Yaesu FT-817 Technical Supplement

Also see for FT-817 -: Brochure & specs Operating manual Operating manual Manual Modification Instructions

Contents

Yaesu FT-817 Technical Supplement Manual pdf 1 page image

©2005 VERTEX STANDARD CO., LTD. (E137790B)Technical SupplementFT-817/FT-817 NDHF / VHF / UHFAll Mode TransceiverIntroductionThis manual provides technical information necessary forservicing the Yaesu FT-817/FT-817ND HF & V/UHF-BandsTransceiver. It does not include information on installa-tion and operation, which are described in the FT-817/FT-817ND Operating Manual provided with the transceiv-er, or on accessories which are described in their manuals.The FT-817/FT-817 ND is carefully designed to allow theknowledgeable operator to make nearly all adjustmentsrequired for various station conditions, modes and oper-ator preferences simply from the controls on the panels,without opening the case of the transceiver. The FT-817/FT-817ND Operating Manual describes these adjustments,plus certain internal settings.Servicing this equipment requires expertise in handlingsurface mount chip components. Attempts by unquali-fied persons to service this equipment may result in per-manent damage not covered by warranty. For the majorcircuit boards, each side of the board is identified by thetype of the majority of components installed on that side.In most cases one side has only chip components, and theother has either a mixture of both chip and lead compo-ContentsSpecification .................................................... 2Exploded View & Miscellaneous Parts ..... 3Block Diagram ................................................ 5Interconnection Diagram .............................. 7Circuit Description......................................... 9Alignment ......................................................15nents (trimmers, coils, electrolytic capacitors, packagedICs, etc.), or lead components only.While we believe the technical information in this manu-al is correct, VERTEX STANDARD assumes no liabilityfor damage that may occur as a result of typographical orother errors that may be present. Your cooperation inpointing out any inconsistencies in the technical informa-tion would be appreciated. VERTEX STANDARD reservesthe right to make changes in this transceiver and the align-ment procedures, in the interest of technological improve-ment, without notification of owners.Board Unit (Schematics, Layouts & Parts)MAIN Unit ............................................................... 25PLL Unit ................................................................... 63REF Unit ................................................................... 75PA / FINAL Unit ..................................................... 81PANEL Unit ............................................................. 99VR Unit ................................................................... 109TCXO-9 Unit (Option) .......................................... 110VERTEX STANDARD CO., LTD.4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, JapanVERTEX STANDARDUS Headquarters10900 Walker Street, Cypress, CA 90630, U.S.A.YAESU EUROPE B.V.P.O. Box 75525, 1118 ZN Schiphol, The NetherlandsYAESU UK LTD.Unit 12, Sun Valley Business Park, Winnall CloseWinchester, Hampshire, SO23 0LB, U.K.VERTEX STANDARD HK LTD.Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,Kwun Tong, Kowloon, Hong Kong