Light
path
diagnostics
LEDs
The
following
table
lists
the
LEDs
on
the
light
path
diagnostics
panel,
the
problems
that
they
indicate,
and
actions
to
solve
the
problems.
LED
Problem
Action
POWER
SUPPLY
1
Lit
LED:
Power
supply
1
has
failed.
1.
Remove
ac
power
from
the
server.
2.
Replace
the
power
supply;
then,
reconnect
the
server
to
ac
power
and
restart
the
server.
Flashing
LED:
Power
supply
1
was
removed
in
a
redundant
power-supply
configuration.
Install
a
new
power
supply
in
the
PS1
location.
POWER
SUPPLY
2
Lit
LED:
Power
supply
2
has
failed.
1.
Remove
ac
power
from
the
server.
2.
Replace
the
power
supply;
then,
reconnect
the
server
to
ac
power
and
restart
the
server.
Flashing
LED:
Power
supply
2
was
removed
in
a
redundant
power
supply
configuration.
Install
a
new
power
supply
in
the
PS2
location.
MEMORY
A
memory
error
has
occurred.
Replace
the
failing
DIMM,
indicated
by
the
lit
LED
on
the
system
board.
CONFIG
See
the
note
following
this
table.
See
the
note
following
this
table.
DASD/RAID
A
hard
disk
drive,
integrated
SCSI
controller,
or
integrated
RAID
error
has
occurred.This
LED
will
also
be
lit
when
a
hard
disk
drive
is
removed
from
the
server.
v
Check
the
LEDs
on
the
hard
disk
drives
and
replace
the
indicated
drive.
v
Check
the
LEDs
on
the
system
board
and
replace
the
indicated
component.
v
If
a
hard
disk
drive
LED
remains
lit
after
being
replaced,
call
for
service.
TEMP
The
system
temperature
has
exceeded
a
threshold
level.
v
Determine
whether
a
fan
has
failed.
If
it
has,
replace
it.
v
Make
sure
that
the
room
temperature
is
not
too
high.
See
“Features
and
specifications”
on
page
5
for
temperature
information.
v
Make
sure
that
the
air
vents
are
not
blocked.
If
the
problem
remains,
call
for
service.
FAN
A
fan
has
failed
or
is
operating
too
slowly.
A
failing
fan
can
also
cause
the
TEMP
LED
to
be
lit.
Replace
the
failing
fan,
indicated
by
the
lit
LED.
CPU
A
microprocessor
has
failed.
If
a
lit
LED
on
the
system
board
indicates
a
problem
with
a
microprocessor,
make
sure
that
the
microprocessor
is
installed
correctly.
See
the
Option
Installation
Guide
on
the
IBM
xSeries
Documentation
CD
for
information
about
installing
a
microprocessor.
If
the
problem
remains,
call
for
service.
S_ERR
A
soft
error
has
occurred.
1.
Restart
the
server.
2.
Update
the
firmware
and
adapter
drivers.
3.
Check
the
POST
error
log
If
the
problem
remains,
call
for
service.
VRM
The
VRM
or
integrated
VRD
has
failed.
v
Remove
ac
power
from
the
server,
and
then
restart
the
server.
v
If
the
LED
next
to
the
VRM
is
lit,
replace
the
pluggable
VRM.
v
If
the
LED
next
to
the
integrated
VRD
is
lit,
call
for
service.
Chapter
6.
Solving
problems
53
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