IBM x3550 Installation Guide - Page 37

User's, Guide, Problem, Determination, Service

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v When you install an additional microprocessor, you must also install one additional cooling fan. See the User's Guide for more information on installing the additional fan. v If you have to replace a microprocessor, call for service. v The microprocessor speeds are automatically set for this server; therefore, you do not have to set any microprocessor frequency-selection jumpers or switches. v If the thermal-grease protective cover (for example, a plastic cap or tape liner) is removed from the heat sink, do not touch the thermal grease on the bottom of the heat sink or set down the heat sink. For details, see the information about thermal grease in the Problem and Determination Service Guide. Note: Removing the heat sink from the microprocessor destroys the even distribution of the thermal grease and requires replacing the thermal grease. Attention: v A startup (boot) microprocessor must always be installed in microprocessor socket 1 on the system board. v To ensure proper server operation when you install an additional microprocessor, use microprocessors that have the same cache size and type, and the same clock speed. Microprocessor internal and external clock frequencies must be identical. v Do not remove the first microprocessor from the system board to install the second microprocessor. The following instructions and illustrations describe how to install the second microprocessor on the system board. To install an additional microprocessor, complete the following steps: 1. Read the safety information that begins on page v and "Installation guidelines" on page 9. 2. Turn off the server and peripheral devices and disconnect the power cords and all external cables, if necessary (see "Turning off the server" on page 32). Remove the server cover. Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity. For details about handling these devices, see "Handling static-sensitive devices" on page 10. 3. Locate microprocessor socket 2 on the system board. 4. Remove the microprocessor dust cover from the surface of the microprocessor socket. Chapter 2. Installing options 23

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v
When
you
install
an
additional
microprocessor,
you
must
also
install
one
additional
cooling
fan.
See
the
User’s
Guide
for
more
information
on
installing
the
additional
fan.
v
If
you
have
to
replace
a
microprocessor,
call
for
service.
v
The
microprocessor
speeds
are
automatically
set
for
this
server;
therefore,
you
do
not
have
to
set
any
microprocessor
frequency-selection
jumpers
or
switches.
v
If
the
thermal-grease
protective
cover
(for
example,
a
plastic
cap
or
tape
liner)
is
removed
from
the
heat
sink,
do
not
touch
the
thermal
grease
on
the
bottom
of
the
heat
sink
or
set
down
the
heat
sink.
For
details,
see
the
information
about
thermal
grease
in
the
Problem
and
Determination
Service
Guide
.
Note:
Removing
the
heat
sink
from
the
microprocessor
destroys
the
even
distribution
of
the
thermal
grease
and
requires
replacing
the
thermal
grease.
Attention:
v
A
startup
(boot)
microprocessor
must
always
be
installed
in
microprocessor
socket
1
on
the
system
board.
v
To
ensure
proper
server
operation
when
you
install
an
additional
microprocessor,
use
microprocessors
that
have
the
same
cache
size
and
type,
and
the
same
clock
speed.
Microprocessor
internal
and
external
clock
frequencies
must
be
identical.
v
Do
not
remove
the
first
microprocessor
from
the
system
board
to
install
the
second
microprocessor.
The
following
instructions
and
illustrations
describe
how
to
install
the
second
microprocessor
on
the
system
board.
To
install
an
additional
microprocessor,
complete
the
following
steps:
1.
Read
the
safety
information
that
begins
on
page
v
and
“Installation
guidelines”
on
page
9.
2.
Turn
off
the
server
and
peripheral
devices
and
disconnect
the
power
cords
and
all
external
cables,
if
necessary
(see
“Turning
off
the
server”
on
page
32).
Remove
the
server
cover.
Attention:
When
you
handle
static-sensitive
devices,
take
precautions
to
avoid
damage
from
static
electricity.
For
details
about
handling
these
devices,
see
“Handling
static-sensitive
devices”
on
page
10.
3.
Locate
microprocessor
socket
2
on
the
system
board.
4.
Remove
the
microprocessor
dust
cover
from
the
surface
of
the
microprocessor
socket.
Chapter
2.
Installing
options
23