Kenwood TK-7160 Service Manual

Also see for TK-7160: Instruction manual Specifications Brochure & specs Service manual Instruction manual

TK-7160/71622INTRODUCTIONSCOPE OF THIS MANUALThis manual is intended for use by experienced techni-cians familiar with similar types of commercial grade commu-nications equipment. It contains all required service informa-tion for the equipment and is current as of this publicationdate. Changes which may occur after publication are coveredby either Service Bulletins or Manual Revisions, which areissued 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. If thepart number is not known, include the chassis or kit numberof which it is a part and a sufficient description of the requiredcomponent for proper identification.PERSONAL SAFETYThe following precautions are recommended for personalsafety :• DO NOT transmit if someone is within two feet (0.6meter) 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 power-up for safe operation.• This equipment should be serviced by only qualified tech-nicians.PRE-INSTALLATION CONSIDERATIONS1. UNPACKINGUnpack the radio from its shipping container and check foraccessory 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 installation.Transmitter frequency, deviation, and power output shouldbe checked, as should receiver sensitivity, squelch operation,and audio output. Signalling equipment operation should beverified.3. PLANNING THE INSTALLATION3-1. GeneralInspect the vehicle and determine how and where the ra-dio antenna and accessories will be mounted.Plan cable runs for protection against pinching or crushingwiring, and radio installation to prevent overheating.3-2. AntennaThe favored location for an antenna is in the center of alarge, flat conductive area, usually at the roof center. Thetrunk lid is preferred, bond the trunk lid and vehicle chassisusing ground straps to ensure the lid is at chassis ground.3-3. RadioThe universal mount bracket allows the radio to bemounted in a variety of ways. Be sure the mounting surfaceis adequate to support the radio’s weight. Allow sufficientspace around the radio for air cooling. Position the radio closeenough to the vehicle operator to permit easy access to thecontrols when driving.3-4. DC Power and wiring1. This radio may be installed in negative ground electricalsystems only. Reverse polarity will cause the cable fuse toblow. Check the vehicle ground polarity before installationto prevent wasted time and effort.2. Connect the positive power lead directly to the vehiclebattery positive terminal. Connecting the Positive lead toany other positive voltage source in the vehicle is not rec-ommended.3. Connect the ground lead directly to the battery negativeterminal.4. The cable provided with the radio is sufficient to handlethe maximum radio current demand. If the cable must beextended, be sure the additional wire is sufficient for thecurrent to be carried and length of the added lead.4. INSTALLATION PLANNING – CONTROL STATIONS4-1. Antenna systemControl station. The antenna system selection depends onmany factors and is beyond the scope of this manual. YourKENWOOD dealer can help you select an antenna systemthat will best serve your particular needs.4-2. Radio locationSelect a convenient location for your control station radiowhich is as close as practical to the antenna cable entry point.Secondly, use your system’s power supply (which suppliesthe voltage and current required for your system). Make suresufficient air can flow around the radio and power supply toallow adequate cooling.GENERAL