190-01182-01 Rev. E Garmin GNC 255A/255B Pilot’s Guide i
Warnings, Cautions, and Notes
FOR SAFETY REASONS, GNC 255 OPERATIONAL PROCEDURES MUST BE LEARNED ON
THE GROUND.
THE GARMIN GNC 255 DOES NOT CONTAIN ANY USER-SERVICEABLE PARTS.
REPAIRS SHOULD ONLY BE MADE BY AN AUTHORIZED GARMIN SERVICE
CENTER. UNAUTHORIZED REPAIRS OR MODIFICATIONS COULD VOID BOTH
THE WARRANTY AND THE PILOT’S AUTHORITY TO OPERATE THIS DEVICE
UNDER FAA/FCC REGULATIONS.
THE GNC 255 USES A DISPLAY COATED WITH A SPECIAL ANTI-REFLECTIVE
COATING THAT IS VERY SENSITIVE TO SKIN OILS, WAXES, AND ABRASIVE
CLEANERS. CLEANERS CONTAINING AMMONIA WILL HARM THE
ANTI-REFLECTIVE COATING. IT IS VERY IMPORTANT TO CLEAN THE DISPLAY
USING A CLEAN, LINT-FREE CLOTH AND AN EYEGLASS LENS CLEANER THAT
IS SPECIFIED AS SAFE FOR ANTI-REFLECTIVE COATINGS.
Do not use outdated database information. Databases used in the system
must be updated regularly in order to ensure that the information remains
current. Pilots using an outdated database do so entirely at their own risk.
Garmin recommends that if flying in a region with 8.33 kHz COM channel
spacing, the radio should remain in 8.33 kHz mode. This will prevent the loss
of stored user and recent frequencies.
All visual depictions contained within this document, including screen images
of the GNC 255 bezel and displays, are subject to change and may not reflect
the most current GNC 255 software. Depictions of equipment may differ
slightly from the actual equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
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