Messages | Garmin 255A instruction

4.3Messages

When a Message has been issued by the unit, the Message will be shown on the display. After viewing the messages, touch the ENT key to acknowledge the message and return to the previously viewed page. An acknowledged message will not be redisplayed even if the condition persists. Messages provide an aid to troubleshooting system operation.

Message

Press ENT To

Acknowledge

Figure 4-1 Message - Com PTT Key Stuck

Message

Description

Action

COM RADIO -	The com radio is	Cycle the power to the COM radio.
Com radio needs	reporting that it needs	Contact dealer for service.
service.	service. The com radio
	may continue to
	function.
COM RADIO -	The com radio is not	Press and hold the volume knob or
Com radio may be	communicating properly	the external com remote transfer
inoperative.	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 radio is	Decrease length of com
Com overtemp	in overtemp or	transmissions, decrease cabin
or undervoltage.	undervoltage mode	temperature and increase cabin
Reducing	and transmitting power	airflow (especially near the GTN).
transmitter power.	has been reduced to	Check aircraft voltage and reduce
	prevent damage to the	electrical load as necessary.
	com radio. Radio range	Contact dealer for service if this
	will be reduced.	message persists.
COM RADIO -	Com radio is locked to	The external com remote transfer
Com locked to	121.5 MHz.	(COM RMT XFR) switch has been
121.5 MHz. Hold		held and the com radio is tuned to
remote com		121.5. To exit this mode, hold the
transfer key to exit.		com remote transfer (COM RMT
		XFR) switch for two seconds.

4-4

Garmin GNC 255A/255B Pilot’s Guide

190-01182-01 Rev. A

Image 56

Garmin 255A manual Messages

Contents

GNC 255A/255B November Limited Warranty 190-01182-01 Rev. a Iii Operation Product Registration and Support US Toll Free Canada Toll Free Record of Revisions Contents 2.3 2.12.2 Index Index-1 This page intentionally left blank Getting Started Product Description Pilot Controls Power/Com Volume/Squelch KnobNav Volume/ID Knob Tuning LARGE/SMALL Concentric Cursor Knobs FLIP/FLOP Key5 C/N Com/Nav Key OBS Key MON Monitor Key USB PortFunc Function Key Selecting a Com Frequency Power OnCom Radio After selecting the desired characters, press ENT Monitoring the Standby Com ChannelSaving a Com Channel Description After making a selection, press ENT Com Database Look-Up Frequency Database Reverse Look-Up Remote Frequency Selection Control Emergency ChannelStuck Mic Saving a Nav Channel Nav RadioSelecting a Nav Frequency Listening to the Nav Audio Channel 01-36 OBS Mode 14 CDI Display Distance/Speed/Time DST Display 15 DST Data Display This page intentionally left blank Functions Functions Description Turn the Small knob to select an Entry Com FrequenciesRecent Com Frequencies Com User Frequencies Press the CLR key to delete this User frequency Editing a Com User Frequency Frequencies. Press ENT Com Database Frequencies Com Database Frequencies Com Nearest Airports APT Nearest APT function. Then, press ENT Com Nearest Area Control Center ACC Frequencies Turn Small Knob To Scroll Through Available Frequencies Com Nearest Flight Service Station FSS Frequencies 13 Com Nearest FSS Frequencies Com Nearest Weather WX Frequencies 14 Com Nearest Weather Frequencies Nav Frequencies Recent Nav Frequencies Nav User Frequencies Press the ENT key to delete the displayed frequency Editing a Nav User Frequency Nav Database Frequencies 21 Nav Database Frequencies When duplicate identifiers are found, press ENT Nav Nearest VOR ICS Configuration Adjust IntercomTurn the Small knob to display the available VORs Functions display Aux Audio Turn the Small knob to turn the Aux Audio On or Off Intercom On/Off Speaker On/OffIntercom On/Off function. Then, press the ENT key Speaker On/Off function. Then, press ENT System Configuration Com Spacing Display Brightness 34 Set Display Brightness Display Contrast Database InfoDisplay Contrast function. Then, press the ENT key Database Version function. Then, press the ENT key Load Database Load Database function. Then, press the ENT key Software Version Serial NumberSoftware Version function. Then, press the ENT key Press the Func key to return to the main menu To select a starting timer value TimersSetting Up the Count Down Timer Setting Up the Count Up Timer Viewing Timers in the Com DisplayPressing CLR and then ENT will reset the displayed Timer Pressing ENT twice will stop the displayed Timer 48 Count Down Timer Value Now Counting Up This page intentionally left blank Troubleshooting Appendix It can be enabled Or disabled via a Remote mountedIf in Lock Out mode Calibration error Recalibrate resolver Updating the Frequency Database Messages Power has been Re-apply power to the unit Switch has beenVerify glideslope deviation Property with All installations InstallationsRemote com Been in pressed Property with System Nav radio is Contact dealer for serviceNot communicating This page intentionally left blank Index Remote frequency control 2-5 Reverse look-up 2-4 Revisions