Vertex Standard VX-4200 service manual VHF FM Transceiver, Contents

ENGESBRA Distribuidor Autorizado Vertex Standard www.radio-vertex.com.br Tel.(11) 2983-1335

VHF FM Transceiver

VX-4200 Series VX-4100 Series

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.

Service Manual	VERTEX STANDARD HK LTD.
	Unit 5, 20/F., Seaview Centre, 139-141 Hoi Bun Road,
©	Kwun Tong, Kowloon, Hong Kong
2003 VERTEX STANDARD CO., LTD.	EH035N90A

P1 P2

TX/BUSY 1 2 3 4

A

P1 P2 A P3 P4

VX-4100 Series VX-4200 Series

Introduction

This manual provides the technical information necessary for servicing the VX-4200/-4100Series 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-4200/-4100allows 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 VPL-1 Programming Cable and CE59 Software.

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.

Contents

Specifications	A-1	Board Units (Schematics, Layouts & Parts)
DSUB 15-pin Accessory Connector	B-1	RF Unit	H-1
Exploded View & Miscellaneous Parts	C-1	FRONT-C Unit (VX-4100)	I-1
Block Diagram	D-1	FRONT-D Unit (VX-4200)	J-1
Circuit Description	E-1	Optional Units (Schematics, Layouts & Parts)
Alignment	F-1	FVP-25 Encryption/DTMF Pager Unit	K-1
Installation of Option	G-1	DVS-5 Voice Storage Unit	L-1
		VTP-50VX-Trunk Unit	M-1

ENGESBRA Distribuidor Autorizado Vertex Standard www.engesbra.com.br/vertex Tel.(11) 2983-1335