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Board Unit (Schematics, Layouts & Parts)
©2010 VERTEX STANDARD CO., LTD.
EH028M90D
Technical Supplement
VX-3R/E
VHF/UHF
ULTRA-COMPACT DUAL-BAND TRANSCEIVER
WITH WIDE BAND COVERAGE
Introduction
This manual provides the technical information necessary for servicing the VX-3R/E
Ultra-Compact Dual-Band Transceiver.
Servicing this equipment requires expertise in handing surface-mount chip components.
Attempts by non-qualified persons to service this equipment may result in permanent
damage not covered by the warranty, and may be illegal in some countries.
Two PCB layout diagrams provided for each double-sided board in this transceiver.
Each side of the board is referred to by the type of the majority of components installed
on that side (“Side A” or “Side B”). In most cases one side has only chip components,
and the other has either a mixture of both chip and leaded components (trimmers, coils,
electrolytic capacitors, ICs, etc.), or leaded components only.
While we believe the information in this manual to be correct, VERTEX STANDARD
assumes no liability for damage that may occur as a result of typographical or other
errors that may be present. Your cooperation in pointing out any inconsistencies in the
technical information would be appreciated.
Contents
Important Note
This 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.
VERTEX STANDARD CO., LTD.
4-8-8 Nakameguro, Meguro-Ku, Tokyo 153-8644, Japan
VERTEX STANDARD
US Headquarters
10900 Walker Street, Cypress, CA 90630, U.S.A.
YAESU UK LTD.
Unit 12, Sun Valley Business Park, Winnall Close
Winchester, 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
VERTEX STANDARD
(
AUSTRALIA
)
PTY., LTD.
Normanby Business Park, Unit 14/45 Normanby Road
Notting Hill 3168, Victoria, Australia
Summary of Contents for VX-3R/E
Page 5: ...5 Block Diagram ...
Page 6: ...6 Note ...
Page 15: ...15 Circuit Diagram MAIN Unit Lot 1 3 ...
Page 16: ...16 Note MAIN Unit Lot 1 3 ...
Page 19: ...19 MAIN Unit Lot 4 7 AMP Unit Lot 5 7 Circuit Diagram ...
Page 20: ...20 MAIN Unit Lot 4 7 AMP Unit Lot 5 7 Note ...
Page 23: ...23 MAIN Unit Lot 8 12 Circuit Diagram ...
Page 24: ...24 MAIN Unit Lot 8 12 Note ...
Page 27: ...27 MAIN Unit Lot 13 Circuit Diagram ...
Page 28: ...28 MAIN Unit Lot 13 Note ...
Page 45: ...45 Filter Unit Circuit Diagram ...
Page 48: ...48 Filter Unit Note ...
Page 49: ...49 SW Unit Lot 1 3 Circuit Diagram ...
Page 51: ...51 SW Unit Lot 4 7 Circuit Diagram ...
Page 53: ...53 SW Unit Lot 8 Circuit Diagram ...
Page 57: ...57 VCO Unit Lot 1 4 Circuit Diagram ...
Page 59: ...59 VCO Unit Lot 5 Circuit Diagram ...
Page 61: ...61 VCO Unit Lot 54 Circuit Diagram ...
Page 65: ...65 ...