Kenwood TK-7108 Service Manual page 3

TK-7108
概述 ........................................................................... 2
操作特性 .................................................................... 5
模式组合 .................................................................. 11
维修时拆卸部件 ....................................................... 14
电路说明 .................................................................. 15
半导体数据 .............................................................. 24
元件说明 .................................................................. 26
零件表 ..................................................................... 29
部件分解图 ............................................................... 37
包装 .......................................................................... 38
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 in-
formation for the equipment and is current as of this publica-
tion date. Changes which may occur after publication are
covered by either Service Bulletins or Manual Revisions,
which are issued as required.
ORDERING REPLACEMENT PARTS
When ordering replacement parts or equipment informa-
tion, the full part identification number should be included.
This applies to all parts : components, kits, and chassis. If
the part number is not known, include the chassis or kit
number of which it is a part and a sufficient description of
the required component for proper identification.
PERSONNEL SAFETY
The following precautions are recommended for person-
nel safety :
• DO NOT transmit if someone is within two feet (0.6
meter) of the antenna.
• DO NOT transmit until all RF connectors are secure and
any open connectors are properly terminated.
• SHUT this equipment when near electrical blasting caps
or while in an explosive atmosphere.
• All equipment should be properly grounded before
power-up for safe operation.
• This equipment should be serviced by only qualified tech-
nicians.
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2
目录
调整 .......................................................................... 39
PC板视图
DISPLAY UNIT (X54-3340-20) ............................ 47
TX-RX UNIT (X57-6293-XX) ............................... 49
原理图 ...................................................................... 55
方块图 ...................................................................... 59
电平图 ...................................................................... 61
端子功能 ................................................................... 63
规格 ....................................................................... 背面
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。