Vertex_VX-2000V_维修维护电器原理图手册_2003

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Vertex_VX-2000V_维修维护电器原理图手册_2003
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S Vertex StandardVERTEX STANDARD CO..LTD.4-8-8 Nakameguo,Meguro-Ku,Tokyo 153-8644,JapanVERTEX STANDARDVHF Land Mobile TransceiverUS Headquarters10900 Waiker Street,Cypress,CA 90630,U.SA.VX-2000V8350 N.W.52nd Terrace,Suile 201,Miami,FL33166.U.S.AYAESU EUROPE B.V.P.O.Box 75525,1118 ZN Schiphol,The NetherandsService ManualYAESU UK LTD.Unit 12,Sun Valley Business Park,Winnal CloseWinchester,Hampshire,SO23 OLB,U.K.VERTEX STANDARD HK LTD.@2003 VERTEX STANDARD CO.,LTD.E095390AUnit 5,20V/F.,Seaview Centre,139-141 Hoi Bun Road.Kwun Tong.Kowloon,Hong Kong40 channel version4 channel versionIntroductionThis manual provides technical information necessary for servicing the VX-2000V VHF Land Mobile transceiver.The VX-2000V is carefully designed to allow the knowledgeable operator to make nearly all adjustments required forvarious station conditions,modes and operator preferences simply from the controls on the panels,without opening thecase of the transceiver.The VX-2000V Operating Manual describes these adjustments,plus certain internal settings.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 warranty.For the major circuit boards,each side of the board is identified by the type of the majority ofcomponents installed onthat side.In most cases one side has only chip components,and the other has either a mixture of both chip and lead components(trimmers,coils,electrolytic capacitors,packaged ICs,etc.),or lead components only.While we believe the technical information in this manual is correct,Vertex Standard assumes no liability for damagethat may occur as a result of typographical or other errors that may be present.Your cooperation in pointing out anyinconsistencies in the technical information would be appreciated.Vertex Standard reserves the right to make changes inthis transceiver and the alignment procedures,in the interest of technological improvement,without notification of theowners.ContentsOperating Manual Reprint.....Board Unit(Schematics,Layouts Parts)Specifications……7MAN Unit...23DISPLAY-1Unit…49Exploded View Miscellaneous Parts.......8DISPLAY-2Unit.....53Block Diagram…9Interconnection Diagram.13MIC Unit.58Circuit Description..15Alignment.….19
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