| 摘要 |
PURPOSE:To fix a wind quantity at the time of a low temperature and to improve the quality of a system by rotating a fan for cooling at a high speed at the time of turning on the power source, and obtaining and controlling the number of rotations at the time of the low temperature based on the number of the rotations at the time of the high speed. CONSTITUTION:When power source 400 is turned on, a microprocessor 210 rotates a fan 100 for cooling at a high speed, reads the number of the rotations and judges the type of the fan. Thereafter, when a temperature instructing signal from a temperature sensor 300 shows the low temperature, the number of the rotations of the fan 100 is controlled so that the wind flow in the device can be fixed based on the type of the fan. Thus, even when the cooling fan used is different, the system down, etc., due to heating are prevented and the quality of a system is improved. |
