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400 SERIES MAINTENANCE MANUAL Page ix
P/N 190-00140-05 Rev. C
APPENDIX A
GNC 420A AND GNS 430A
A.1 DESCRIPTION ....................................................................................................A-1
A.2 ‘A’ VERSION PART NUMBERS ..........................................................................A-1
A.3 TROUBLESHOOTING.........................................................................................A-1
A.4 DISASSEMBLY AND ASSEMBLY.......................................................................A-2
A.5 ALIGNMENT, CALIBRATION, AND TESTING....................................................A-2
A.6 REPLACEABLE PARTS AND ASSEMBLIES......................................................A-2
A.7 ASSEMBLY DRAWING.......................................................................................A-2
APPENDIX B
CONNECTOR I/O DESCRIPTIONS
B.1 I/O DESCRIPTION...............................................................................................B-1
B.2 INTERNAL AND EXTERNAL CONNECTORS....................................................B-1
B.3 MAIN BOARD CONNECTORS............................................................................B-2
B.4 COM BOARD CONNECTORS ..........................................................................B-11
B.5 NAV BOARD CONNECTORS ...........................................................................B-12
B.6 GLIDESLOPE BOARD CONNECTORS............................................................B-15
B.7 KEYBOARD CONNECTORS ............................................................................B-15
B.8 INVERTER BOARD CONNECTORS ................................................................B-16
B.9 GPS MODULE CONNECTORS ........................................................................B-17
B.10 INTERFACE BOARD CONNECTORS ..............................................................B-17
B.11 DISPLAY MODULE CONNECTORS.................................................................B-18
B.12 DATA BASE CARD CONNECTORS.................................................................B-18
B.13 MAP BOARD CONNECTORS...........................................................................B-18