__________________________________________________________________________
SECTION
6
LRU
REPLACEMENT
PROCEDURES
NOTE
LRUs
must
be
configured
and
tested
after
removal
and
replacement.
Refer
to
Section
7.
This
section
contains
replacement
procedures
for
a
defective
LRU.
Replacement
of
an
LRU
is
on
condition
of
failure.
6.1
ACCESSING
LRUs
Refer
to
the
installation
and
outline
drawings
in
each
LRU
installation
manual
for
detailed
installation/removal
information.
Before
removing
any
LRU,
verify
the
LRU
software
part
number
and
version
against
the
software
configuration
listed
in
the
Required
Equipment
List.
To
check
an
LRU
software
part
number
and/or
version:
1.
Start
the
system
in
configuration
mode.
2.
The
System
Status
Page
(Figure
6
‐
1)
shows
a
list
of
LRUs
in
the
LRU
window.
Activate
the
cursor
and
use
the
FMS
knob
to
scroll
through
the
list
in
the
window
and
select
the
displayed
LRUs.
3.
The
software
part
number
and
version
is
displayed
in
the
DATA
window.
Compare
this
to
the
software
configuration
in
the
Required
Equipment
List.
4.
If
a
faulty
LRU
is
not
reporting
its
software
version
and
part
number,
check
aircraft
maintenance
logs
for
the
last
software
version
that
was
loaded
and
verify
against
the
the
Required
Equipment
List.
The
Software
Manifest
Page
can
also
be
used
to
check
part
numbers
and
versions.
Figure
6
‐
1.
System
Status
Page
(Configuration
Mode)
Cirrus Perspective™ Line Maintenance Manual
Page 6-1
190-00920-00
Rev.
E
Summary of Contents for Cirrus Perspective SR20
Page 2: ......
