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故障现象:打开显示器有消磁声,开主机后不自检,无访盘动作,显示器无任何字符显示,主机面板上“AUTO”指示灯不亮,但“DISK”或“HDD”指示灯始终亮,键盘完全失灵.检查分析:开机后显示器有消磁声,并开大亮度可见光栅,基本上可以说明显示器无故障,从主机指示灯上观察,硬盘指示灯“DISK”常亮,似乎机器在访硬盘,不能转去访A和B盘,好象硬盘现在未准备好或出现了故障.检查机内所有插件无接触不良现象.对该机进行冷启动,故障如故.但用该机面板上的复位键(RESET)启动时,前几次无反应,连续按几次后突然机器正常启动了,再反复按“RESET”键试之,有时可以启动,有时则不能启动.看来故障出现在“RESET”键上.
Symptom: Open the display degaussing sound, open the host does not self-test, no disk, the display without any character display, the host panel “AUTO” light does not shine, but “DISK” or “HDD” light is always on , The keyboard is completely malfunctioning. Inspecting and analyzing: The display has degaussing sound after power on, and open the large brightness visible grating, which can basically indicate that the monitor is faultless. From the indicator of the host computer, the DISK indicator of the hard disk is always on, Hard disk, you can not turn to visit the A and B disk, as if the hard disk is not ready or there is a fault. Check all the plug-in non-contact machine bad phenomenon. Cold start the machine, failure as before. Reset button (RESET) start, the previous few no response, continuous press several times after the sudden normal machine started, and then repeatedly press the “RESET” button to try, and sometimes can be started, sometimes can not start. It appears that the fault appears in the “ RESET ”key.