Electronic apparatus and method for managing power supply

An electronic apparatus, comprising:

• a cover to open or close;
• a convertor configured to control supply of power to a load according to one of a state of a switch and an operational mode of the electronic apparatus, the state of the switch being switched according to opening or closing of the cover,
• the convertor supplying the power when the switch is in a closed state or when the operational mode is an operating mode causing a load output, and stopping supplying the power when the switch is in an open state or the operational mode is in a sleep mode causing the load output to stop;
• a discharge circuit configured to discharge a capacitor of a power supply when the convertor stops operating;
• a discharge completion detector configured to detect completion of discharge performed with the discharge circuit according to a voltage in the discharge circuit;
• and
• a power supply restoration device configured to restore operation of the convertor in response to a detection of the discharge completion detector indicating the completion of the discharge of the capacitor, when the switch is in the closed state or when the operational mode is switched from the sleep mode to the operating mode.

A method of controlling power supply to an electronic apparatus, comprising:

• with a converter, controlling power supply to a load according to one of a state of a switch and an operational mode, the state of the switch being switched according to opening or closing of a cover of the electronic apparatus,
• the controlling step including:
• supplying the power when the switch is in a closed state or when the operational mode is in an operating mode causing a load output;
• and
• stopping supplying the power when the switch is in an open state or when the operational mode is in a sleep mode causing the load output to stop;
• with a discharge circuit, discharging a capacitor located on a power supply side when the convertor stops operating;
• detecting completion of discharge performed with the discharge circuit according to a voltage in the discharge circuit;
• and
• restoring operation of the convertor in response to the detecting the completion of the discharge of the capacitor, when the switch is in the closed state or when the operational mode is switched from the sleep mode to the operating mode.