____________________________________________________________________
Page 5-18
Cirrus Perspective™ Line Maintenance Manual
Rev. E
190-00920-00
PFD
ARINC
429
Channel
LRU
Indicator
Status
IN
1
GRS
77
#1
PFD/GRS
77
#1
data
path
is
functioning
correctly.
PFD/GRS
77
#1
data
path
is
not
functioning
correctly.
•
Check
PFD
Alert
Window
for
PFD
or
GRS77
configuration
or
software
error
messages.
Correct
any
errors
before
proceeding.
Make
sure
the
GRS77
#1
status
is
OK
using
the
AUX
–
SYSTEM
STATUS
PAGE
on
the
MFD.
If
there
is
a
red
‐
x,
troubleshoot
why
the
GRS
is
offline
before
proceeding.
Make
sure
the
GRS77
#1
connecter
is
secure
and
proper
wire
harness
strain
relief
is
provided.
•
Swap
GRS77#1
and
GRS77
#2
(if
a
GRS77
#2
is
installed)
to
see
if
the
problem
is
in
the
original
GRS77
#1.
−
Replace
original
GRS77
#1
if
box
turns
green
after
swapping
units.
•
Swap
PFD
and
MFD
to
see
if
the
problem
is
in
the
PFD.
−
Replace
original
PFD
if
box
turns
green
after
swapping
displays.
•
Check
the
PFD/GRS
77
#1
interconnect
wiring
and
unit
connector
pins
for
faults.
•
Replace
GRS
77
#1.
PFD/GRS
77
#1
data
path
functionality
is
unknown.
Reload
PFD
configuration
file.
IN
2
GDC
74
#1
PFD/GDC
74A
#1
data
path
is
functioning
correctly
PFD/GDC
74A
#1
data
path
is
not
functioning
correctly.
•
Check
PFD
Alert
Window
for
PFD
or
GDC74
configuration
or
software
error
messages.
Correct
any
errors
before
proceeding.
Make
sure
the
GDC
74
#1
status
is
OK
using
the
System
Status
Page
on
the
MFD.
If
there
is
a
red
‐
x,
troubleshoot
why
the
GDC
is
offline
before
proceeding.
•
Swap
PFD
and
MFD
to
see
if
the
problem
is
in
the
original
PFD.
−
Replace
original
PFD
if
box
turns
green
after
swapping
displays.
•
Check
the
PFD/GDC
74
#1
interconnect
wiring
and
unit
connector
pins
for
faults.
Replace
GDC
74
#1
if
problem
remains.
PFD/GDC
74A
#1
data
path
functionality
is
unknown.
Reload
PFD
configuration
file.
Summary of Contents for Cirrus Perspective SR20
Page 2: ......