General - Kenwood NXR-800 Service Manual

NXR-800
Document Copyrights
Copyright 2007 by Kenwood Corporation. All rights re-
served.
No part of this manual may be reproduced, translated,
distributed, or transmitted in any form or by any means,
electronic, mechanical, photocopying, recording, or other-
wise, for any purpose without the prior written permission
of Kenwood.
Disclaimer
While every precaution has been taken in the preparation
of this manual, Kenwood assumes no responsibility for er-
rors or omissions. Neither is any liability assumed for dam-
ages resulting from the use of the information contained
herein. Kenwood reserves the right to make changes to any
products herein at any time for improvement purposes.
Firmware Copyrights
The title to and ownership of copyrights for firmware
embedded in Kenwood product memories are reserved for
Kenwood Corporation. Any modifying, reverse engineer-
ing, copy, reproducing or disclosing on an Internet website
of the firmware is strictly prohibited without prior written
consent of Kenwood Corporation. Furthermore, any resell-
ing, assigning or transferring of the fi rmware is also strictly
prohibited without embedding the firmware in Kenwood
product memories.
NXDN Transceivers:
The AMBE+2(TM) voice coding technology is embedded
in the fi rmware under the license of Digital Voice Systems,
Inc.
2

GENERAL

INTRODUCTION
SCOPE OF THIS MANUAL
This manual is intended for use by experienced tech ni -
cians familiar with similar types of commercial grade com -
mu ni ca tions equipment. It contains all required service
in for ma tion for the equipment and is current as of the pub-
lication date. Changes which may occur after publication
are covered by either Service Bulletins or Manual Revisions.
These are is sued as required.
ORDERING REPLACEMENT PARTS
When ordering replacement parts or equipment in for ma-
tion, the full part identifi cation number should be in clud ed.
This applies to all parts : components, kits, or chassis. If the
part number is not known, include the chassis or kit number
of which it is a part, and a suffi cient description of the re -
quired component for proper identifi cation.
PERSONAL SAFETY
The following precautions are recommended for personal
safety :
• DONOT transmit if someone is within two feet (0.6 me-
ter) of the antenna.
• DONOT transmit until all RF connectors are secure and
any open connectors are properly terminated.
• SHUT OFF this equipment when near electrical blasting
caps or while in an explosive atmosphere.
• All equipment should be properly grounded before pow-
erup for safe operation.
• This equipment should be serviced by only qualifi ed tech-
nicians.
SERVICE
This transceiver is designed for easy servicing. Refer to
the sche mat ic diagrams, printed circuit board views, and
align ment procedures contained within.