Garmin GTN 6 series Maintenance Manual

Also see for GTN 725: User manual Maintenance manual Maintenance manual Activation Instructions User manual

Contents

Garmin GTN 6 series Maintenance Manual Manual pdf 39 page image

190-01007-B1 GTN 6XX/7XX Part 27 AML STC Maintenance ManualRev. 1 Page 4-74.3.1.1 COM Related AlertsTable 4-3. COM Alert Troubleshooting GuideAlert Text Possible Cause Corrective ActionCOM RADIO - COM radioneeds service.A failure has been detected inthe COM transceiver. Thetransceiver may still beusable.This message may appear after operations in configuration mode. Cycle power to the entireGTN (both GPS/NAV and COM circuit breakers) and see if the message has cleared.Contact Garmin Product Support.REMOTE KEY STUCK -COM push-to-talk key isstuck.The COM push-to-talk switchis stuck in the enabled orpressed state.Press the PTT switch to cycle its operation.If the message persists, contact Garmin Product Support.Go to the GTN DIAGNOSTICS - DISCRETE INPUTS page in configuration mode and checkthat the state of the input changes when the PTT switch is pressed and released.Verify that the PTT switch wiring is correct.REMOTE KEY STUCK -COM remote transfer key isstuck.The COM remote transfer keyis stuck in the enabled orpressed state.Go to the GTN DIAGNOSTICS - DISCRETE INPUTS page in configuration mode and checkthat the state of the input changes when the COM remote frequency increment switch ispressed and released.Verify that the COM remote frequency increment switch wiring is correct.Press the COM remote transfer switch to cycle its operation.If the problem persists, contact Garmin Product Support.REMOTE KEY STUCK -COM remote frequencyincrement key is stuck.The COM remote frequencyincrement key is stuck in theenabled or pressed state.Go to the GTN DIAGNOSTICS - DISCRETE INPUTS page in configuration mode and checkthat the state of the input changes when the COM remote frequency increment switch ispressed and released.Verify that the COM remote frequency increment switch wiring is correct.Press the COM remote frequency increment key to cycle its operation.If the problem persists, contact Garmin Product Support.REMOTE KEY STUCK -COM remote frequencydecrement key is stuck.COM remote frequencydecrement key is stuck in theenabled or pressed state.Press the COM remote frequency decrement key to cycle its operation.Go to the GTN DIAGNOSTICS - DISCRETE INPUTS page in configuration mode and checkthat the state of the input changes when the COM remote frequency decrement switch ispressed and released.Verify that the COM remote frequency decrement switch wiring is correct.If the problem persists, contact Garmin Product Support.