Kenwood NX-900 Service Manual

Also see for NEXEDGE NX-900: Function reference Instruction manual Instruction manual

NX-90033-3. 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 radioclose enough to the vehicle operator to permit easy accessto the controls when driving.3-4. DC Power and wiring1. This radio may be installed in negative ground electricalsystems only. Reverse polarity will cause the cable fuseto blow. Check the vehicle ground polarity before instal-lation to prevent wasted time and effort.2. Connect the positive power lead directly to the vehiclebattery positive terminal. Connecting the Positive leadto any other positive voltage source in the vehicle is notrecommended.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 dependson many factors and is beyond the scope of this manual.Your KENWOOD dealer can help you select an antenna sys-tem that will best serve your particular needs.4-2. Radio locationSelect a convenient location for your control station ra-dio which is as close as practical to the antenna cable entrypoint. Secondly, use your system’s power supply (whichsupplies the voltage and current required for your system).Make sure sufficient air can flow around the radio and pow-er supply to allow adequate cooling.SERVICEThis radio is designed for easy servicing. Refer to theschematic diagrams, printed circuit board views, and align-ment procedures contained in this manual.NOTE• You must use KPG-111D version 2.30 or later for thistransceiver. KPG-111D versions earlier than version 2.30will not work properly.• You must use firmware version 2.30 or later for thistransceiver. Firmware versions earlier than version 2.30will not work properly.• If you do not intend to use the speaker 3.5-mm jack andthe D-sub 25-pin connector, fit the supplied speaker-jackcap and D-sub cap to stop dust and sand from getting in.• If the transceiver is turned ON or OFF when the power-on/off status message is enabled, the transceiver sendsthe status.Speakerjack capD-subcapPower inputconnectorIgnitionsense cableAntennaconnectorGENERAL