____________________________________________________________________
Page 5-92
Cirrus Perspective™ Line Maintenance Manual
Rev. E
190-00920-00
5.16.2
GFC
700
Pre
‐
Flight
Test
and
Troubleshooting
This
section
helps
the
technician
determine
why
the
GFC
700
Pre
‐
Flight
Test
(PFT)
indicated
by
the
red
PFT
annunciation
has
failed.
The
PFT
is
performed
by
both
GIA’s
at
system
startup,
and
needs
to
pass
on
both
GIA’s
before
the
autopilot
can
be
engaged.
The
PFT
is
only
started
if
the
AHRS
has
aligned,
the
GIA’s
and
servos
are
configured,
and
the
certification
gains
are
valid.
If
the
PFT
does
not
complete
after
one
minute
after
initialization,
it
will
fail.
After
the
system
PFT
has
passed,
it
will
be
performed
again
if
a
servo
resets,
if
the
autopilot
servo
breaker
is
reset,
or
if
the
cross
‐
side
GIA
restarts
it.
The
PFT
failure
fault
is
logged
in
the
GIA
Maintenance
Log
and
not
in
the
Servo
Maintenance
Logs
unless
the
GIA
log
fault
identifies
a
servo
problem.
NOTE
Thoroughly
understanding
the
operation
of
the
system
in
configuration
mode
before
starting
this
procedure.
The
GFC
Status
Page
may
be
used
to
check
the
status
of
the
servos
as
an
aid
in
troubleshooting.
To
access
the
GIA
and
GSA/GTA
Maintenance
Logs
1.
Start
the
system
in
configuration
mode.
2.
Use
the
FMS
knob
on
the
PFD
to
display
the
Diagnostics
Terminal
Page
in
the
system
group.
This
page
allows
the
technician
to
view
maintenance
logs
associated
with
the
GFC
700.
3.
Choose
‘GIA
1’
or
‘GIA
2’
in
the
LRU
window.
4.
In
the
SERVO
window,
choose
‘NONE’
to
view
the
GIA
Maintenance
Log,
or
choose
a
servo
to
view
their
logs.
5.
Using
the
FMS
knob,
choose
‘VIEW
MAINTENANCE
LOG’
in
the
COMMAND
window.
6.
Press
the
ENT
key.
7.
When
the
Maintenance
Log
data
starts
to
display
in
the
OUTPUT
window,
you
may
see
"More...press
any
key
to
continue..."
at
the
bottom
of
the
OUTPUT
window.
This
informs
you
there
is
more
data
to
display
and
the
system
has
paused
allowing
you
to
view
the
data
before
continuing.
To
see
more
of
the
data,
reselect
the
"VIEW
MAINTENANCE
LOG"
in
the
COMMAND
window
and
press
the
ENT
key.
The
"...press
any
key
to
continue..."
function
is
not
active
at
this
time.
8.
Scroll
through
the
OUTPUT
list
by
pressing
the
OUTPUT
softkey.
Summary of Contents for Cirrus Perspective SR20
Page 2: ......
