PRIMUS
r
1000 Integrated Avionics System
A28--1146--112--00
9-9
Troubleshooting
COMBINED VERTICAL AND LATERAL MODE PROBLEMS
Refer to table 9--4 for combined vertical and lateral mode problems.
Mode
Problems
Mode Logic Problems
-- Modes do not engage
-- Modes do not clear
Autopilot Problems
-- Autopilot does not engage
-- Autopilot does not follow commands
-- Stick bump
-- Stick buzz
Problems Common to Both Vertical and Lateral Modes
Table 9--4
GROUND MAINTENANCE TEST
On the ground, the crew can use the PRIMUS
R
1000 Integrated
Avionics System to access to the status of several key internal
functions in the IC--600 Integrated Avionics Computer (IAC). The
ground maintenance test procedure is described in table 9--5, and the
ground maintenance display is shown in figure 9--3.
Step
Procedure
1
I
nitiate system test by powering up the aircraft on the ground.
Steps 2--5 are all done on the display controller (DC).
2
Push and hold the TEST button. For the first 5 to 6
seconds, the EFIS displays the standard preflight test.
3
Continue to hold the TEST button. The PFD displays a listing
of key IAC internal functions.
Ground Maintenance Test Procedure
Table 9--5 (cont)
