IBM 8676 Hardware Maintenance Manual - Page 86

System, board

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System board Complete the following steps to remove the system board. Note: v Read "Installation guidelines" on page 37. v Read the safety notices at "Safety information" on page 119. v Read "Handling electrostatic discharge-sensitive devices" on page 122. 1. Turn off the server and any attached devices. Note: When replacing the system board, you must either update the system 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 44). 5. Remove the air baffle. 6. Remove all adapters (see "Working with adapters" on page 45). 7. Remove all fans (see "Replacing a fan assembly" on page 56). 8. Remove the riser card (see "Riser card" on page 75). 9. Remove the SCSI backplane (see "SCSI backplane" on page 74). 10. Disconnect all cables from the system board. 11. Remove all microprocessors and removable VRMs and set them aside on a static-protected surface for reinstallation (see "Installing a microprocessor" on page 52). 12. Remove the memory modules and set them aside on a static-protected surface for reinstallation (see "Installing memory modules" on page 51). Note: The illustrations in this publication might differ slightly from your hardware. 76 xSeries 335 Type 8676, Type 8830: Hardware Maintenance Manual and Troubleshooting Guide

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System
board
Complete
the
following
steps
to
remove
the
system
board.
Note:
v
Read
“Installation
guidelines”
on
page
37.
v
Read
the
safety
notices
at
“Safety
information”
on
page
119.
v
Read
“Handling
electrostatic
discharge-sensitive
devices”
on
page
122.
1.
Turn
off
the
server
and
any
attached
devices.
Note:
When
replacing
the
system
board,
you
must
either
update
the
system
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
44).
5.
Remove
the
air
baffle.
6.
Remove
all
adapters
(see
“Working
with
adapters”
on
page
45).
7.
Remove
all
fans
(see
“Replacing
a
fan
assembly”
on
page
56).
8.
Remove
the
riser
card
(see
“Riser
card”
on
page
75).
9.
Remove
the
SCSI
backplane
(see
“SCSI
backplane”
on
page
74).
10.
Disconnect
all
cables
from
the
system
board.
11.
Remove
all
microprocessors
and
removable
VRMs
and
set
them
aside
on
a
static-protected
surface
for
reinstallation
(see
“Installing
a
microprocessor”
on
page
52).
12.
Remove
the
memory
modules
and
set
them
aside
on
a
static-protected
surface
for
reinstallation
(see
“Installing
memory
modules”
on
page
51).
Note:
The
illustrations
in
this
publication
might
differ
slightly
from
your
hardware.
76
xSeries
335
Type
8676,
Type
8830:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide