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1、硬盘电路板维修故障分析与处理步骤Theso-calledyi,onthewaterside.WhenIfeellikeatear,Ihatethebird.Aheartlessmanisnotarealhero.Theeyesarefulloflaughterandthesixpaladinsarecolorless.Wailthesixarmiesofthearmy,theonenuistheredface.Thisarticleiscontributedbythesunsnowball520Docdocumentsmayhaveapoorbrowsingexperienceatt
2、heWAPend.ItisrecommendedthatyouchooseTXT,ordownloadthesourcefiletothenativeview.Harddrivecircuitboardmaintenancefaultanalysisandprocessingsteps,hereonlyabriefintroductiontothephysicalfailureanalysisandgeneralprocessingsteps:shortcircuit,needtodofurthercheck.(1)thefirstcheckwhetherCMOSSETUPlostH
3、ardDiskconfigurationinformation.WhethermeasuringCOMSRAMcircuitsonthemainboardofbatteryisfaulty,orcomponents(suchasdiodes,transistors,resistors,capacitors,etc.)candamagetheHarddriveconfigurationparametersofthereasonsCMOSError.(2)throughthepower-onself-test,ifthescreendisplayanErrormessage"HardDi
4、skError,"explainstheHardDiskisreallyfault.OrHardDiskwasnotgood.(3)shutdown,bootlid,+5v,+12vpowersupplyisnormal,whetherthepowersupplyboxfanrotation.Inordertodeterminewhetherexternalpowershortage.(4)checksignalcable,pluginwhethergood,whetheragainstorpoorcontact.Trytrytoexchangesomecableplug.(5)ad
5、optsthemethodof"alternative"todeterminethefaultparts.ComparedwiththeHardDisk,findagoodHardDiskismainortheHarddriveitselfhasaproblem.Theabovesteps,theuserneedstocarefullycheck,testandanalysis,findoutthecomponentstorepairbad.Aftertheabovetreatment,aslongasit'snotHardDiskbodyitselfisdamaged,isonly
6、thepoorcontactofgenericconnectorsoropencircuitfaultismostcanquicklyruledout.TheresistancemethodmeasuringcircuitboardPCBmaintenancemeasureresistancemethodThemeasuringmethodisgenerallythemultimeterresistancemeasuringpartsorcomponentsofinternalresistance,accordingtothesizeoftheresistanceoronandoff
7、,thecauseoftheproblemanalysisinthecircuit.Generalcomponentsorpartsoftheinputpintogroundortopowerandoutputpinhasacertainresistance,usecommonmultimetermeasurement,therearemanysituationstherearesmallpumpingresistance,largereverseresi
