CIRRUS A
IRPLANE
M
AINTENANCE
M
ANUAL
C
HAPTER
22-10: GFC 700 A
UTOMATED
F
LIGHT
C
ONTROL
S
YSTEM
MODELS SR22
AND
SR22T
T
ROUBLESHOOTING
7
2. Troubleshooting
• N
OTE
•
Troubleshooting procedures for the GCU 479 Flight Management System (FMS) Keyboard
are described in the Garmin Cirrus Pers Line Maintenance Manual, P/N
190-00920-0.
Trouble - GFC 700 Autopilot System
Probable Cause
Remedy
“AFCS” (white text on red
background) annunciation is
displayed on PFD.
AFCS system failure has occurred.
Ensure Pers Avionics system
is in proper working order. Check for
proper operation of GIA Integrated
Avionics Unit, GSU ADAHRS, and all
GSA servos.
Verify no red X’s are displayed on
MFD and PFD.
Verify no related alert messages are
displayed on PFD (press [ALERTS]).
Check AUX – SYSTEM STATUS page
on MFD to verify all LRUs are online
(green check).
Isolate fault to an LRU. Replace this
LRU and confirm resolution of
annunciation.
“PFT” (black text on white
background) annunciation is
displayed on PFD.
Pre-flight test is in progress.
Allow system to complete pre-flight
tests. The preflight test should finish
within 2 minutes. If it does not pass,
red ‘PFT’ annunciation is displayed
on PFD.
23 Dec 2016
