FT-450D_维修维护电器原理图手册

YAESUVERTEX STANDARD CO.,LTD.4-8-8 Nakameguro,Meguro-Ku,Tokyo 153-8644,JapanVERTEX STANDARDHF/50MHZ TRANSCEIVERUS Headquarters10900 Walker Street,Cypress.CA 90630.U.S.A.YAESU UK LTD.FT-450/DUnit 12.Sun Valley Business Park,Winnall CloseWinchester,Hampshire,SO230LB,U.K.VERTEX STANDARD HK LTD.Technical SupplementUnit 5,20/F.,Seaview Centre,139-141 Hoi Bun Road,Kwun Tong,Kowloon,Hong KongVERTEX STANDARD(AUSTRALIA)PTY.,LTD.Normanby Business Park,Unit 14/45 Nomanby RoadNotting Hill 3168.Victoria.Australia2011 VERTEXSTANDARD CO.,LTD.EH024H90DIntroductionThis manual provides technical information necessaryfor servicing the FT-450/D HF/50 MHz Transceiver.Servicing this equipment requires expertise in handling sur-face-mount chip components.Attempts by non-qualified per-sons to service this equipment may result in permanentdamage not covered by the warranty,and may be illegal in2l295.00F0-Asome countries.Two PCB layout diagrams are provided for each double-sided circuit board in the Transceiver.Each side of is re-ferred to by the type of the majority of components in-FT-450stalled on that side ("leaded"or "chip-only").In mostcases one side has only chip components,and the otherhas either a mixture of both chip and leaded components(trimmers,coils,electrolytic capacitors,ICs,etc.),or lead-ed components only.While we believe the technical information in this manu-al to be correct,VERTEX STANDARD assumes no liabili-ty for damage that may occur as a result of typographi-21295.00F8-Acal or other errors that may be present.Your cooperationin pointing out any inconsistencies in the technical infor-mation would be appreciated.FT-450DContentsSpecificationsExploded View Miscellaneous PartsBlock DiagramConnection DiagramAlignmentBoard Unit(Schematics,Layouts Parts)RF-IF UnitPANEL UnitCNTL UnitPA UnitTUNER Unit (FT-450 Option:ATU-450