Thumbscrew
Fan door
3.
If
the
server
has
been
installed
in
a
rack,
slide
the
server
out
from
the
rack
enclosure.
See
the
Rack
Installation
Instructions
that
come
with
the
server
for
information
about
removing
the
server
from
the
rack.
4.
Slide
and
lift
the
two
cover-release
latches
on
the
fan
door
on
the
right
side
of
the
top
of
the
server.
5.
Lift
the
fan
door
cover.
6.
Loosen
the
thumbscrew
at
the
back
of
the
server.
7.
Slide
the
server
cover
back
until
the
locking
tabs
release.
8.
Lift
the
server
cover
off
the
server
and
set
the
server
cover
aside.
Attention:
For
proper
cooling
and
airflow,
replace
the
server
cover
before
you
turn
on
the
server.
Removing
air
baffles
There
are
two
air
baffles
inside
the
server.
These
air
baffles
direct
air
to
cool
components
inside
the
server.
You
might
have
to
remove
these
baffles
to
access
certain
components
or
connectors
on
the
system
board
such
as
DIMMs,
IDE
cables,
or
microprocessors.
To
remove
an
air
baffle,
complete
the
following
steps:
1.
Read
the
safety
information
that
begins
on
page
v
and
“Installation
guidelines”
on
page
23.
2.
Turn
off
the
server
and
peripheral
devices
and
disconnect
the
power
cords
and
all
external
cables,
if
necessary;
then,
remove
the
server
cover.
3.
To
remove
the
air
baffle
that
is
closest
to
the
wall
of
the
server,
complete
these
steps:
26
IBM
System
x3550
Type
7978:
User’s
Guide
Summary of Contents for 79788BU
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