Garmin GNC 420 GPS Receiver User Manual


 
Page 5-42 400 SERIES MAINTENANCE MANUAL
Rev. C P/N 190-00140-05
5.7.6 Main Board Final Tests
GNC 420 versions 011-00506-10 or 011-00506-30, and GNS
430 versions 011-00280-10 or 011-00280-30 must be verified
operational with dual power switch in both positions (1 and 2).
The “A” versions of the GNC 420 and the GNS 430 must be
verified also. See the tables listed on page 1-2 for part numbers.
5.7.6.1 Push Button Response
Turn the unit on in normal mode and push each button to verify appropriate unit response.
_____OK
5.7.6.2 Rotary Knobs
Turn each rotary knob at least three turns in the same direction and verify appropriate unit
response.
_____OK
5.7.6.3 Map I.D. and Data Card Test
Apply power to the unit and verify the successful display of the following base map data:
Base Map data disclaimer _____OK
Base Map data profile (e.g., Americas, World) _____OK
Base Map version _____OK
Copyright information (date and company) _____OK
Data Card profile _____OK
Cycle version _____OK
Copyright information (date and company) _____OK