A position control device having first and second movable members. A first
detector outputs a position signal when the first movable member is
looked in a first predetermined position in a first region. A second
detector outputs a first signal when the second movable member is located
in either tbe first region or a second region where it is released, and a
second signal when the second movable member is located in a third
region. A controller determines the region in which the second movable
member is located based on the detector outputs and when the determined
region is the first region, an actuator moves the second movable member
to a second predetermined position in the first region, and when the
determined region is the second or third region, the actuator moves the
second movable member to the second predetermined position.