1©2011 VERTEX STANDARD CO., LTD. EH027M70EVHF/UFH FM TRANSCEIVERFTM-10R/ETechnical SupplementIntroductionThis manual provides technical information necessary forservicing the FTM-10R/E VHF/UHF FM Transceiver.Servicing this equipment requires expertise in handlingsurface-mount chip components. Attempts by non-qualified persons to service this equipment may resultin permanent damage not covered by the warranty, andmay be illegal in some countries.Two PCB layout diagrams are provided for each dou-ble-sided circuit board in the Transceiver. Each side ofis referred to by the type of the majority of componentsinstalled on that side (“leaded” or “chip-only”). In most cases one side has only chip components, and theother has either a mixture of both chip and leaded components (trimmers, coils, electrolytic capacitors, ICs,etc.), or leaded components only.While we believe the technical information in this manual to be correct, VERTEX STANDARD assumes noliability for damage that may occur as a result of typographical or other errors that may be present. Yourcooperation in pointing out any inconsistencies in the technical information would be appreciated.Important NoteThe 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 performed on this appara-tus. The solder stated above utilizes the alloy composition required for compliance with the lead-free specification,and any solder with the above alloy composition may be used.ContentsSpecifications ........................................................................................................................................ 2Exploded View & Miscellaneous Parts ............................................................................................ 3Block Diagram ...................................................................................................................................... 5Circuit Description .............................................................................................................................. 7Alignment .............................................................................................................................................. 9Board Unit (Schematics, Layouts & Parts)MAIN-Unit ...................................................................................................................................... 17PANEL-Unit .................................................................................................................................... 51CH-SW-Unit .................................................................................................................................... 61CONNECTOR-Unit ....................................................................................................................... 62VERTEX STANDARD CO., LTD.4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, JapanVERTEX STANDARD U.S.A. Inc.6125 Phyllis Drive, Cypress, California 90630, U.S.A.YAESU UK LTD.Unit 12, Sun Valley Business Park, Winnall CloseWinchester, Hampshire, SO23 0LB, U.K.VERTEX STANDARD HK LTD.Unit 1306-1308, 13F., Millennium City 2, 378 Kwun Tong Road,Kwun Tong, Kowloon, Hong KongVERTEX STANDARD (AUSTRALIA) PTY., LTD.Tally Ho Business Park, 10 Wesley Court, East Burwood, VIC, 3151