FT-857D_serv维修手册含电器原理图_2007

YAESUVERTEX STANDARD CO..LTD.4-8-8 Nakameguro,Meguro-Ku,Tokyo 153-8644,JapanVERTEX STANDARDUS HeadquartersHF/VHF/UHF10900 Walker Street,Cypress,CA 90630,U.S.A.YAESU EUROPE B.V.ULTRA-COMPACT TRANSCEIVERP.O.Box 75525,1118 ZN Schiphol,The NetherlandsYAESU UK LTD.FT-857/-857DVERTEX STANDARD HK LTD.Unit 5,20/F.,Seaview Centre,139-141 Hoi Bun Road.Technical SupplementKwun Tong,Kowloon,Hong KongVERTEX STANDARD(AUSTRALIA)PTY..LTD.Normanby Business Park,Unit 14/45 Normanby Road2007 VERTEX STANDARD CO.,LTD.EH007M90CNotting Hill 3168,Vicloria,Australia￥A8UIntroductionThis manual provides technical information necessary for servicing the FT-857/-857D HF/VHF/UHF Ultra-Compact Trans-ceiver.Servicing this equipment requires expertise in handling surface-mount chip components.Attempts by non-qualified per-sons to service this equipment may result in permanent damage not covered by the warranty,and may be illegal in somecountries.Two PCB layout diagrams are provided for each double-sided circuit board in the Transceiver.Each side of is referred toby the type ofthe majority of components installed on that side ("leaded"or"chip-only").In most cases one side has onlychip 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 liability fordamage that may occur as a result of typographical or other errors that may be present.Your cooperation in pointing outany inconsistencies in the technical information would be appreciated.ContentsSpecifications.Board Unit (Schematics,Layouts Parts)Exploded View Miscellaneous Parts ......5MAIN Unit....25PLL Unit.63Connection Diagram…7Bl0 ck Diagram…8PANEL Unit.93CircuitREF Unit9.9PHONE-JACK Unit..100Alignment12VR Unit.10CONNECTOR Unit..102DSP-2 Unit (FT-857Option)..103TCXO-9 Unit (Option).106