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Page vi
GNS 400W Series Maintenance Manual
Rev. A
190-00356-05
FIGURES
2-1 GPS
400W ................................................................................................................ 2-1
2-2 GNC
420W ............................................................................................................... 2-1
2-3 GNS
430W................................................................................................................ 2-1
3-1
GNS 400W Block Diagram ...................................................................................... 3-1
4-1
Typical Fault Messages ............................................................................................ 4-1
4-2
Main Analog Input Test Page ................................................................................. 4-11
4-3
Display Pattern Test Page ....................................................................................... 4-11
4-4
WAAS GPS Status Page......................................................................................... 4-12
4-5
Main CDI/OBS Configuration Page ....................................................................... 4-13
4-6
Main Discrete Outputs Page ................................................................................... 4-15
4-7
Main Discrete Inputs Page ...................................................................................... 4-15
4-8
Main ARINC 429 Configuration Page ................................................................... 4-16
4-9
Main RS232 Configuration Page ............................................................................ 4-17
4-10
Main CDI/OBS Configuration Page ....................................................................... 4-25
5-1
Data Card Slot Locations .......................................................................................... 5-3
5-2
Data Card Insertion/Removal Detail......................................................................... 5-3
5-3 Top
Assembly ........................................................................................................... 5-5
5-4
Main and Nav Chassis .............................................................................................. 5-7
5-5 Fan
Replacement....................................................................................................... 5-8
5-6
Main Chassis Bottom Cavity .................................................................................. 5-10
5-7
Main Chassis Top Cavity........................................................................................ 5-12
5-8
Memory Battery Location on Main Board.............................................................. 5-15
5-9
Nav Chassis Cavity ................................................................................................. 5-17
A-1
Rear Panel Connectors............................................................................................. A-1
TABLES
2-1 Unit
Configuration .................................................................................................... 2-1
2-2 General
Specifications .............................................................................................. 2-4
2-3 GPS
Specifications ................................................................................................... 2-5
2-4 Comm
Specifications ................................................................................................ 2-6
2-5 VOR
Specifications .................................................................................................. 2-7
2-6 LOC
Specifications................................................................................................... 2-8
2-7 Glideslope
Specifications.......................................................................................... 2-9
4-1
Fault Messages and Recommended Actions............................................................. 4-2
4-2
Configuration and Test Page Names......................................................................... 4-8
4-3
Unit Input Power Requirements................................................................................ 4-9
4-4
Unit Board Configurations...................................................................................... 4-13
4-5
Com Power Requirements ...................................................................................... 4-23
4-6
Testing Failures-Main Board .................................................................................. 4-56
