Electronic device having detachable controller

An electronic device including a controlled part, comprising:

• a first housing that includes the controlled part and a non-volatile first storage medium, the first storage medium stores control information regarding the controlled part;
• a controller that is detachable from the first housing, reads the control information from the first storage medium when attached to the first housing and controls the controlled part based on the read control information, wherein the first housing includes a mechanical module and a drive source that provides a drive force to the mechanical module, and the controlled part is a driver circuit board of the drive source;
• a power supply device capable of supplying drive power to the drive source while changing a current value or pulse width modulation duty value of the drive power;
• and
• a detector that determines if the mechanical module is in a static condition or a dynamic condition, when the power supply device supplies the drive power to the drive source while changing the drive power,
• wherein the mechanical module includes a guide shaft, a carriage that reciprocates along the guide shaft, a recording head mounted on the carriage, and a transmission device that transmits the drive force from the drive source to the carriage.