Lenovo a57 9702 Manual Suplementar
Replacing
the
system
board
This
procedure
describes
how
to
remove
and
replace
the
system
board.
The
procedure
varies
depending
upon
the
machine
type.
Important
The
heat
sink
and
microprocessor
might
be
very
hot.
Make
sure
these
components
are
cool
enough
to
safely
handle
before
continuing
this
procedure.
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
with
this
procedure.
1.
Remove
the
cover.
See
2.
Place
the
computer
on
its
right
side
to
help
make
the
system
board
more
accessible.
3.
Remove
any
adapter
cards
installed
in
the
PCI
connectors.
4.
Disconnect
the
signal
and
power
cables
from
the
hard
disk
drive.
5.
Press
the
release
tab
1
down,
slide
the
hard
drive
cage
2
back,
and
pivot
the
hard
disk
drive
outward
as
shown.
6.
Carefully
take
note
of
the
location
of
all
cable
connections
on
the
system
board
and
disconnect
all
cables.
See
the
system
board
illustration
for
your
machine
type
at
7.
Remove
the
screws
that
secure
the
system
board
to
the
chassis.
8.
Lift
the
system
board
out
of
the
chassis.
9.
Remove
the
memory
modules
from
the
failing
system
board
and
install
them
in
the
same
location
on
the
new
system
board.
10.
Disconnect
the
heat
sink
and
fan
assembly
cable
from
the
system
board.
See
the
system
board
illustration
for
your
machine
type
at
120
Hardware
Maintenance
Manual