Kenwood NX-800 Service Manual

Also see for NEXEDGE NX-800 series: Brochure Function reference Instruction manual Instruction manual Specifications

NX-8003GENERAL / 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。安装前条件1. 开箱从运输包装中取出本无线电设备并检查附件。如果有任何组件遗失，请立即与 KENWOOD 联系。2. 安装前检查2-1. 说明在运输之前每一台无线电设备均已调整和测试过。但是，在安装之前最好检查接收和发射以便操作正确。2-2. 测试无线电设备应该按照电缆和附件最终安装时的连接进行完整的测试。应该检查发射频率，频偏和输出功率，同样应该检查接收灵敏度，静噪和音频输出。应该检验信令操作。INTRODUCTIONSCOPE OF THIS MANUALThis manual is intended for use by experienced techni-cians familiar with similar types of commercial grade com-munications equipment. It contains all required serviceinformation for the equipment and is current as of this pub-lication date. Changes which may occur after publicationare covered by either Service Bulletins or Manual Revisions,which are issued as required.ORDERING REPLACEMENT PARTSWhen ordering replacement parts or equipment informa-tion, the full part identification number should be included.This applies to all parts: components, kits, and chassis. Ifthe part number is not known, include the chassis or kitnumber of which it is a part and a suffi cient description ofthe required component for proper identifi cation.PERSONAL SAFETYThe following precautions are recommended for personalsafety :• 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 andany open connectors are properly terminated.• SHUT OFF this equipment when near electrical blastingcaps or while in an explosive atmosphere.• All equipment should be properly grounded before pow-er-up for safe operation.• This equipment should be serviced by only qualifiedtechnicians.PRE-INSTALLATION CONSIDERATIONS1. UNPACKINGUnpack the radio from its shipping container and checkfor accessory items. If any item is missing, please contactKENWOOD immediately.2. PRE-INSTALLATION CHECKOUT2-1. IntroductionEach radio is adjusted and tested before shipment. How-ever, it is recommended that receiver and transmitter opera-tion be checked for proper operation before installation.2-2. TestingThe radio should be tested complete with all cabling andaccessories as they will be connected in the final installa-tion. Transmitter frequency, deviation, and power outputshould be checked, as should receiver sensitivity, squelchoperation, and audio output. Signaling equipment operationshould be verifi ed.