IBM 7979B1U User Manual - Page 47

Removing, cover

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Removing the cover The following illustration shows how to remove the cover. Cover-release latch Important: Before you install optional hardware, make sure that the server is working correctly. Start the server, and make sure that the operating system starts, if an operating system is installed, or that a 19990305 error code is displayed, indicating that an operating system was not found but the server is otherwise working correctly. If the server is not working correctly, see the Problem Determination and Service Guide for diagnostic information. To remove the cover, complete the following steps: 1. Read the safety information that begins on page vii and "Installation guidelines" on page 28. 2. If you are planning to install or remove a microprocessor, memory module, PCI adapter, battery, or other non-hot-swap optional device, turn off the server and all attached devices and disconnect all external cables and power cords (see "Turning off the server" on page 13). Attention: In a dc power environment, only trained service personnel other than IBM service technicians are authorized to connect or disconnect power to the dc power supply. See the documentation that comes with each dc power supply. 3. Press down on the left and right side latches and pull the server out of the rack enclosure until both slide rails lock. Note: You can reach the cables on the back of the server when the server is in the locked position. 4. Lift the cover-release latch. Lift the cover off the server and set the cover aside. Attention: For proper cooling and airflow, replace the cover before you turn on the server. Operating the server for extended periods of time (over 30 minutes) with the cover removed might damage server components. Chapter 2. Installing optional devices 31

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Removing
the
cover
The
following
illustration
shows
how
to
remove
the
cover.
Cover-release
latch
Important:
Before
you
install
optional
hardware,
make
sure
that
the
server
is
working
correctly.
Start
the
server,
and
make
sure
that
the
operating
system
starts,
if
an
operating
system
is
installed,
or
that
a
19990305
error
code
is
displayed,
indicating
that
an
operating
system
was
not
found
but
the
server
is
otherwise
working
correctly.
If
the
server
is
not
working
correctly,
see
the
Problem
Determination
and
Service
Guide
for
diagnostic
information.
To
remove
the
cover,
complete
the
following
steps:
1.
Read
the
safety
information
that
begins
on
page
vii
and
“Installation
guidelines”
on
page
28.
2.
If
you
are
planning
to
install
or
remove
a
microprocessor,
memory
module,
PCI
adapter,
battery,
or
other
non-hot-swap
optional
device,
turn
off
the
server
and
all
attached
devices
and
disconnect
all
external
cables
and
power
cords
(see
“Turning
off
the
server”
on
page
13).
Attention:
In
a
dc
power
environment,
only
trained
service
personnel
other
than
IBM
service
technicians
are
authorized
to
connect
or
disconnect
power
to
the
dc
power
supply.
See
the
documentation
that
comes
with
each
dc
power
supply.
3.
Press
down
on
the
left
and
right
side
latches
and
pull
the
server
out
of
the
rack
enclosure
until
both
slide
rails
lock.
Note:
You
can
reach
the
cables
on
the
back
of
the
server
when
the
server
is
in
the
locked
position.
4.
Lift
the
cover-release
latch.
Lift
the
cover
off
the
server
and
set
the
cover
aside.
Attention:
For
proper
cooling
and
airflow,
replace
the
cover
before
you
turn
on
the
server.
Operating
the
server
for
extended
periods
of
time
(over
30
minutes)
with
the
cover
removed
might
damage
server
components.
Chapter
2.
Installing
optional
devices
31