Vertex_VX-410_VX-420_维修维护电器原理图手册

S Vertex StandardVERTEX STANDARD CO.,LTD.4-8-8 Nakameguro,Meguro-Ku,Tokyo 153-8644,JapanVERTEX STANDARDVHF FM TransceiverUS Headquarters10900 Walker Street,Cypress,CA 90630,U.S.A.VX-410/-420 seriesYAESU EUROPE B.V.P.O.Box 75525,1118 ZN Schiphol,The NetherlandsYAESU UK LTD.Service ManualUnit 12,Sun Valley Business Park,Winnall CloseWinchester,Hampshire,SO23 OLB.U.K.VERTEX STANDARD HK LTD.2004 VERTEX STANDARD CO.,LTD.ECO50N90AUnit 5,20/F.,Seaview Centre,139-141 Hoi Bun Road,Kwun Tong,Kowloon,Hong Kong置1)23)A456)B789c*)0#)《DVX-410 seriesVX-420 seriesIntroductionThis manual provides technical information necessary for servicing the VX-410/-420 series FM Transceiver.Servicing this equipment requires expertise in handling surface-mount chip components.Attempts by non-qualifiedpersons to service this equipment may result in permanent damage not covered by the warranty,and may be illegal insome countries.Two PCB layout diagrams are provided for each double-sided circuit board in the transceiver.Each side ofis referredto by the type of the majority of components installed on that side ("leaded"or"chip-only").In most cases one side hasonly chip components,and the other has either a mixture of both chip and leaded components(trimmers,coils,electrolyticcapacitors,ICs,etc.),or leaded components only.While we believe the technical information in this manual to be correct,VERTEX STANDARD assumes no liabilityfor damage that may occur as a result of typographical or other errors that may be present.Your cooperation in pointingout any inconsistencies in the technical information would be appreciated.ContentsOperating Manual Reprint.......2Board Unit (Schematics,Layouts Parts)MAIN Unit…19Specifications........8DUMMY Unit..34Exploded View Miscellaneous Parts .............9Optional Units (Schematics,Layouts Parts)Block Diagram11FVP-25 Encryption/DTMF Pager Unit ....35Circuit Description3VTP-50 VX-Trunk Unit.37DVS-5 Voice Storage Unit..39Alignment….15