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Page 3-2 400 SERIES MAINTENANCE MANUAL
Rev. C P/N 190-00140-05
3.3 TROUBLESHOOTING PROCEDURES
3.3.1 Fuses
Check for blown fuses on the Main Board, Com Board, and Nav Board as shown in Figures 3-1
through 3-4. If blown fuses are found, try to determine the cause of the fuse failure before
installing a new fuse.
F
8
5
0
5A
F853
0.75A
F851
3A
F852
2A
F854
5A
Figure 3-1. Main Board Fuse Locations