Abstract: A hinge assembly for a media player having a main body and a cover body, includes a first hinge subassembly. The first hinge subassembly includes a first base plate adapted to be secured to the main body of the media player, a first joint axle secured to the first base plate, a first hinge arm adapted to be secured to the cover of the media player, several resilient bushings surrounding the first joint axle and arranged adjacent the first end of the first hinge arm, and an adjustable fastener coupled to the first joint axle for exerting an adjustable force applied to the first end of the first hinge arm. The first hinge arm has a first end pivotally coupled to the first joint axle. The adjustable fastener is positioned to generate a friction force between the first end of the first hinge arm and the at least one resilient bushing, and the friction force is sufficient to overcome gravitational force acting on the cover of the media player.

Abstract: An optical reproducing/recording apparatus (1) includes a chassis (11) with a first seat (17) and three second seats (16), a turntable (12), an optical pickup head (13) and a guide device (15). The turntable is located on the chassis for rotating an optical disk positioned thereon. The guide device has a first and second beams (151, 152). An end of the first beam is fixed on the first seat, the other end of the first beam and two ends of the second beam are respectively fixed on the second seats by an adjustable device (18). Each second seat has a groove for accommodating the beam and each adjustable device comprises an elastic element (182) and an adjustable element (181). The elastic element is positioned between the beam and a bottom of the groove and the adjustable element fixes the beam in the groove against a side of said groove.