Garmin GTN 750 Pilot's Guide - Page 370
Com Radio, Configuration, Module
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Foreword Getting Started Audio & Xpdr Ctrl Com/Nav FPL Direct-To Proc Charts Wpt Info Map Traffic Terrain Weather Nearest Music Utilities System Messages Message Description Action COM RADIO Com radio may be inoperative. The com radio is not Press and hold the volume knob or communicating properly the external com remote transfer with the system. (COM RMT XFR) switch, if installed - this will force the com radio to 121.5 MHz. Contact dealer for service. COM RADIO Com overtemp or undervoltage. Reducing transmitter power. Com radio is in overtemp or undervoltage mode and transmitting power has been reduced to prevent damage to the com radio. Radio range will be reduced. Decrease length of com transmissions, decrease cabin temperature and increase cabin airflow (especially near the GTN). Check aircraft voltage and reduce electrical load as necessary. Contact dealer for service if this message persists. COM RADIO - Com radio is locked to Com locked to 121.5 MHz. 121.5 MHz. Hold remote com transfer key to exit. The external com remote transfer (COM RMT XFR) switch has been held and the com radio is tuned to 121.5. To exit this mode, hold the com remote transfer (COM RMT XFR) switch for two seconds. CONFIGURATION TAWS is inoperative - Terrain/TAWS due to a configuration configuration is problem with the GTN. invalid. GTN needs This message will be service. accompanied by a TER FAIL annunciation. Contact dealer for service. CONFIGURATION The GTN cannot MODULE - communicate with its GTN configuration configuration module. module needs The GTN may still have service. a valid configuration. Contact dealer for service. Symbols Appendix Index 17-4 Garmin GTN 725/750 Pilot's Guide 190-01007-03 Rev. B