| 摘要 |
PURPOSE:To store the accurate data by cutting off a power supply after saving the data on a memory circuit to a magnetic disk device under the control of a memory control circuit and a magnetic disk control circuit if the abnormal rotation of a cooling fan is detected. CONSTITUTION:When a cooling fan rotation abnormality detecting circuit 3 detects the abnormal rotation of a cooling fan 2, this abnormality is reported to a memory control circuit 6. Then the data on a memory circuit 5 are saved into the circuit 6 and a magnetic disk device 4. Then a report is sent to a power control circuit 8 from the circuit 6. Thus a power supply 9 is cut off under the control of the circuit 8. As a result, the accurate data can be stored despite occurrence of the abnormal rotation of the fan 2 by saving the data to the device 4. |
