____________________________________________________________________
Cirrus Perspective™ Line Maintenance Manual
Page 5-69
190-00920-00
Rev.
E
5.8.8
GPS
Related
Alerts
NOTE
Before
troubleshooting,
make
sure
no
cell
phones
or
devices
using
cell
phone
technology
are
turned
on
in
the
cabin
(even
in
a
monitoring
state).
Message
Cause
Solutions
GPS1
SERVICE
–
GPS1
needs
service.
Return
unit
for
repair.
The
System
has
detected
a
failure
in
GPS1
receiver.
•
Replace
GIA1.
GPS2
SERVICE
–
GPS2
needs
service.
Return
unit
for
repair.
The
system
has
detected
a
failure
in
GPS2
receiver.
•
Replace
GIA2.
GPS1
FAIL
–
GPS1
is
inoperative.
The
system
has
detected
a
failure
in
GPS1
receiver.
•
Switch
GIA1
and
GIA2,
to
verify
location
of
problem:
−
If
problem
follows
the
unit,
replace
GIA1.
If
problem
does
not
follow
the
unit,
check
GPS1
antenna
and
cabling.
GPS2
FAIL
–
GPS2
is
inoperative.
The
system
has
detected
a
failure
in
GPS2
receiver.
•
Switch
GIA1
and
GIA2,
to
verify
location
of
problem:
−
If
problem
follows
the
unit,
replace
GIA2.
−
If
problem
does
not
follow
the
unit,
check
GPS2
antenna
and
cabling.
GPS
NAV
LOST
–
Loss
of
GPS
navigation.
GPS
fail.
The
system
has
lost
GPS
navigation
information.
•
Make
sure
that
the
area
the
aircraft
was
traveling
through
did
not
have
loss
of
GPS
coverage.
FAA
NOTAMs
may
be
issued
for
periods
of
outages,
or
the
US
Coast
Guard
website
have
notices
posted.
•
Using
the
MFD
AUX
–
GPS
Status
page,
make
sure
the
signal
strength
bars
are
not
erratic.
If
so,
this
indicates
outside
interference
is
affecting
the
GPS
receivers.
Find
and
remove
the
source
of
interference
(i.e.
cell
phones,
FBO
datalink
antennas,
etc.).
•
Check
GPS
antenna
and
cabling.
Summary of Contents for Cirrus Perspective SR20
Page 2: ......
