Garmin 255A manual Speaker On/Off, Intercom On/Off function. Then, press the ENT key

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3.4.3Intercom On/Off

The Intercom On/Off function toggles intercom on and off. The intercom can also be toggled on/off with a remote switch, if installed. The Intercom On/ Off function must be set to On to make the Adjust Intercom function available.

1.Press FUNC to access the Functions. Turn the LARGE knob to select the ICS Function. Turn the SMALL knob to view the

Intercom On/Off function. Then, press the ENT key.

Turn SMALL Knob To Select On or Off

Press ENT to		Accept
			Press CLR to Return
the Selected Value			to the Default Value

Figure 3-31 Turn the Intercom On/Off

2.Turn the SMALL knob to set the Intercom On or Off. Then, press the ENT key to save the selected value.

3.4.4Speaker On/Off

The Speaker On/Off function toggles speaker output on and off.

1.Press FUNC to access the Functions. Turn the LARGE knob to select the ICS Function. Turn the SMALL knob to select the

Speaker On/Off function. Then, press ENT.

Turn SMALL Knob To Select On or Off

Press ENT to		Accept
			Press CLR to Return
the Selected Value			to the Default Value

Figure 3-32 Turn the Speaker On/Off

2.Turn the SMALL knob to set the speaker output On or Off. Then, press the ENT key to save the selected value.

190-01182-01 Rev. A

Garmin GNC 255A/255B Pilot’s Guide

3-17

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Contents GNC 255A/255B November Limited Warranty 190-01182-01 Rev. a Iii Operation US Toll Free Canada Toll Free Product Registration and SupportRecord of Revisions Contents 2.2 2.12.3 Index Index-1 This page intentionally left blank Product Description Getting StartedNav Volume/ID Knob Power/Com Volume/Squelch KnobPilot Controls OBS Key Tuning LARGE/SMALL Concentric Cursor KnobsFLIP/FLOP Key 5 C/N Com/Nav KeyFunc Function Key USB PortMON Monitor Key Com Radio Power OnSelecting a Com Frequency Saving a Com Channel Monitoring the Standby Com ChannelAfter selecting the desired characters, press ENT After making a selection, press ENT DescriptionFrequency Database Reverse Look-Up Com Database Look-UpStuck Mic Emergency ChannelRemote Frequency Selection Control Selecting a Nav Frequency Nav RadioSaving a Nav Channel 01-36 Listening to the Nav Audio Channel14 CDI Display OBS Mode15 DST Data Display Distance/Speed/Time DST DisplayThis page intentionally left blank Functions Description FunctionsRecent Com Frequencies Com FrequenciesTurn the Small knob to select an Entry Press the CLR key to delete this User frequency Com User FrequenciesFrequencies. Press ENT Editing a Com User FrequencyCom Database Frequencies Com Database FrequenciesNearest APT function. Then, press ENT Com Nearest Airports APTTurn Small Knob To Scroll Through Available Frequencies Com Nearest Area Control Center ACC Frequencies13 Com Nearest FSS Frequencies Com Nearest Flight Service Station FSS Frequencies14 Com Nearest Weather Frequencies Com Nearest Weather WX FrequenciesRecent Nav Frequencies Nav FrequenciesPress the ENT key to delete the displayed frequency Nav User FrequenciesEditing a Nav User Frequency 21 Nav Database Frequencies Nav Database Frequencies Nav Nearest VOR When duplicate identifiers are found, press ENTFunctions display ICS ConfigurationAdjust Intercom Turn the Small knob to display the available VORsTurn the Small knob to turn the Aux Audio On or Off Aux AudioSpeaker On/Off function. Then, press ENT Intercom On/OffSpeaker On/Off Intercom On/Off function. Then, press the ENT keyCom Spacing System Configuration34 Set Display Brightness Display BrightnessDatabase Version function. Then, press the ENT key Display ContrastDatabase Info Display Contrast function. Then, press the ENT keyLoad Database function. Then, press the ENT key Load DatabasePress the Func key to return to the main menu Software VersionSerial Number Software Version function. Then, press the ENT keySetting Up the Count Down Timer TimersTo select a starting timer value Pressing ENT twice will stop the displayed Timer Setting Up the Count Up TimerViewing Timers in the Com Display Pressing CLR and then ENT will reset the displayed Timer48 Count Down Timer Value Now Counting Up This page intentionally left blank Appendix TroubleshootingCalibration error Recalibrate resolver It can be enabledOr disabled via a Remote mounted If in Lock Out modeUpdating the Frequency Database Messages Property with Power has been Re-apply power to the unitSwitch has been Verify glideslope deviationBeen in pressed All installationsInstallations Remote comNot communicating Nav radio is Contact dealer for serviceProperty with System This page intentionally left blank Index Remote frequency control 2-5 Reverse look-up 2-4 Revisions