Light
path
diagnostics
Light
path
diagnostics
is
a
system
of
LEDs
on
the
control
panel
and
on
various
internal
components
of
the
blade
server.
When
an
error
occurs,
LEDs
are
lit
throughout
the
blade
server.
By
viewing
the
LEDs
in
a
particular
order,
you
can
often
identify
the
source
of
the
error.
Some
internal
components
contain
LEDs
that
can
be
lit
for
a
short
time
after
you
remove
the
blade
server
from
the
BladeCenter
unit.
After
you
remove
the
blade
server,
you
can
press
and
hold
the
light
path
diagnostics
switch
for
a
maximum
of
25
seconds
to
light
the
LEDs
that
were
lit
before
you
removed
the
blade
server
from
the
BladeCenter
unit.
Power
remains
available
to
light
these
LEDs
for
up
to
24
hours
after
the
component
is
removed
from
the
server.
The
following
components
have
this
feature:
v
Microprocessors
v
Memory
modules
(DIMMs)
v
Light
path
diagnostics
panel
Viewing
the
light
path
diagnostics
LEDs
Before
working
inside
the
server
to
view
light
path
diagnostics
LEDs,
read
the
safety
information
that
begins
on
page
and
If
an
error
occurs,
view
the
light
path
diagnostics
LEDs
in
the
following
order:
1.
Look
at
the
control
panel
on
the
front
of
the
server
(see
v
If
the
information
LED
is
lit,
it
indicates
that
information
about
a
suboptimal
condition
in
the
server
is
available
in
the
BMC
log
or
in
the
management-module
event
log.
v
If
the
blade-error
LED
is
lit,
it
indicates
that
an
error
has
occurred;
go
to
step
2.
To
view
the
light
path
diagnostics
panel
and
LEDs,
complete
the
following
steps:
a.
Remove
the
blade
server
from
the
BladeCenter
unit.
b.
Place
the
blade
server
on
a
flat,
static-protective
surface.
c.
Remove
the
cover
from
the
blade
server.
d.
Press
and
hold
the
light
path
diagnostics
switch
to
relight
the
LEDs
that
were
lit
before
you
removed
the
blade
server
from
the
BladeCenter
unit.
The
LEDs
will
remain
lit
for
as
long
as
you
press
the
switch,
to
a
maximum
of
25
seconds.
40
AMD
Opteron
LS20
Type
8850
for
IBM
BladeCenter:
Problem
Determination
and
Service
Guide
Содержание Opteron LS20
Страница 1: ...AMD Opteron LS20 Type 8850 for IBM BladeCenter Problem Determination and Service Guide...
Страница 2: ......
Страница 3: ...AMD Opteron LS20 Type 8850 for IBM BladeCenter Problem Determination and Service Guide...
Страница 14: ...xii AMD Opteron LS20 Type 8850 for IBM BladeCenter Problem Determination and Service Guide...
Страница 70: ...56 AMD Opteron LS20 Type 8850 for IBM BladeCenter Problem Determination and Service Guide...
Страница 102: ...88 AMD Opteron LS20 Type 8850 for IBM BladeCenter Problem Determination and Service Guide...
Страница 112: ...98 AMD Opteron LS20 Type 8850 for IBM BladeCenter Problem Determination and Service Guide...
Страница 113: ......
Страница 114: ...Part Number 24R9677 Printed in USA 1P P N 24R9677...