NXR-810
3
GENERAL /
概述
引言
本手册的范围
本手册是提供给熟悉通信专业并且具有维修经验的技术人
员使用的。它包括了维修该设备所需要的全部资料和现行出
版日期。在出版后可能发生变动，如果需要，可以参照《维
修通报》或《手册修订本》进行补充。
替换零件的订购
当订购替换零件或设备资料时，应注意完整的零件识别号
码。所有的零件均有识别号码∶元件，组件或机壳。如果不
知道零件的号码，为了正确地识别，必须注明此元件所属的
机壳或组件的号码，并对元件进行充分的说明。
个人安全
为了个人的安全，请注意下列事项∶
• 如果有人在天线两英尺 (0.6 米 ) 范围之内时，不要进行发
射。
• 在没有认真核实所有射频插头之前或有任何一个脱开的插
头没有连接到相应端口上的情况下均不要发射。
• 在电爆管附近或在易燃性气体环境中，必须关闭电源，不
要操作本设备。
• 为了操作的安全，在接通电源之前所有设备应该连接地线。
• 本设备只应该由有资格的技术人员进行维修。
维修服务
为了便于维修本设备，建立了完整的维修服务体系，提供
了包括原理图，印刷电路板图和调整步骤在内的资料供参考。
INTRODUCTION
SCOPE OF THIS MANUAL
This manual is intended for use by experienced techni-
cians familiar with similar types of commercial grade com-
munications equipment. It contains all required service
information 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 issued as required.
ORDERING REPLACEMENT PARTS
When ordering replacement parts or equipment informa-
tion, the full part identifi cation number should be included.
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:
• DO NOT transmit if someone is within two feet (0.6 me-
ter) of the antenna.
• DO NOT 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 schematic diagrams, printed circuit board views, and
alignment procedures contained within.
