Lenovo 9949 Manuel D’Utilisation
Chapter
3.
Installing
options
and
replacing
hardware
Attention
Do
not
open
your
computer
or
attempt
any
repair
before
reading
the
“Important
safety
information”
in
the
Safety
and
Warranty
Guide
that
was
included
with
your
computer.
To
obtain
copies
of
the
Safety
and
Warranty
Guide,
go
to
http://www.lenovo.com/support.
Note:
Use
only
the
parts
provided
by
Lenovo
.
Tools
required
To
install
some
options
in
your
computer,
you
might
need
a
flat-blade
or
Phillips
screwdriver.
Additional
tools
might
be
needed
for
certain
options.
See
the
instructions
that
come
with
the
option.
Installing
external
options
External
speakers,
a
printer,
or
a
scanner
can
be
connected
to
your
computer.
For
some
external
options,
you
must
install
additional
software
in
addition
to
making
the
physical
connection.
When
adding
an
external
option,
see
and
to
identify
the
required
connector,
and
then
use
the
instructions
that
come
with
the
option
to
help
you
make
the
connection
and
install
any
software
or
device
drivers
that
are
required
for
the
option.
Removing
the
cover
Important
Turn
off
your
computer
and
wait
3
to
5
minutes
to
let
the
computer
cool
before
removing
the
computer
cover.
This
section
provides
instructions
on
how
to
remove
the
computer
cover.
1.
Remove
any
media
(diskettes,
CDs,
or
tapes)
from
the
drives,
shut
down
your
operating
system,
and
turn
off
all
attached
devices.
2.
Unplug
all
power
cords
from
electrical
outlets.
3.
Disconnect
all
cables
attached
to
the
computer.
This
includes
power
cords,
input/output
(I/O)
cables,
and
any
other
cables
that
are
connected
to
the
computer.
4.
Remove
any
locking
devices
such
as
a
padlock
that
secure
the
computer
cover.
©
Lenovo
2005,
2008.
Portions
©
IBM
Corp.
2005.
9