GTR 255/255A/255B Pilot’s Guide
Page 40
...'t function Can't change active frequency Display shows "Com Radio Needs Service" at start-up Possible Cause No power to the GTR 225 Faulty electrical wiring or connection No power to normal operation or cycle the avionics power. Corrupted system calibration parameters Action Check power connections, breakers,...key input connection Check connections Check ICS page, Intercom On/Off, Adjust Intercom If in lockout mode. Contact factory Table 4-1 Troubleshooting 4-2 Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. In this case the radio would be tuned to 121.50 and the active freq...
...'t function Can't change active frequency Display shows "Com Radio Needs Service" at start-up Possible Cause No power to the GTR 225 Faulty electrical wiring or connection No power to normal operation or cycle the avionics power. Corrupted system calibration parameters Action Check power connections, breakers,...key input connection Check connections Check ICS page, Intercom On/Off, Adjust Intercom If in lockout mode. Contact factory Table 4-1 Troubleshooting 4-2 Garmin GTR 225/225A/225B Pilot's Guide 190-01182-00 Rev. In this case the radio would be tuned to 121.50 and the active freq...