IBM 8649 Hardware Maintenance Manual - Page 85

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Chapter 5. Field replaceable units The following information describes procedures for removing and installing certain components inside the system. Only a qualified service technician is authorized to replace the components described in this section. Important: The field replaceable unit (FRU) procedures are intended for trained servicers who are familiar with IBM xSeries products. See the parts listing in "System replaceable units" on page 122 to determine if the component being replaced is a customer replaceable unit (CRU) or a FRU. Note: Before servicing this system, read "Installation guidelines" on page 33 and "Safety information" on page 129 Power button Before you begin: v Read the "Installation guidelines" on page 33 v Read "Safety information" on page 129 v Review the information in "System reliability considerations" on page 33 To remove the power button, complete the following steps: 1. Turn off the server, if it is on. 2. Unplug the server, and disconnect the power cord; then, disconnect all external cables. 3. Remove the side cover. See "Removing the side cover" on page 36 4. Remove the front bezel. See "Removing the bezel" on page 37 5. If your server has hot-swap hard disk drives installed, remove them. See "Hot-swap hard disk drive cage" on page 79 6. Disconnect the SCSI signal cable from the backplane. Note: Be sure to remove the hot-swap drive bay filler panels so that they are not damaged. 7. Push downward on the cage-release latch, and rotate the drive cage outward until it locks in the vertical position, so that you can reach through to the other side of the power-switch and LED panel cable. 8. To remove the power-switch and LED panel, press in on the tab on the left side of the panel; then, squeeze the top and bottom of the right-side of the panel and carefully pull the panel away from the system. © Copyright IBM Corp. 2004 75

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Chapter
5.
Field
replaceable
units
The
following
information
describes
procedures
for
removing
and
installing
certain
components
inside
the
system.
Only
a
qualified
service
technician
is
authorized
to
replace
the
components
described
in
this
section.
Important:
The
field
replaceable
unit
(FRU)
procedures
are
intended
for
trained
servicers
who
are
familiar
with
IBM
xSeries
products.
See
the
parts
listing
in
“System
replaceable
units”
on
page
122
to
determine
if
the
component
being
replaced
is
a
customer
replaceable
unit
(CRU)
or
a
FRU.
Note:
Before
servicing
this
system,
read
“Installation
guidelines”
on
page
33
and
“Safety
information”
on
page
129
Power
button
Before
you
begin:
v
Read
the
“Installation
guidelines”
on
page
33
v
Read
“Safety
information”
on
page
129
v
Review
the
information
in
“System
reliability
considerations”
on
page
33
To
remove
the
power
button,
complete
the
following
steps:
1.
Turn
off
the
server,
if
it
is
on.
2.
Unplug
the
server,
and
disconnect
the
power
cord;
then,
disconnect
all
external
cables.
3.
Remove
the
side
cover.
See
“Removing
the
side
cover”
on
page
36
4.
Remove
the
front
bezel.
See
“Removing
the
bezel”
on
page
37
5.
If
your
server
has
hot-swap
hard
disk
drives
installed,
remove
them.
See
“Hot-swap
hard
disk
drive
cage”
on
page
79
6.
Disconnect
the
SCSI
signal
cable
from
the
backplane.
Note:
Be
sure
to
remove
the
hot-swap
drive
bay
filler
panels
so
that
they
are
not
damaged.
7.
Push
downward
on
the
cage-release
latch,
and
rotate
the
drive
cage
outward
until
it
locks
in
the
vertical
position,
so
that
you
can
reach
through
to
the
other
side
of
the
power-switch
and
LED
panel
cable.
8.
To
remove
the
power-switch
and
LED
panel,
press
in
on
the
tab
on
the
left
side
of
the
panel;
then,
squeeze
the
top
and
bottom
of
the
right-side
of
the
panel
and
carefully
pull
the
panel
away
from
the
system.
©
Copyright
IBM
Corp.
2004
75