otherwise adapted for engagement with respective hooks on the head carriage. Each hook has a substantially arcuate contact surface for direct engagement with the correspondingly shaped edge of the band defining the associated aperture, so that each end portion of the band is angularly displaceable in its own plate about the associated hook on the head carriage. Spring tensioned in its longitudinal, the band automatically aligns itself by simple engagement of the carriage hooks with its opposite ends.