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故障现象IBM—PC/XT硬盘不能自举,可以由A>转入C>,但C盘只能读不能写,如A驱动器引导,自检完内存后机器“嘟……”一声长鸣,A驱动器指示灯不熄,Ctrl—Alt—Del失效。一、分析与维修根据故障现象,应从以下几部分查检:1、硬盘驱动器逻辑板的写人部分。2、软硬盘适配器及有关插槽。3、电源输出及其它。首先因硬盘不能写入,在A>下用COPY命令不断向C盘复制文件,用50MHz示波器查出驱动逻
Failure phenomenon IBM-PC / XT hard drive can not bootstrap, you can change from A> C, but only read C drive can not write, such as A drive boot, self-test memory after the machine “beep ...” A drive light is not extinguished, Ctrl-Alt-Del failure. First, the analysis and maintenance According to the symptoms, check the following sections: 1, hard drive logic board write part. 2, the hard disk adapter and the slot. 3, power output and other. First of all, due to the hard disk can not be written, under A> COPY order constantly copy files to the C drive, with a 50MHz oscilloscope to find the drive logic