Introduction
This manual provides the technical information necessary for servicing the
VX-4500/-4600
Series Mobile 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 are 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 (surface-mount devices), and the other has either a mixture of both chip and leaded
components (trimmers, coils, electrolytic capacitors, ICs, etc.), or leaded components only.
As described in the pages to follow, the advanced microprocessor design of the
VX-4500/-4600
allows a complete
alignment of this transceiver to be performed without opening the case of the radio; all adjustments can be performed
from the personal computer, using with the Vertex Standard FIF-10A USB Programming Interface and CE115 Soft-
ware.
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.
©
2011VERTEX STANDARD CO., LTD. EC093N90B
VHF FM Transceiver
VX-4500
Series
VX-4600
Series
Service Manual
VX-4600
Series
VX-4500
Series
Specifications ............................................................... 2
DSUB 15-pin Accessory Connector .......................... 3
Exploded View & Miscellaneous Parts ................... 4
Block Diagram .............................................................. 5
Circuit Description ...................................................... 6
Alignment ..................................................................... 8
Installation of Option ............................................... 22
Contents
Board Units (Schematics, Layouts & Parts)
MAIN Unit ............................................................. 23
FRONT-A Unit (VX-4500) .................................... 30
FRONT-B Unit (VX-4600) .................................... 37
Optional Units (Schematics, Layouts & Parts)
DVS-8 Voice Storage Unit .................................... 44
Important Note
The VX-4500/-4600 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 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.
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 1306-1308, 13F., Millennium City 2, 378 Kwun Tong Road,
Kwun Tong, Kowloon, Hong Kong
VERTEX STANDARD
(
AUSTRALIA
)
PTY., LTD.
Tally Ho Business Park, 10 Wesley Court, East Burwood, VIC, 3151
