Removing
and
replacing
Tier
1
CRUs
Replacement
of
Tier
1
CRUs
is
your
responsibility.
If
IBM
installs
a
Tier
1
CRU
at
your
request,
you
will
be
charged
for
the
installation.
The
illustrations
in
this
document
might
differ
slightly
from
your
hardware.
Removing
the
cover
Attention:
For
proper
cooling
and
airflow,
replace
the
cover
before
turning
on
the
server.
Operating
the
server
for
more
than
2
minutes
with
the
cover
removed
might
damage
server
components.
To
remove
the
cover,
complete
the
following
steps.
Thumbscrews
1.
Read
the
safety
information
that
begins
on
page
and
2.
Turn
off
the
server
and
all
peripheral
devices;
then,
disconnect
the
power
cords
and
all
external
cables.
3.
Lay
the
server
on
its
right
side.
4.
Remove
the
two
thumbscrews
at
the
rear
of
the
cover.
5.
Lift
the
rear
of
the
cover
and
pull
it
toward
the
rear
of
the
server
to
disengage
the
front
edge
from
the
chassis.
6.
If
you
are
instructed
to
return
the
cover,
follow
all
packaging
instructions,
and
use
any
packaging
materials
for
shipping
that
are
supplied
to
you.
7.
If
you
are
not
returning
the
cover,
store
it
and
the
thumbscrews
in
a
safe
place
for
reuse.
Chapter
4.
Removing
and
replacing
server
components
57
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