Patent ID: 7934539

Claim:
An electronic apparatus comprising: a thermal conductive member mounted on a heat generating object mounted on a substrate, the thermal conductive member having heat conductivity; radiation fins attached to the thermal conductive member for radiating heat into air; a liquid cooling member removably attached to the thermal conductive member for absorbing heat from the thermal conductive member, the liquid cooling member defining a flow passage; a circulation pump coupled to the liquid cooling member so as to enable circulation of a coolant through the flow passage; a heat exchanger defining a flow passage coupled to the flow passage of the liquid cooling member; a first ventilator generating airflow toward the heat exchanger, the airflow having a first flow rate; a second ventilator generating airflow toward the radiation fins, the airflow having a second flow rate larger than the first flow rate; and a controlling circuit connected to the circulation pump and the first and second ventilators, the controlling circuit suspending the first ventilator and activating the second ventilator in response to a reception of a signal specifying a failure of the circulation pump, wherein the flow passage is not defined in the thermal conductive member.