Vertex Standard VX-4600 Series User Manual

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

Vertex Standard VX-4600 Series Specifications

General

Modulation	16K0F3E, 11K0F3E
Voltage	7.4 V DC
Operating Temperature	-30°C to +60°C
Channel Spacing	12.5 / 25 kHz
Operating Voltage	7.4V DC

Summary

Introduction to VX-4500/-4600 Series Service Manual

Service Manual Overview

Provides the manual's purpose and scope for servicing the transceiver, including technical information.

Servicing Precautions and Warnings

Warns against unqualified personnel and potential damage or legal issues from improper servicing.

Lead-Free Solder Requirements for Repairs

Specifies the use of lead-free solder for repairs according to RoHS standards for this apparatus.

Specifications for VX-4500/-4600 Series

General Operating Specifications

Details frequency ranges, channel count, power supply, dimensions, and weight of the transceiver.

Receiver and Transmitter Metrics (TIA/EIA-603)

Lists receiver sensitivity, selectivity, and transmitter performance by TIA/EIA standards.

Receiver and Transmitter Metrics (EN 300 086)

Lists receiver sensitivity, selectivity, and transmitter performance by EN 300 086 standards.

DSUB 15-pin Accessory Connector Details

Accessory Connector Pin Functions

Details the purpose and function of each pin on the 15-pin DSUB accessory connector.

DC Output and PTT Control Pins

Describes pins for 13.6V DC output, external PTT, and TRX switching control.

Accessory and Ignition Sense Pins

Explains pins for programmable accessory ports and the ignition sense feature.

Exploded Views and Miscellaneous Parts

VX-4500 Front Panel Components

Illustrated breakdown of parts for the VX-4500 front panel assembly.

VX-4600 Front Panel Components

Illustrated breakdown of parts for the VX-4600 front panel assembly.

Supplied Accessory Parts List

Lists accessories included with the transceiver, with part numbers and quantities.

Block Diagram of Transceiver System

Main Unit System Block Diagram

Illustrates the overall functional architecture of the main transceiver unit.

Front Panel and Unit Block Diagrams

Shows the interface and block diagrams for front panel and separate units.

Circuit Description of Transceiver

Receiver Circuitry Overview

Explains the RF signal path from antenna input through the receiver stages.

Squelch and Noise Detection Circuits

Details the operation of squelch circuit and noise detection logic.

Transmitter Circuitry and PLL Synthesis

Covers the transmitter path, power amplification, and PLL synthesizer operation.

Alignment Procedures and Guidelines

Required Test Equipment and Setup

Lists necessary tools for calibration and provides diagrams for test equipment setup.

Alignment Mode Operation and Software

Explains how to use the CE115 software and enter the alignment mode.

Core Alignment Parameters

Guides on adjusting VCO, PLL Frequency, RX Sensitivity, and Squelch.

Transmission Parameter Alignment

Covers setting TX Power, Maximum Deviation, and Modulation Balance.

Advanced Function Alignment

Details alignment for CTCSS, DCS, DTMF, VOX, TX MSK, and AF Output levels.

Installation of Optional Units

Optional Unit Descriptions and Functions

Overviews of FVP-35, DVS-8, and VT-60F/FS modules and their capabilities.

Step-by-Step Installation Guide

Instructions for physically installing optional units into the transceiver.

Parts Lists for Main and Front Units

Main Unit Component List

Detailed list of parts and components for the MAIN Unit PCB.

Front-A Unit Component List

Detailed list of parts and components for the FRONT-A Unit PCB.

Front-B Unit Component List

Detailed list of parts and components for the FRONT-B Unit PCB.

DVS-8 Voice Storage Unit Circuit Diagram

DVS-8 Circuit Schematic

Detailed schematic diagram illustrating the DVS-8 optional voice storage unit.

DVS-8 Board Component Layouts

Illustrates the placement of components on both sides of the DVS-8 circuit board.