八重洲Yaesu_FC-50_serv维修手册含电器原理图

YAESUThe radioTechnical SupplementAutomatic Antenna TunerFC-50EBA53X90A2017 YAESU MUSEN CO..LTD.IntroductionContentsThis manual provides the technical information necessary forservicing the FC-50 Automatic Antenna Tuner.SpecificationsServicing this equipment requires expertise in handing sur-Exploded View Miscellaneous Partsface-mount chip components.Attempts by non-qualifiedBlock Diagrampersons to service this equipment may result in permanentConnection Diagramdamage not covered by the warranty,and may be illegal inBoard Unit(Schematics,Layouts Parts)some countries.CNTL UnitTwo PCB layout diagrams provided for each double-sidedboard in this transceiver.Each side of the board is referredCAPACITOR Unitto by the type of the majority of components installed onCOIL Unitthat side ("Side A"or "Side B").In most cases one sidehas only chip components,and the other has either a mix-ture of both chip and leaded components(trimmers,coils,electrolytic capacitors,ICs,etc.),or leaded componentsonly.While we believe the information in this manual to be cor-rect,YAESU assumes no liability for damage that may oc-cur as a result of typographical or other errors that may bepresent.Your cooperation in pointing out any inconsisten-cies in the technical information would be appreciated.Important NoteThis antenna tuner was assembled using Pb(lead)free solder,based on the RoHS specification.Only lead-free solder (Alloy Composition:Sn-3.0Ag-0.5Cu)should be used for repairs performed on this apparatus.The solder statedabove utilizes the alloy composition required for compliance with the lead-free specification,and any solder with the above alloy compo-sition may be used.