IBM 8835 Hardware Maintenance Manual - Page 55

Replacing, assembly

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Replacing a fan assembly The server comes with five replaceable fans. Complete the following steps to replace the fan assembly. Use this procedure to replace any fan in the server. 1. Read "Safety information" on page 101 and "Installation guidelines" on page 25. 2. Turn off the server and all attached peripheral devices. Disconnect all power cords; then, disconnect all external signal cables from the server. 3. Remove the server from the rack; then, remove the server cover (see "Removing the cover and bezel" on page 27). Attention: When you handle static-sensitive devices, take precautions to avoid damage from static electricity. For information about handling these devices, see "Handling static-sensitive devices" on page 25. 4. Determine which fan to replace by checking the LED at each fan; a lit LED indicates the fan to replace. Note: For more information about the LEDs, see "Error LEDs" on page 20. 5. Remove the fan from the server: a. Disconnect the fan cable from the system board. b. Lift the fan out of the server, noting its orientation in the server. Fan 5 Fan 4 Fan 3 Fan 2 6. Position the replacement fan correctly: a. The airflow arrow on the side of the fan must point toward the rear of the server. b. Fans 2, 4 and 5 are positioned so that the fan cable exits from the fan near the top of the server. c. Fan 3 is positioned so that the fan cable exits from the fan near the floor of the server (a 180 degree difference from Fans 2, 4 and 5). Chapter 4. Installing options 45

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Replacing
a
fan
assembly
The
server
comes
with
five
replaceable
fans.
Complete
the
following
steps
to
replace
the
fan
assembly.
Use
this
procedure
to
replace
any
fan
in
the
server.
1.
Read
“Safety
information”
on
page
101
and
“Installation
guidelines”
on
page
25.
2.
Turn
off
the
server
and
all
attached
peripheral
devices.
Disconnect
all
power
cords;
then,
disconnect
all
external
signal
cables
from
the
server.
3.
Remove
the
server
from
the
rack;
then,
remove
the
server
cover
(see
“Removing
the
cover
and
bezel”
on
page
27).
Attention:
When
you
handle
static-sensitive
devices,
take
precautions
to
avoid
damage
from
static
electricity.
For
information
about
handling
these
devices,
see
“Handling
static-sensitive
devices”
on
page
25.
4.
Determine
which
fan
to
replace
by
checking
the
LED
at
each
fan;
a
lit
LED
indicates
the
fan
to
replace.
Note:
For
more
information
about
the
LEDs,
see
“Error
LEDs”
on
page
20.
5.
Remove
the
fan
from
the
server:
a.
Disconnect
the
fan
cable
from
the
system
board.
b.
Lift
the
fan
out
of
the
server,
noting
its
orientation
in
the
server.
Fan 5
Fan 4
Fan 3
Fan 2
6.
Position
the
replacement
fan
correctly:
a.
The
airflow
arrow
on
the
side
of
the
fan
must
point
toward
the
rear
of
the
server.
b.
Fans
2,
4
and
5
are
positioned
so
that
the
fan
cable
exits
from
the
fan
near
the
top
of
the
server.
c.
Fan
3
is
positioned
so
that
the
fan
cable
exits
from
the
fan
near
the
floor
of
the
server
(a
180
degree
difference
from
Fans
2,
4
and
5).
Chapter
4.
Installing
options
45