Vertex_VX-6000L_维修维护电器原理图手册

Vertex StandardVERTEX STANDARD CO.,LTD.4-8-8 Nakameguro,Meguro-Ku,Tokyo 153-8644,JapanVERTEX STANDARDUS HeadquartersVHF Low-Band FM Transceiver10900 Walker Street,Cypress,CA90630,U.S.AYAESU UK LTD.VX-6000LUnit 12,Sun Valley Business Park,Winnall CloseWinchester,Hampshire,SO23 OLB,U.K.VERTEX STANDARD HK LTD.Service ManualUnit 5,20/F.,Seaview Centre,139-141 Hoi Bun Road,Kwun Tong.Kowloon,Hong KongVERTEX STANDARD(AUSTRALIA)PTY.,LTD.@2009 VERTEX STANDARD CO.,LTD.EC024L90BNormanby Business Park,Unit 14/45 Normanby RoadNotting Hill 3168,Victoria,AustraliaIntroductionThis manual provides technical information necessary for servicing the VX-6000L 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 of is 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.Important NoteAfter Lot.13 of this transceiver 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 perfommed on this apparatus.Thesolder stated above utilizes the alloy composition required for compliance with the lead-free specification,and any solder withthe above alloy composition may be used.ContentsOperating Manual Reprint.........1-1Board Unit(Schematics,Layouts Parts)Coning2-1MAIN Unit..6A-1DISPLAY Unit .........6B-1Specifications2-2KEY Unit......6C-1Exploded View Miscellaneous Parts ...3-1VR Unit.6D-1Block Diagram3-2MIC CONN Unit.6D-2MICCONN Unit.6D-3Interconnection Diagram.3-4PA Unit..6E-1Circuit Description ........….4-1NB Unit.....6F-1Alignment...5-1Optional Board Unit(Schematics,Layouts Parts)F2D-82-Tone Decode Unit..........................A-1VTP-50 VX-Trunk Unit ...........7B-1FVP-25 Encryption /DTMF Pager Unit..........C-1E5D-145-Tone UnitD-1FIF-7 Connection Unit...........7E-1