An apparatus for controlling drive of a plurality of actuators is provided. The
apparatus comprises a plurality of drive circuits respectively driving the actuators
and respectively mounted on a plurality of circuit boards each formed as a module
for driving each of the actuators. Each module is detachable to the apparatus.
The apparatus comprises a plurality of capacitors each mounted on each of the circuit
boards. The capacitors have capacitances different from each other. The apparatus
also comprises a charging unit charging the capacitors, a measuring unit measuring
a period of time during which a charging potential at each of the capacitors rises
up to a predetermined potential, a module type determining unit determining a type
of each of the modules in accordance with the period of time for each capacitor
measured, and a unit for taking countermeasures depending on a determined result.