Patent ID: 7830642

Claim:
A disc apparatus comprising: a DC motor which rotates a disc; a controller which controls a rotation of the DC motor, and a reproduction unit which reads out data recorded in the disc and performs a reproduction processing in accordance with the data, further includes a detector which successively detects output voltages of the DC motor when the DC motor rotates the disc and a failure judgment unit which judges whether or not the DC motor is at fault in accordance with the output voltages, wherein the failure judgment unit calculates an average of the output voltages as an average voltage, counts number of occurrences of a specific state which indicates that one of the two output voltages detected successively is larger than the average voltage and other of the two output voltages is smaller than the average voltage as number of specific states, and judges whether or not the DC motor is at fault in accordance with the number of specific states, and the controller stops the DC motor in response to the judgment of the failure judgment unit that DC motor is at fault.