____________________________________________________________________
Cirrus Perspective™ Line Maintenance Manual
Page 5-17
190-00920-00
Rev.
E
GDU
RS
‐
232
/
ARINC
429
CONFIG
Page
PFD
RS
‐
232
Channel
LRU
Indicator
Status
CHNL
1
GCU
478
PFD/GCU
478
data
path
is
functioning
correctly.
PFD/GCU
478
data
path
is
not
functioning
correctly.
•
Check
PFD
Alert
Window
for
PFD
or
GCU
configuration
or
software
error
messages.
Correct
any
errors
before
proceeding.
Make
sure
the
GCU
is
powered
on
by
pressing
the
“ANN
TEST”
softkey
on
the
MFD
AUX
‐
SYSTEM
STATUS
page
to
see
if
the
key
indicators
turn
on.
•
If
GCU
will
not
power
on,
remove
unit
and
make
sure
power
and
ground
are
present
at
the
GCU
connector.
−
If
power
or
ground
is
not
present,
troubleshoot
aircraft
wiring
for
faults.
If
power
and
ground
are
present,
check
the
PFD
and
GCU
connector
for
damaged
or
pushed
back
pins.
•
Swap
PFD
and
MFD
to
see
if
the
problem
is
in
the
PFD.
−
Replace
original
PFD
if
box
turns
green
after
swapping
displays.
•
Replace
the
GCU.
PFD/GCU
478
data
path
functionality
is
unknown.
Reload
PFD
configuration
file.
CHNL
2
GMC
705
PFD/GMC
705
data
path
is
functioning
correctly.
PFD/GMC
705
data
path
is
not
functioning
correctly.
•
Check
PFD
Alert
Window
for
PFD
or
GMC
configuration
or
software
error
messages.
Correct
any
errors
before
proceeding.
Make
sure
the
GMC
is
powered
on
by
pressing
the
“ANN
TEST”
softkey
on
the
MFD
AUX
‐
SYSTEM
STATUS
page
to
see
if
the
key
indicators
turn
on.
•
If
GMC
will
not
turn
on,
remove
unit
and
make
sure
power
and
ground
are
present
at
the
GMC
connector.
−
If
power
or
ground
is
not
present,
troubleshoot
aircraft
wiring
for
faults.
If
power
and
ground
are
present,
check
the
PFD
and
GMC
connector
for
damaged
or
pushed
back
pins.
•
Swap
PFD
and
MFD
to
see
if
the
problem
is
in
the
PFD.
Replace
original
PFD
if
box
turns
green
after
swapping
displays.
Replace
the
GMC.
PFD/GMC
705
data
path
functionality
is
unknown.
Reload
PFD
configuration
file.
Summary of Contents for Cirrus Perspective SR20
Page 2: ......