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VHF FM Transceiver
VX-160V/-180V
Service Manual
©2005 VERTEX STANDARD CO., LTD.
This manual provides technical information necessary for servicing the VX-160V and VX-180V FM Trans-
ceiver.
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
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.
Operating Manual Reprint ............................ 2
Cloning .............................................................. 6
Specifications ................................................... 7
Exploded View & Miscellaneous Parts ...... 8
EC013N90B
VX-160V
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 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
VX-180V
Block Diagram ................................................. 9
Circuit Description ................................11
Alignment .................................................13
Board Unit (Schematics, Layouts & Parts)
MAIN Unit ................................................................ 17
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Table of Contents
Related Manuals for Verterx Standard VX-180V
Summarization of Contents
Controls & Connectors
LED Indicator
Status indicators for transmission, battery, and calls.
Display Icons & Indicators
Explains icons for VX-180 display.
Before You Begin
Battery Pack Handling
Steps for inserting/removing battery and low battery indication.
Safety Caution
Warning about handling rechargeable Ni-Cd packs.
Operating Functions
Basic Functions
Covers Monitor, Low Power, Lock, Lamp, Channel Up/Down.
Advanced Functions
Explains Scan, Follow-Me, Dual Watch, Talk Around, etc.
Accessories & Options
List of available accessories and options.
Cloning and Specifications
Cloning Procedure
Steps for transferring radio programming data.
Specifications
Technical details including general, receiver, and transmitter specs.
System Diagrams
Exploded View
Diagram showing component assembly and part numbers.
Block Diagram
High-level overview of transceiver circuitry.
Circuit Diagram
Detailed schematic of the main unit.
Parts Layout Diagrams
Visual placement of components on PCBs.
Circuit Description
Signal Paths
Detailed explanation of receive and transmit signal paths.
Power Control & PLL
Covers ATCP, Transmit Inhibit, and PLL Synthesizer.
Alignment Procedures
Preparation & Equipment
Required test equipment and setup precautions.
Tool Operation & Sequence
Using the alignment software and sequence.
Key Adjustments
Covers PLL VCV, Output Power, MIC Sensitivity, Deviation, and Frequency.
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