IBM 8872 Service Guide - Page 125

Removing, replacing

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1. Insert the memory card into the memory card connector. 2. Press the memory card into the connector and close the locking levers. 3. Install the top cover (see "Top cover and bezel" on page 113). 4. Slide the server into the rack. Removing and replacing a DIMM DIMMs must be installed in pairs of the same type and speed. To use the memory mirroring feature, all the DIMMs that are installed in the server must be of the same type and speed, and the operating system must support memory mirroring. To remove a DIMM, complete the following steps: DIMM Retaining clip 1. Read the safety information that begins on page vii and "Installation guidelines" on page 99. 2. If you are removing a non-hot-swap DIMM, turn off the server and peripheral devices, and disconnect the power cords and all external cables necessary to replace the device. 3. Remove the top cover (see "Top cover and bezel" on page 113). Attention: To ensure proper cooling and airflow, do not operate the server for more than 2 minutes with the top cover removed. 4. Remove the memory card (see "Removing and replacing a memory card" on page 108). 5. Place the memory card on a flat surface with the DIMM connectors facing up. Attention: To avoid breaking the DIMM retaining clips or damaging the DIMM connectors, open and close the clips gently. 6. Open the retaining clip on each end of the DIMM connector and remove the DIMM from the connector. Chapter 4. Removing and replacing server components 109

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1.
Insert
the
memory
card
into
the
memory
card
connector.
2.
Press
the
memory
card
into
the
connector
and
close
the
locking
levers.
3.
Install
the
top
cover
(see
“Top
cover
and
bezel”
on
page
113).
4.
Slide
the
server
into
the
rack.
Removing
and
replacing
a
DIMM
DIMMs
must
be
installed
in
pairs
of
the
same
type
and
speed.
To
use
the
memory
mirroring
feature,
all
the
DIMMs
that
are
installed
in
the
server
must
be
of
the
same
type
and
speed,
and
the
operating
system
must
support
memory
mirroring.
To
remove
a
DIMM,
complete
the
following
steps:
DIMM
Retaining
clip
1.
Read
the
safety
information
that
begins
on
page
vii
and
“Installation
guidelines”
on
page
99.
2.
If
you
are
removing
a
non-hot-swap
DIMM,
turn
off
the
server
and
peripheral
devices,
and
disconnect
the
power
cords
and
all
external
cables
necessary
to
replace
the
device.
3.
Remove
the
top
cover
(see
“Top
cover
and
bezel”
on
page
113).
Attention:
To
ensure
proper
cooling
and
airflow,
do
not
operate
the
server
for
more
than
2
minutes
with
the
top
cover
removed.
4.
Remove
the
memory
card
(see
“Removing
and
replacing
a
memory
card”
on
page
108).
5.
Place
the
memory
card
on
a
flat
surface
with
the
DIMM
connectors
facing
up.
Attention:
To
avoid
breaking
the
DIMM
retaining
clips
or
damaging
the
DIMM
connectors,
open
and
close
the
clips
gently.
6.
Open
the
retaining
clip
on
each
end
of
the
DIMM
connector
and
remove
the
DIMM
from
the
connector.
Chapter
4.
Removing
and
replacing
server
components
109