现在,硬盘的容量越来越大,给我们的工作带来了极大的方便.但是,硬盘的脆弱使得他一旦出现问题.我们又没有及时备份,后果将是带来无法估量的损失.幸好,目前在国内出现的一个新兴行业"
",使得我们遇到数据丢失,病毒破坏,误删除,误ghost,硬件故障...等不幸后可以极大地挽救重要数据,从而减少损失.
今天介绍的是大家最为关心,最为好奇,也很少见到的硬盘开盘更换磁头处理.首先我们要了解一下磁头与盘片的关系,大家都知道,数据是以磁记录方式存储在盘片上的,读取和写入都靠磁头来完成.然而,磁头并不是贴在盘片上读取的,由于磁盘的高速旋转,使得磁头利用“温彻斯特/Winchester”
技术悬浮在盘片上.这使得硬盘磁头在使用中几乎是不磨损的,这使得数据存储非常稳定,硬盘寿命也大大增长.但磁头也是非常脆弱的,在硬盘工作状态下,即使是再小的振动,都有可能使磁头受到严重损坏.由于盘片是工作在无尘环境下,所以,我们在处理磁头故障,也就是更换磁头时,都必须在无尘室内完成,而且还要有扎实的基本功,熟练的技巧,才能使成功率大大提高
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现在我们就来边看图片.边了解更换磁头的具体过程
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首先,开盘需要特定的条件和工具,无尘环境是必不可少的,其次我们可以从图中看到还需要医用手套,美工刀,尖嘴钳,直头和弯头镊子,螺丝刀(一字和t8)
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这次我们要更换磁头的硬盘是某客户的一个迈拓120g硬盘,故障情况是工作后不认盘,电机转,有敲头声.首先,我们用美工刀小心地揭开硬盘上的保修标签.
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接下来当然是拆除top上的所有螺丝,为了工作效率,外面不是要求很高的螺丝,我们可以用电动起子去卸.
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我们小心的将螺丝放在培养皿里,打开top,我们就可以一览无遗地看到硬盘的内部结构了,我们可以清楚地看到组成硬盘的各个组件,包括底座base,马达moter,磁盘disc,磁头eblk,和已经打开的顶盖top......
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打开盘腔以后,我们首先要拆除磁头eblk与主板pcba的连接线.这里,我们就不选用电动起子了,改用手工拆除,这样可以大大地降低失误而造成的严重后果,盘片是需要特别保护的,不允许有任何物体掉落在上面.
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接下来我们来拆vcm组件中的钕磁铁,钕磁铁的吸力是非常大的,我们要非常当心,左手用力按住盘腔,右手紧握尖嘴钳,将钕磁铁取下.
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然后我们需要把磁头从盘片上停靠区移出来,移出盘片,这样才可以将磁头拆下.
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我们用一字螺丝刀小心地拆下磁头,用左手按住磁头,避免磁头碰到任何东西.
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小心翼翼地手拿vcm,把坏磁头取下.
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这张图上我们可以清楚的看到,这个120g的迈拓盘有3个磁头,上面两个(并着),下面一个独立的.盘片数目是2片.
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取下磁头以后,我们找出和坏磁头同一型号的磁头去更换,我们找来事先准备好,存放在培养皿里的备用磁头.
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小心地将其装在盘腔上,尤其是磁头不能碰到任何东西,因为磁头是非常脆弱的,上面的簧片稍微受到力就会变形,一旦磁头变形,即宣告这个磁头的报废.
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接下来这个步骤是关键中的关键了,工程师的基本功和经验都体现在这里了,这里失误,将严重损坏新换上的磁头,这个步骤就是磁头上盘片,工程师用镊子将磁头挑开,直至3个磁头全部放到盘片上,当然,磁头数目越多也就意味着难度越大.
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把磁头移到盘片上的磁头停靠区
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把磁头与pcba的连接线固定好
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安装vcm组件......
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ok,我们已经安装好盘腔里面的所有东西了.仔细检查一下就可以关上top了
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最后一步.安装top,上螺丝当然要注意顺序,不要一次上紧,先对角上齐螺丝,然后在对角依次拧紧每个螺丝......
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呵呵,一切的努力终于换来了成果,接上pc检测一下,顺便用耳朵听一下,硬盘已经可以正常认盘了,盘片没有问题的话可以直接挂负盘直接复制数据,如果盘片有问题,我们就需要用软件来跳过坏道恢复数据.......
本文,图片由上海中新数据恢复及
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