Disclosed herein is a disc playback apparatus with a built-in disc drive
which performs hand-close process. The control unit 60 has the A/D input
port P which is given the voltage of the terminal of the loading motor
78, after voltage reduction by the dividing resistors R1 and R2. It
acquires the voltage applied to the A/D input port P at intervals of 20
ms if the disc tray 10 is in its completely ejected state and compares
the acquired voltage with a predefined threshold value. If the acquired
voltage is lower than the predefined threshold value, it clears the
count, and if the acquired voltage is higher than the predefined value,
it increments the count. If the count over 5, the control unit 60
delivers control signals to the driver circuit 88, thereby driving the
loading motor to retract the disc tray 10.