____________________________________________________________________
Cirrus Perspective™ Line Maintenance Manual
Page 5-103
190-00920-00
Rev.
E
5.17.3
Troubleshooting
Interface
Problems
Use
the
following
screenshots
to
help
verify
proper
configuration
and
signal
integrity.
In
some
cases,
monitoring
signals
is
not
possible
via
configuration
pages
on
the
Perspective
system.
Symptom
Check
or
Perform
No
modes
annunciated
on
PFD
•
Clock,
sync
and
data
lines
between
GIA2
and
55x
computer.*
•
Autopilot
won’t
capture
selected
altitude
•
RS
485
connection
between
GIA2
and
55x
computer.
*
•
Autopilot
won’t
follow
CDI
or
VDI
deflections
•
Check
analog
deviation
and
flag
outputs
between
GIA2
and
55x
computer*
•
Autopilot
won’t
follow
GPS
track
in
GPSS
mode
•
Check
ARINC
429
GPS
steering
input
to
55x
from
GIA2
computer*
•
No
FD
bars
shown
on
PFD
•
Check
FD
logic
output
from
55x
computer
to
GIA2*
•
No
FD
bar
movement
•
Check
pitch
and/or
roll
analog
steering
outputs
from
55x
computer
to
GIA2*
•
Autopilot
won’t
track
HDG
bug
in
HDG
mode
•
Check
heading
datum
output
from
GIA2
to
55x
computer*
•
Autopilot
won’t
track
CRS
input
•
Check
course
datum
output
from
GIA2
to
55x
computer*
•
Autopilot
performance
issues
•
Refer
to
S
‐
TEC
troubleshooting
material
•
If
problem
is
suspected
to
be
caused
by
a
GIA
output,
swap
GIA1
and
2
and
perform
a
SET/ACTV
for
both.
If
problem
is
resolved,
replaced
defective
GIA
•
Swap
GIAs
and
perform
a
SET/ACTV
to
confirm
any
suspected
GIA
fault
•
**
Correct
configuration
errors
by
obtaining
the
correct
loader
card
for
the
installation
and
reloading
the
S
‐
TEC
55x
configuration
Summary of Contents for Cirrus Perspective SR20
Page 2: ......
