我们在检修一台美国进口帅功能叽开f几发现其自检显示硬盘故障，系统无法e动。用软盘启动后，机器不认硬盘，系统软件无法读出，该机依然不能正常工作c故障分析与检查：开机观察发现，＊54（）硬盘达到额定转速后，磁头驱动电机只在原地小范围内来口转动，几分钟后，电机停止不 We have overhauled a U.S. import handsome feature and found that its self-test shows that the hard disk is malfunctioning and the system cannot move. After booting with a floppy disk, the machine does not recognize the hard disk, the system software cannot read it, and the machine still cannot work properly. c Failure analysis and inspection: After starting the observation, *54() after the hard disk reaches the rated rotation speed, the head drive motor is only in the small area at the original location. Inside the mouth rotation, after a few minutes, the motor does not stop