Chapter
5.
Service
replaceable
units
This
chapter
describes
the
removal
of
server
components.
Important:
The
field
replaceable
unit
(FRU)
procedures
are
intended
for
trained
servicers
who
are
familiar
with
IBM
xSeries
products.
See
the
parts
listing
in
“System”
on
page
160
to
determine
if
the
component
being
replaced
is
a
customer
replaceable
unit
(CRU)
or
a
FRU.
Microprocessor
removal
Complete
the
following
steps
to
remove
a
microprocessor.
Note:
v
Read
“Before
you
begin”
on
page
39.
v
Read
the
safety
notices
at
“Safety
information”
on
page
167.
v
Read
“Handling
electrostatic
discharge-sensitive
devices”
on
page
170
1.
Turn
off
the
server
and
disconnect
all
power
cords
and
external
cables;
then,
remove
the
server
cover
(see
“Removing
the
top
cover
and
bezel”
on
page
49).
2.
Remove
the
air
baffle:
a.
Pull
out
the
two
plastic
fasteners
(also
known
as
pop
rivets)
on
the
front
of
the
air
baffle.
Note:
Do
not
remove
the
fasteners
from
the
server.
b.
Grasp
the
handle
on
the
air
baffle;
then,
lift
the
air
baffle
from
the
server.
3.
Identify
the
microprocessor
to
be
removed.
Note:
If
you
are
replacing
a
failed
microprocessor,
verify
that
you
have
selected
the
correct
microprocessor
for
replacement.
To
do
this,
check
the
microprocessor
LEDs
on
the
system
board
to
see
which
LED
is
on.
4.
Remove
the
heat
sink:
a.
Loosen
one
captive
screw
fully;
then,
loosen
the
other
captive
screw.
Attention:
Loosening
one
screw
fully
before
loosening
the
other
screw
will
help
to
break
the
thermal
bond
that
adheres
the
heat
sink
to
the
microprocessor.
b.
Gently
pull
the
heat
sink
off
of
the
microprocessor.
5.
Rotate
the
locking
lever
on
the
microprocessor
socket
from
its
closed
and
locked
position
until
it
stops
or
clicks
in
the
fully
open
position
(approximately
135°
angle),
as
shown.
Then,
see
the
documentation
provided
with
the
microprocessor
option
for
complete
installation
instructions.
Attention:
You
must
ensure
that
the
locking
lever
on
the
microprocessor
socket
is
in
the
fully
open
position
before
you
insert
the
microprocessor
in
the
socket.
Failure
to
do
so
might
result
in
permanent
damage
to
the
microprocessor,
microprocessor
socket,
and
system
board.
©
Copyright
IBM
Corp.
2002
117
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