IBM 8835 Hardware Maintenance Manual - Page 80

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 25. v Read the safety notices at "Safety information" on page 101. v Read "Handling static-sensitive devices" on page 25. 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 27). 5. Remove all adapters (see "Working with adapters" on page 28). 6. Remove all fans (see "Replacing a fan assembly" on page 45). 7. Remove the air baffle. 8. Remove the riser card (see "Riser card" on page 61). 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 60). 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 a microprocessor" on page 39). 13. Remove all microprocessors and set them aside on a static-protected surface for reinstallation (see "Installing a microprocessor" on page 39). 14. Remove the memory modules and set them aside on a static-protected surface for reinstallation (see "Installing memory modules" on page 37). Note: The illustrations in this publication might differ slightly from your hardware. 70 325 Type 8835: Hardware Maintenance Manual and Troubleshooting Guide Eserver

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Removing
the
system
board
Complete
the
following
steps
to
remove
the
system
board.
Note:
v
Read
“Installation
guidelines”
on
page
25.
v
Read
the
safety
notices
at
“Safety
information”
on
page
101.
v
Read
“Handling
static-sensitive
devices”
on
page
25.
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
27).
5.
Remove
all
adapters
(see
“Working
with
adapters”
on
page
28).
6.
Remove
all
fans
(see
“Replacing
a
fan
assembly”
on
page
45).
7.
Remove
the
air
baffle.
8.
Remove
the
riser
card
(see
“Riser
card”
on
page
61).
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
60).
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
a
microprocessor”
on
page
39).
13.
Remove
all
microprocessors
and
set
them
aside
on
a
static-protected
surface
for
reinstallation
(see
“Installing
a
microprocessor”
on
page
39).
14.
Remove
the
memory
modules
and
set
them
aside
on
a
static-protected
surface
for
reinstallation
(see
“Installing
memory
modules”
on
page
37).
Note:
The
illustrations
in
this
publication
might
differ
slightly
from
your
hardware.
70
Eserver
325
Type
8835:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide