IBM 8478 Hardware Maintenance Manual - Page 73

Removing, installing, microprocessor

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a. If you are installing a DIMM in connector 1, remove the AGP adapter. Remove the AGP adapter only if you are replacing the DIMM in connector 1. See "System and PCI extender board options connectors" on page 41 for the location of the AGP slot. See "Installing an adapter" on page 51 for details about removing the AGP adapter. b. Open the retaining clip on each end of the DIMM slot. Turn the DIMM so that the pins align correctly with the connector. Attention: To avoid breaking the retaining clips or damaging the DIMM connectors, open and close the clips gently. c. Insert the DIMM into the connector by aligning the DIMM edges with the slots at each end of the DIMM connector. Firmly press the DIMM straight down into the connector by applying pressure on both ends of the DIMM simultaneously. Be sure that the retaining clips snap into the locked position when the DIMM is firmly seated in the connector. d. If a gap exists between the DIMM and the retaining clips, the DIMM has not been properly installed. In this case, open the retaining clips and remove the DIMM; then, reinsert the DIMM. e. If you removed the AGP adapter, reinstall it now, see "Installing an adapter" on page 51. 7. If you have other options to install or remove, do so now. 8. Replace the support bracket assembly and reconnect the fan cable to the connector (SYSFA3) on the system board. See "Removing the support bracket assembly" on page 49 and "System board internal cable connectors" on page 42 for the location of the fan cable connector. 9. Replace the side cover, see "Installing the cover" on page 70. 10. Reconnect the external cables and power cords, and turn on the peripheral devices and the server. If you want to remove a DIMM, reverse the previous steps. Removing and installing a microprocessor The server only supports one microprocessor, which is installed on the system board in the microprocessor connector (U5). Chapter 5. Installing options 63

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a.
If
you
are
installing
a
DIMM
in
connector
1,
remove
the
AGP
adapter.
Remove
the
AGP
adapter
only
if
you
are
replacing
the
DIMM
in
connector
1.
See
“System
and
PCI
extender
board
options
connectors”
on
page
41
for
the
location
of
the
AGP
slot.
See
“Installing
an
adapter”
on
page
51
for
details
about
removing
the
AGP
adapter.
b.
Open
the
retaining
clip
on
each
end
of
the
DIMM
slot.
Turn
the
DIMM
so
that
the
pins
align
correctly
with
the
connector.
Attention:
To
avoid
breaking
the
retaining
clips
or
damaging
the
DIMM
connectors,
open
and
close
the
clips
gently.
c.
Insert
the
DIMM
into
the
connector
by
aligning
the
DIMM
edges
with
the
slots
at
each
end
of
the
DIMM
connector.
Firmly
press
the
DIMM
straight
down
into
the
connector
by
applying
pressure
on
both
ends
of
the
DIMM
simultaneously.
Be
sure
that
the
retaining
clips
snap
into
the
locked
position
when
the
DIMM
is
firmly
seated
in
the
connector.
d.
If
a
gap
exists
between
the
DIMM
and
the
retaining
clips,
the
DIMM
has
not
been
properly
installed.
In
this
case,
open
the
retaining
clips
and
remove
the
DIMM;
then,
reinsert
the
DIMM.
e.
If
you
removed
the
AGP
adapter,
reinstall
it
now,
see
“Installing
an
adapter”
on
page
51.
7.
If
you
have
other
options
to
install
or
remove,
do
so
now.
8.
Replace
the
support
bracket
assembly
and
reconnect
the
fan
cable
to
the
connector
(SYSFA3)
on
the
system
board.
See
“Removing
the
support
bracket
assembly”
on
page
49
and
“System
board
internal
cable
connectors”
on
page
42
for
the
location
of
the
fan
cable
connector.
9.
Replace
the
side
cover,
see
“Installing
the
cover”
on
page
70.
10.
Reconnect
the
external
cables
and
power
cords,
and
turn
on
the
peripheral
devices
and
the
server.
If
you
want
to
remove
a
DIMM,
reverse
the
previous
steps.
Removing
and
installing
a
microprocessor
The
server
only
supports
one
microprocessor,
which
is
installed
on
the
system
board
in
the
microprocessor
connector
(U5).
Chapter
5.
Installing
options
63