IBM 326m Hardware Maintenance Manual - Page 85

Removing, system, board

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Removing the system board Complete the following steps to remove the system board. Note: v Read "Installation guidelines" on page 29. v Read the safety notices at "Safety information" on page 107. v Read "Handling static-sensitive devices" on page 30. 1. Turn off the server and any attached devices. Note: When replacing the system board, you must either update the server with the latest firmware or restore the pre-existing firmware that the customer provides on a diskette or CD image. 2. Disconnect power cords and external cables from the back of the server. 3. Remove the server from the rack. 4. Remove the cover (see "Removing the cover and bezel" on page 32). 5. Remove all adapters (see "Installing an adapter" on page 33). 6. Remove all fans (see "Replacing a fan assembly" on page 50). 7. Remove the air baffle. 8. Remove the riser card (see "Riser card" on page 67). 9. Remove the screw securing the PCI adapter shield in position, and remove the PCI adapter shield, making sure to put them in a safe place for reinstallation. 10. Remove the SCSI backplane (see "SCSI backplane" on page 66). 11. Disconnect all cables from the system board. 12. Remove the heat sinks from all the microprocessors and set them aside on a static-protected surface for reinstallation (see "Installing an additional microprocessor" on page 44). 13. Remove all microprocessors and set them aside on a static-protected surface for reinstallation (see "Installing an additional microprocessor" on page 44). 14. Remove the memory modules and set them aside on a static-protected surface for reinstallation (see "Installing a memory module" on page 42). Note: The illustrations in this document might differ slightly from your hardware. Chapter 6. Service replaceable units 75

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Removing
the
system
board
Complete
the
following
steps
to
remove
the
system
board.
Note:
v
Read
“Installation
guidelines”
on
page
29.
v
Read
the
safety
notices
at
“Safety
information”
on
page
107.
v
Read
“Handling
static-sensitive
devices”
on
page
30.
1.
Turn
off
the
server
and
any
attached
devices.
Note:
When
replacing
the
system
board,
you
must
either
update
the
server
with
the
latest
firmware
or
restore
the
pre-existing
firmware
that
the
customer
provides
on
a
diskette
or
CD
image.
2.
Disconnect
power
cords
and
external
cables
from
the
back
of
the
server.
3.
Remove
the
server
from
the
rack.
4.
Remove
the
cover
(see
“Removing
the
cover
and
bezel”
on
page
32).
5.
Remove
all
adapters
(see
“Installing
an
adapter”
on
page
33).
6.
Remove
all
fans
(see
“Replacing
a
fan
assembly”
on
page
50).
7.
Remove
the
air
baffle.
8.
Remove
the
riser
card
(see
“Riser
card”
on
page
67).
9.
Remove
the
screw
securing
the
PCI
adapter
shield
in
position,
and
remove
the
PCI
adapter
shield,
making
sure
to
put
them
in
a
safe
place
for
reinstallation.
10.
Remove
the
SCSI
backplane
(see
“SCSI
backplane”
on
page
66).
11.
Disconnect
all
cables
from
the
system
board.
12.
Remove
the
heat
sinks
from
all
the
microprocessors
and
set
them
aside
on
a
static-protected
surface
for
reinstallation
(see
“Installing
an
additional
microprocessor”
on
page
44).
13.
Remove
all
microprocessors
and
set
them
aside
on
a
static-protected
surface
for
reinstallation
(see
“Installing
an
additional
microprocessor”
on
page
44).
14.
Remove
the
memory
modules
and
set
them
aside
on
a
static-protected
surface
for
reinstallation
(see
“Installing
a
memory
module”
on
page
42).
Note:
The
illustrations
in
this
document
might
differ
slightly
from
your
hardware.
Chapter
6.
Service
replaceable
units
75