IBM 86884RX Maintenance Manual - Page 117

Replacing, troubleshooting

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8. Carefully install the processor-board assembly and retention bracket. 9. Carefully install the memory-board assembly. 10. If you have other options to install or remove, do so now. Otherwise, go to "Completing the installation" on page 111. Replacing and troubleshooting fans Your xSeries 450 server has two hot-swap 150 mm x 51 mm fans and two hot-swap 150 mm x 38 mm fans. The two 150 mm x 51 mm fans (fan 1 and fan 2) are located toward the front of the server and are used to cool the memory board and processor board. The two 150 mm x 38 mm fans (fan 3 and fan 4) are located just behind the PCI-X board and are used to cool the power supplies, PCI-X slots, and other components. Each fan has an LED to help you detect a problem. When the fan is operating correctly, this LED is off. If a fan stops working, the Light Path Diagnostics feature will light the system-error LED on the front of the server, indicating that there is a problem, and guide you to the defective fan. When this occurs, first identify the defective fan; then, using the appropriate procedure, remove and replace the fan. Replacing fan 1 or 2 Fans 1 and 2 are located on the right side of the server. These fans are redundant, meaning that if one fails, the remaining fan will temporarily speed up to properly cool the server components. Attention: All fans must be replaced within 48 hours of failing. Complete the following steps to replace fan 1 or 2: 1. Read the safety information beginning on page 197 and "Installation guidelines" on page 77. 2. Place your fingers into the two finger holes on the top of the fan, and squeeze them together; then, lift the fan out of the server. 3. Turn the new fan so that the LED on the top of the fan is to the right side of the server. Chapter 4. Installing options 107

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8.
Carefully
install
the
processor-board
assembly
and
retention
bracket.
9.
Carefully
install
the
memory-board
assembly.
10.
If
you
have
other
options
to
install
or
remove,
do
so
now.
Otherwise,
go
to
“Completing
the
installation”
on
page
111.
Replacing
and
troubleshooting
fans
Your
xSeries
450
server
has
two
hot-swap
150
mm
x
51
mm
fans
and
two
hot-swap
150
mm
x
38
mm
fans.
The
two
150
mm
x
51
mm
fans
(fan
1
and
fan
2)
are
located
toward
the
front
of
the
server
and
are
used
to
cool
the
memory
board
and
processor
board.
The
two
150
mm
x
38
mm
fans
(fan
3
and
fan
4)
are
located
just
behind
the
PCI-X
board
and
are
used
to
cool
the
power
supplies,
PCI-X
slots,
and
other
components.
Each
fan
has
an
LED
to
help
you
detect
a
problem.
When
the
fan
is
operating
correctly,
this
LED
is
off.
If
a
fan
stops
working,
the
Light
Path
Diagnostics
feature
will
light
the
system-error
LED
on
the
front
of
the
server,
indicating
that
there
is
a
problem,
and
guide
you
to
the
defective
fan.
When
this
occurs,
first
identify
the
defective
fan;
then,
using
the
appropriate
procedure,
remove
and
replace
the
fan.
Replacing
fan
1
or
2
Fans
1
and
2
are
located
on
the
right
side
of
the
server.
These
fans
are
redundant,
meaning
that
if
one
fails,
the
remaining
fan
will
temporarily
speed
up
to
properly
cool
the
server
components.
Attention:
All
fans
must
be
replaced
within
48
hours
of
failing.
Complete
the
following
steps
to
replace
fan
1
or
2:
1.
Read
the
safety
information
beginning
on
page
197
and
“Installation
guidelines”
on
page
77.
2.
Place
your
fingers
into
the
two
finger
holes
on
the
top
of
the
fan,
and
squeeze
them
together;
then,
lift
the
fan
out
of
the
server.
3.
Turn
the
new
fan
so
that
the
LED
on
the
top
of
the
fan
is
to
the
right
side
of
the
server.
Chapter
4.
Installing
options
107