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Appendix
Problem Possible Cause Action
Intercom doesn’t function Input not connected Check connections
No voice activation, or must
talk too loud
Check System page, Com Op-
tions, Intercom level
Can’t change active frequency Com Radio not communicat-
ing
Contact dealer
OBS readout displays “---” Resolver failure Contact dealer
Calibration error Recalibrate resolver
Display shows
“Incorrect Calibration Check-
sum” at start-up
Corrupted system calibration
parameters
Contact factory