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GNS 400W Series Maintenance Manual
Page 4-13
190-00356-05
Rev. A
4.4.3 Unit and Board Level Tests
Table 4-1 identifies board configurations for each unit.
Table 4-4. Unit Board Configurations
Unit Configurations
Board
Assemblies
Unit P/N
Main Board
Inverter board
Interface board
WAAS GPS
Comm board
Nav board
GS board
GPS
400W
011-01057-XX
x x x x
GNC
420W
011-01058-XX
x x x x 10w
GNC
420AW
011-01059-XX
x x x x 16w
GNS
430W
011-01060-XX
x x x x 10w
x x
GNS
430AW
011-01061-XX
x x x x 16w
x x
Main Lateral Left+, Right+ Outputs
Command the test via the main CDI/OBS configuration page (Figure 4-5). The test load is 333
ohms (three 1000 ohm loads) placed across J1-21 and J1-22.
Figure 4-5. Main CDI/OBS Configuration Page (Test Mode)
Measure J1-21 (output) relative to J1-22 (output). Full left/right (± 150 mV) selections are also
available but are not tested.
MAX LEFT
CENTER
MAX RIGHT
+300 ± 15
mV
0 ± 4.5 mV
-300 ± 15 mV
Main Vertical Up+, Down+ Outputs
Load: 333 ohms (three 1000 ohm loads) across J1-27 and J1-28. Command the test via the main
CDI/OBS configuration page (Figure 4-5).