Vertex VR-160 Technical Supplement

COMMUNICATIONS
RECEIVER
VR-160
Technical Supplement
©2010 VERTEX STANDARD CO., LTD.
Introduction ..........................................................................................................................................................1
Specifications .......................................................................................................................................................2
Exploded View & Miscellaneous Parts ............................................................................................................4
Block Diagram ......................................................................................................................................................5
Circuit Description ..............................................................................................................................................7
Alignment .............................................................................................................................................................9
Board Unit (Schematics, Layouts & Parts)
MAIN Unit ...........................................................................................................................................................13
SW Unit ................................................................................................................................................................29
VCO Unit .............................................................................................................................................................33
EH037M91A
This manual provides the technical information necessary for servicing the VR-160
Communications Receiver.
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.
This receiver was assembled using Pb (lead) free solder, based on the RoHS spec-
ification.
Only lead-free solder (Alloy Composition: Sn-3.0Ag-0.5Cu) should be used for
repairs performed on this apparatus. 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.
Contents
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
Important Note
1