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1、VERTEXSTANDARDCO.,LTD.4-8-8Nakameguro,Meguro-Ku,Tokyo153-8644,JapanVERTEXSTANDARDFMTRANSCEIVERUSHeadquarters10900WalkerStreet,Cypress,CA90630,U.S.A.YAESUEUROPEB.V.P.O.Box75525,1118ZNSchiphol,TheNetherlandsFT-1807MYAESUUKLTD.Unit12,SunValleyBusinessPark
2、,WinnallCloseWinchester,Hampshire,SO230LB,U.K.TechnicalSupplementVERTEXSTANDARDHKLTD.Unit5,20/F.,SeaviewCentre,139-141HoiBunRoad,KwunTong,Kowloon,HongKong©2006VERTEXSTANDARDCO.,LTD.EH023U90AIntroductionThismanualprovidestechnicalinformationnecessaryfor
3、servicingtheFT-1807MFMTransceiver.Servicingthisequipmentrequiresexpertiseinhandlingsurface-mountchipcomponents.Attemptsbynon-qualifiedpersonstoservicethisequipmentmayresultinpermanentdamagenotcoveredbythewarranty,andmaybeillegalinsomecountries.TwoPCBla
4、youtdiagramsareprovidedforeachdouble-sidedcircuitboardintheTransceiver.Eachsideofisreferredtobythetypeofthemajorityofcomponentsinstalledonthatside(“leaded”or“chip-only”).Inmostcasesonesidehasonlychipcomponents,andtheotherhaseitheramixtureofbothchipandl
5、eadedcompo-nents(trimmers,coils,electrolyticcapacitors,ICs,etc.),orleadedcomponentsonly.Whilewebelievethetechnicalinformationinthismanualtobecorrect,VERTEXSTANDARDassumesnoliabilityfordamagethatmayoccurasaresultoftypographicalorothererrorsthatmaybepres
6、ent.Yourcooperationinpointingoutanyinconsistenciesinthetechnicalinformationwouldbeappreciated.ImportantNoteThistransceiverwasassembledusingPb(lead)freesolder,basedontheRoHSspecification.Onlylead-freesolder(AlloyComposition:Sn-3.0Ag-0.5Cu)shouldbeusedfo
7、rrepairsperformedonthisapparatus.Thesolderstatedaboveutilizesthealloycompositionrequiredforcompliancewiththelead-freespecification,andanysolderwiththeabovealloycompositionmaybeused.ContentsSpecifications.................................................
8、.....2BoardUnit(Schematics,Layouts&Parts)ExplodedView&MiscellaneousParts............3MAINUnitCircuitDiagram.................................13MAINUnitPartsLayout.......................................15BlockDiagram......................
