yaesu-ft-2dr-de-维修手册电器原理图

YAESUTECHNICAL SUPPLEMENTThe radio144/430 MHz Dual-Band Digital TransceiverFT2DR/DEEHO60M90C2016 YAESU MUSEN CO.,LTD.IntroductionContentsThis manual provides the technical information necessary for ser-vicing the FT2DR/DE 144/430 MHz Dual Band Digital Trans-Specificationsceiver.Exploded View Miscellaneous PartsServicing this equipment requires expertise in handing surface-Block Diagrammount chip components.Attempts by non-qualified personsAlignmentto service this equipment may result in permanent damage notcovered by the warranty,and may be illegal in some countries.Board Unit(Schematics,Layouts Parts)Two PCB layout diagrams provided for each double-sidedRF Unitboard in this transceiver.Each side of the board is referred toCNTL Unitby the type of the majority of components installed on that sideSUB Unit("Side A"or "Side B").In most cases one side has only chipUSB Unitcomponents,and the other has either a mixture of both chip andENC Unitleaded components (trimmers,coils,electrolytic capacitors,ICs,etc.),or leaded components only.MIC UnitWhile we believe the information in this manual to be correct,YAESU assumes no liability for damage that may occur as aresult of typographical or other errors that may be present.Yourcooperation in pointing out any inconsistencies in the technicalinformation would be appreciated.CautionRisk of explosion if battery is replaced by an incorrecttype.Dispose of used batteries according to the instruc-tions.Important NoteThis transceiver was assembled using Pb(lead)freesolder,based on the RoHS specification.Only lead-free solder (Alloy Composition:Sn-3.0Ag-0.5Cu)should be used for repairs performed on thisapparatus.The solder stated above utilizes the alloycomposition required for compliance with the lead-freespecification,and any solder with the above alloy com-position may be used.