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1、手机维修技术知识资料汇总（Mobilephonemaintenancetechnicalknowledgesummary）MobilephonemaintenancetechnicalknowledgesummaryGSMmobilephoneisahigh-tech,preciseelectronicandcommunicationhomeappliance.Itsworkingprinciple,manufacturingprocess,softwareandhardware,testingandtechnicalstandardsarethe
2、mostcomplexamongallhouseholdappliances.Aqualifiedmaintenancepersonnelmustnotonlyhaveacertaintheoreticalbasis,butalsomusthaveacertainmaintenanceskills,methodsandexperience,andinaccordancewithcertainmaintenanceprocedures.Thecontentdescribedinthischapterisalsoabasicskillformobile
3、phonemaintenancepersonnel.Section1causesthemobilephonetomalfunctionGSMmobilephoneisnotlikeotherhouseholdappliancesarehighvoltageandlargecurrent,undernormalcircumstancesisnoteasytobedamaged,butfoundinmaintenance,repairofthemobilephoneisnotintheminority,so,whatisthecauseofthedam
4、ageofthemobilephone?Ingeneral,mainlyfromthefollowingaspects.First,themobilephonesurfaceweldingtechnologyparticularityBecauseallthecomponentsofthemobilephoneinstallationformusingsurfacemounttechnology,mobilephonecircuitboardwithhighdensitysyntheticplate,bothsideshavecomponents,
5、componentsaremountedonbothsurfacesofthecircuitplate,circuitboardandcomponentproducedbysoldertensionandfixed,andmountcomponentsintegratedchippinnumber,verydense,andsolderverylittle,soifyouaccidentallycrashormobilephonecomponentsareeasytodampfailurecausedbyweldorcomponentsandcir
6、cuitboardsduetopoorcontactallkindsofmobilephone.Two,machinemobilityMobilephonebelongstotheconsumer,itshouldbewiththepositionoftheuserandthemobiletransformationrequiresthatthemobilephone,toadapttodifferentenvironments,althoughthedesignerforthemobilephoneadaptationmadeaspecialde
7、sign,butstillcannotavoidtheuseoftoomuchtimeorduetoenvironmentaltemperaturecausedbyvariousfaultsofmobilephone.Themainperformance,oneiswaterwet,thecomponentsfromcorrosion,insulationdecreased,controlcircuitisoutofcontrolduetodisturbanceoflogicsystem,thesoftwareprogramisnotworking
8、properly,resultinginseriousdirectmobilephonedoesnotboot.Thetw
