Image forming apparatus with separate interlocks for motors and sensors

An electronic apparatus comprising:

• a unit part that can be pulled out of a main unit;
• a cover part that is disposed in a direction in which the unit part is pulled out, with respect to the unit part, and is configured to, when closed, cover the unit part;
• a lock part that, if the cover part is opened, is movable to a first position where it is possible to pull the unit part out of the main unit and is movable to a second position where it is impossible to pull the unit part out of the main unit;
• and
• a circuit configured to perform an operation check, the circuit including,
• a detection unit configured to, when being supplied with power, detect an internal state of the unit part, and
• a first power supply unit configured to, based on a position of the lock part, shut off a first supply of power to the detection unit when the lock part is moved to the first position, and provide the first supply of power to the detection unit when the lock part is moved to the second position,
• wherein the circuit performs the operation check based on a detection result of the detection unit if the unit part is put back into the main unit and the lock part is moved to the second position, the circuit being configured to perform the operation check even during times when the cover part is opened.