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Kenwood NXR-800 User Manual

Kenwood NXR-800
199 pages
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SERVICE MANUAL
This product complies with the
RoHS
directive for the European market.
This product uses Lead Free solder.
© 2014-4 PRINTED IN JAPAN
RQ022
(K)
B5B-7118-00
UHF DIGITAL BASE-REPEATER
NXR-800
Badge
(B43-1188-04)
Main panel
(A62-1142-02)
Knob (VOL)
(K29-4539-04)
Lead wire with
connector (DSUB-9P)
(E37-1311-05)
Lead wire with
connector (DSUB-25P)
(E37-1310-05)
Lead wire with
connector (BNC-RX)
(E37-1303-05)
Lead wire with
connector (ACC15)
(E37-1313-05)
Lead wire with
connector (BNC-REF.)
(E37-1304-05)x2
Modular jack
(E58-0526-05)
RF coaxial
receptacle (BNC)
(E04-0463-05)
Fanmotor
(F09-0488-15)
DC cord
(E30-7581-05)
Blade fuse
(F05-7521-05)
Cover (Fan)
(F07-1930-05)
Modular jack
(E58-0516-05)
Modular jack
(E58-0533-05)x2
DC 13.8V
75
CONTENTS
GENERAL .......................................................... 2
SYSTEM SET-UP ............................................... 3
REALIGNMENT ................................................. 3
OPERATING FEATURES .................................. 5
INSTALLATION .................................................. 6
CIRCUIT DESCRIPTION ................................... 8
COMPONENTS DESCRIPTION ...................... 24
TERMINAL FUNCTION ................................... 28
PARTS LIST ..................................................... 42
EXPLODED VIEW ............................................ 76
PACKING ......................................................... 78
TROUBLE SHOOTING .................................... 79
ADJUSTMENT ................................................. 87
PC BOARD..................................................... 100
SCHEMATIC DIAGRAM ................................ 124
OPTIONAL ACCESSORIES .......................... 140
SPECIFICATIONS .......................................... 143
APPENDIX 1 (BLOCK DIAGRAM)
APPENDIX 2 (INTERCONNECTION DIAGRAM)
APPENDIX 3 (SCHEMATIC DIAGRAM X53-413)
APPENDIX 4 (SCHEMATIC DIAGRAM X53-414)
K5 version

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Questions and Answers:

Kenwood NXR-800 Specifications

General IconGeneral
BrandKenwood
ModelNXR-800
CategoryRepeater
LanguageEnglish

Summary

General Information

Personal Safety Precautions

Lists essential safety guidelines for operating the equipment, including antenna proximity and grounding.

Service Information

Provides general information on servicing the transceiver and refers to relevant sections for detailed procedures.

System Set-Up

PC Mode

Covers the preface and connection procedure for programming the NXR-800 via PC.

Realignment

PC Programming and Firmware Update

Details PC connection, firmware programming steps, and cable specifications for the NXR-800.

Operating Features

Installation

OCXO (KXK-3) Installation

Details the mounting and connection of the KXK-3 OCXO unit.

External Speaker (KES-5) Connection

Provides step-by-step instructions for connecting the KES-5 external speaker, including terminal manipulation.

Circuit Description

Transmitter Unit Circuits

Details the internal/external reference, 19.2MHz PLL reference, modulation PLL, DDS, and main PLL circuits of the transmitter unit.

Terminal Function

Trouble Shooting

Adjustment

Alignment Procedures

Details the step-by-step alignment procedures for various NXR-800 parameters, including VCO lock voltage and deviation.

Specifications

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