IBM 622020U Maintenance Manual - Page 94

Important, Before, begin

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7. Remove the 12 screws that secure the system board to the chassis, and put them in a safe place. Note: Four of the screws described in step 7 secure the heat-sink retention module to the heat-sink retention clip, with the system board in between them. It is easier to remove these screws while the system board is positioned in the chassis. 8. Remove the heat-sink retention module, and set it aside. 9. Gently slide the system board slightly toward the front of the computer until it disengages from the chassis; then, lift the board up and out of the computer. 10. Remove the heat-sink retention clip. To install the system board, reverse the previous steps. IntelliStation M Pro Type 6230 (tower model) The following information describes procedures for removing and installing certain components inside the system. Only a qualified service technician is authorized to access the components described in this section. Important: The field replaceable unit (FRU) procedures are intended for trained servicers who are familiar with IBM IntelliStation products. See the parts listing in "Type 6230" on page 122 to determine whether the component being replaced is a customer replaceable unit (CRU) or a FRU. Note: Before servicing this computer, read "Installation guidelines" on page 31. Removing the front bezel Before you begin: v Read "Safety information" on page 129. v Read "Installation guidelines" on page 31. v Review the information in "System reliability considerations" on page 31. Complete the following steps to remove the bezel: 1. Review the information in "System reliability considerations" on page 31. 2. Turn off the server and peripheral devices, and disconnect all power cords and then all external cables. 3. Remove the side cover (see "Removing the side cover" on page 52). 4. Press the bezel-release latch at the top of the computer to disconnect the top of the bezel from the computer. 84 IBM IntelliStation M Pro Types 6220 and 6230: Hardware Maintenance Manual

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7.
Remove
the
12
screws
that
secure
the
system
board
to
the
chassis,
and
put
them
in
a
safe
place.
Note:
Four
of
the
screws
described
in
step
7
secure
the
heat-sink
retention
module
to
the
heat-sink
retention
clip,
with
the
system
board
in
between
them.
It
is
easier
to
remove
these
screws
while
the
system
board
is
positioned
in
the
chassis.
8.
Remove
the
heat-sink
retention
module,
and
set
it
aside.
9.
Gently
slide
the
system
board
slightly
toward
the
front
of
the
computer
until
it
disengages
from
the
chassis;
then,
lift
the
board
up
and
out
of
the
computer.
10.
Remove
the
heat-sink
retention
clip.
To
install
the
system
board,
reverse
the
previous
steps.
IntelliStation
M
Pro
Type
6230
(tower
model)
The
following
information
describes
procedures
for
removing
and
installing
certain
components
inside
the
system.
Only
a
qualified
service
technician
is
authorized
to
access
the
components
described
in
this
section.
Important:
The
field
replaceable
unit
(FRU)
procedures
are
intended
for
trained
servicers
who
are
familiar
with
IBM
IntelliStation
products.
See
the
parts
listing
in
“Type
6230”
on
page
122
to
determine
whether
the
component
being
replaced
is
a
customer
replaceable
unit
(CRU)
or
a
FRU.
Note:
Before
servicing
this
computer,
read
“Installation
guidelines”
on
page
31.
Removing
the
front
bezel
Before
you
begin:
v
Read
“Safety
information”
on
page
129.
v
Read
“Installation
guidelines”
on
page
31.
v
Review
the
information
in
“System
reliability
considerations”
on
page
31.
Complete
the
following
steps
to
remove
the
bezel:
1.
Review
the
information
in
“System
reliability
considerations”
on
page
31.
2.
Turn
off
the
server
and
peripheral
devices,
and
disconnect
all
power
cords
and
then
all
external
cables.
3.
Remove
the
side
cover
(see
“Removing
the
side
cover”
on
page
52).
4.
Press
the
bezel-release
latch
at
the
top
of
the
computer
to
disconnect
the
top
of
the
bezel
from
the
computer.
84
IBM
IntelliStation
M
Pro
Types
6220
and
6230:
Hardware
Maintenance
Manual