Lenovo 7244 Manuel D’Utilisation
Replacing
the
system
board
Attention
Do
not
open
your
computer
or
attempt
any
repair
before
reading
and
understanding
the
“Important
safety
information”
in
the
ThinkCentre
Safety
and
Warranty
Guide
that
came
with
your
computer.
To
obtain
a
copy
of
the
ThinkCentre
Safety
and
Warranty
Guide,
go
to:
http://www.lenovo.com/support
This
section
provides
instructions
on
how
to
replace
the
system
board.
CAUTION:
The
heat
sink
and
microprocessor
might
be
very
hot.
Turn
off
the
computer
and
wait
three
to
five
minutes
to
let
the
computer
cool
before
removing
the
computer
cover.
Note:
When
replacing
the
system
board,
you
must
also
order
a
new
retention
module
for
the
new
system
board.
Make
sure
you
have
a
retention
module
for
the
new
system
board
before
continuing
this
procedure.
To
replace
the
system
board:
1.
Remove
the
computer
cover.
See
2.
Place
the
computer
on
the
right
side
to
make
the
system
board
more
accessible.
3.
Remove
any
adapter
cards
installed.
See
4.
Disconnect
the
signal
and
power
cables
from
the
hard
disk
drive.
Chapter
8.
Replacing
FRUs
-
Tower
computers
99