codes
may
also
be
shown
on
the
operator
panel
display
during
this
time.
AIX
progress
codes
and
location
codes
will
not
appear
if
the
LINUX
operating
system
is
booting.
Error
Codes
If
a
fault
is
detected,
an
8-digit
error
code
is
displayed
in
the
operator
panel
display.
A
location
code
may
be
displayed
at
the
same
time
on
the
second
line.
SRNs
Service
request
numbers,
in
the
form
xxx-xxx,
xxx-xxxx,
xxxx-xxx,
or
xxxx-xxxx
may
also
be
displayed
on
the
operator
panel
display
and
be
noted
in
the
AIX
error
log.
SRNs
will
not
appear
in
the
Linux
system
error
log
when
Linux
is
the
operating
system.
Checkpoints
can
become
error
codes
if
the
system
fails
to
advance
past
the
point
at
which
the
code
is
presented.
For
a
list
of
the
checkpoints,
see
Chapter
4,
“Checkpoints,”
on
page
105.
Each
entry
provides
a
description
of
the
event
and
the
recommended
action
if
the
system
fails
to
advance.
SRNs
are
listed
in
the
RS/6000
Eserver
pSeries
Diagnostic
Information
for
Multiple
Bus
Systems
,
order
number
SA38-0509.
FRU
Isolation
For
a
list
of
error
codes
and
recommended
actions
for
each
code,
see
Chapter
5,
“Error
Code
to
FRU
Index,”
on
page
131.
These
actions
can
refer
to
Chapter
10,
“Parts
Information,”
on
page
301,
Chapter
3,
“Maintenance
Analysis
Procedures
(MAPs),”
on
page
41,
or
provide
informational
message
and
directions.
If
a
replacement
part
is
indicated,
direct
reference
is
made
to
the
part
name.
The
respective
AIX
and
physical
location
codes
are
listed
for
each
occurrence
as
required.
For
a
list
of
locations
codes,
see
“Location
Codes”
on
page
19.
Note:
When
the
system
is
running
under
the
Linux
operating
system,
AIX
location
codes
are
not
available.
To
look
up
part
numbers
and
view
component
diagrams,
see
Chapter
10,
“Parts
Information,”
on
page
301.
The
beginning
of
that
chapter
provides
a
parts
index
with
the
predominant
field
replaceable
units
(FRUs)
listed
by
name.
The
remainder
of
the
chapter
provides
illustrations
of
the
various
assemblies
and
components
that
make
up
the
system.
FRU
Identify
LEDs
This
system
is
configured
with
an
arrangement
of
LEDs
that
help
identify
various
components
of
the
system.
These
include,
but
are
not
limited
to
the
following:
v
Power
subsystem
FRUs
v
System
unit
FRUs
v
I/O
adapter
identify
LED
v
DASD
identify
LED
The
identify
LEDs
are
arranged
hierarchically,
with
the
FRU
identify
LED
at
the
bottom
of
the
hierarchy,
followed
by
the
corresponding
system
unit
or
I/O
drawer
identify
LED
to
locate
the
failing
FRU
more
easily.
Any
identify
LED
in
the
system
can
be
flashed
when
the
system
is
in
the
failed
state
with
power
on
by
using
the
service
processor
LED
Control
Menu
contained
in
the
“System
Information
Menu”
on
page
205.
Any
identify
LED
in
the
system
can
also
be
flashed
by
using
the
″
Identify
and
Attention
Indicators
″
task
in
AIX
online
diagnostics.
The
procedure
to
operate
the
″
Identify
and
Attention
Indicators
″
task
in
diagnostics
is
outlined
in
the
RS/6000
Eserver
pSeries
Diagnostic
Information
for
Multiple
Bus
Systems
.
If
the
service
processor
menus
and
the
AIX
diagnostics
are
not
available,
the
FRU
identify
LEDs
can
be
flashed
by
one
of
following:
Chapter
2.
Diagnostic
Overview
35
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