A disc reproducing includes, a motor for driving the disc, a turntable coupled to a motor shaft of the motor, a motor base for mounting the motor, a chassis for supporting the motor, a motor base bearing system mounted on the chassis for bearing the pendulum swing of the motor base above the chassis around a first axis along a trace of a beam spot of an optical pickup to a disc placed on the turntable and the flapping of the motor base around a second axis on the motor base for intersecting at the right angle the beam spot trade in parallel with the disc surface, a device for holding the motor base on the motor base bearing system, a first adjusting member mounted on the chassis for adjusting the pendulum swing attitude of the motor base around the first axis and a second adjusting member mounted on the chassis for adjusting the flapping attitude of the motor base around the second axis.