Vertex Standard VX-3200V User Manual

1
VHF FM Transceiver
VX-3200V
Service Manual
Introduction
This manual provides technical information necessary for servicing the VX-3200V Transceiver.
Servicing this equipment requires expertise in handling 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 circuit board in the transceiver. Each side of thr board is
referred to by the type of the majority of components installed on that side (“leaded” or “chip-only”). 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 technical 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.
Specifications................................................... 2
DSUB 9-pin Accessory Connector................. 3
Exploded View & Miscellaneous Parts ........ 4
Block Diagram ................................................. 5
Interconnection Diagram ............................... 7
Contents
Circuit Description ...................................... 9
Alignment ................................................... 11
Board Unit (Schematics, Layouts & Parts)
RF Unit ............................................................................. 17
Panel Unit ........................................................................31
©
2002 VERTEX STANDARD CO., LTD. (EC039N90A)
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.
International Division
8350 N.W. 52nd Terrace, Suite 201, Miami, FL 33166, U.S.A.
YAESU EUROPE B.V.
P.O. Box 75525, 1118 ZN Schiphol, The Netherlands
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 VX-3200V Specifications

General

Frequency Range	136-174 MHz
Channel Spacing	12.5/20/25 kHz
Operating Voltage	7.4 VDC
Operating Temperature	-30°C to +60°C
Channel Capacity	128 channels
Weight	350 g (without battery)
Audio Output	500mW
Modulation	FM

Summary

VX-3200V Specifications

General Specifications

Receiver Specifications

Transmitter Specifications

VX-3200V Circuit Description

Overview and Frequency Configuration

Receive Signal Path Analysis

Details the step-by-step journey of incoming RF signals through the receiver circuitry.

Transmit Signal Path Analysis

Explains the process of audio and control signals being converted to RF for transmission.

PLL Frequency Synthesizer Operation

Power Supply Circuitry

Transceiver Alignment Procedures

Alignment Test Equipment and Setup

Lists necessary test equipment and essential preparation steps for accurate calibration.

Alignment Preparation and Precautions

Provides important guidelines and precautions before performing transceiver alignment procedures.

PLL VCV and Reference Frequency Alignment

Covers the alignment steps for the PLL VCV and reference frequency for accurate tuning.

Transmitter Alignment Steps

Details the procedures for aligning TX power output and modulation deviation parameters.

Receiver Alignment Steps

Explains the alignment process for receiver squelch threshold and RX tuning for optimal performance.

RF Unit Documentation

RF Unit Circuit Diagrams

RF Unit Parts List

PANEL Unit Documentation

PANEL Unit Circuit Diagram

PANEL Unit Parts List