METHOD OF TESTING AN OPTICAL INFORMATION MEDIUM AND OPTICAL INFORMATION MEDIUM TESTING APPARATUS

摘要

A method of testing an optical information medium and an optical information medium testing apparatus compare a voltage of a tracking error signal generated based on return light from the optical information medium received by an optical pickup and a reference voltage set in advance and judge that a fault is present on the optical information medium when the voltage of the tracking error signal is equal to or greater than the reference voltage.