FT-450_serv维修手册含电器原理图

YAESUVERTEX STANDARD CO.,LTD.4-8-8 Nakameguro,Meguro-Ku,Tokyo 153-8644,JapanVERTEX STANDARDUS HeadquartersHF/50 MHz TRANSCEIVER10900 Walker Street,Cypress,CA 90630,U.S.A.YAESU EUROPE B.V.P.O.Box 75525,1118 ZN Schiphol,The NetherlandsFT-450YAESU UK LTDhe格Hamr88 al CloseTechnical SupplementVERTEX STANDARD HK LTD.Unit 5,20/F.,Seaview Centre,139-141 Hoi Bun RoadKwun 'Tong,Kowloon,Hong KongVERTEX STANDARD(AUSTRALIA)PTY.,LTD.Normanby Business Park,Unit 14/45 Normanby RoadNotting Hill 3168,Victoria,Australia@2007 VERTEX STANDARD CO.,LTD.H024H90AIntroductionThis manual provides technical information necessaryfor servicing the FT-450 HF/50 MHz Transceiver.Servicing this equipment requires expertise in handlingsurface-mount chip components.Attempts by non-qual-2l295.00ified persons to service this equipment may result in per-manent damage not covered by the warranty,and maybe illegal in some countries.Two PCB layout diagrams are provided for each double-sided circuit board in the Transceiver.Each side of is re-Contentsferred to by the type of the majority of components in-Specificationsstalled on that side ("leaded"or "chip-only").In mostExploded View Miscellaneous Partscases one side has only chip components,and the otherBlock Diagramhas either a mixture of both chip and leaded componentsConnection Diagram(trimmers,coils,electrolytic capacitors,ICs,etc.),or lead-Alignmented components only.Board Unit(Schematics,Layouts Parts)While we believe the technical information in this manu-RF-IF Unital to be correct,VERTEXSTANDARD assumes no liabili-PANEL Unitty for damage that may occur as a result of typographi-CNTL Unitcal or other errors that may be present.Your cooperationPA Unitin pointing out any inconsistencies in the technical infor-mation would be appreciated.TUNER Unit ATU-450 (Option)Downloaded byRadioAmateur.EU