Lenovo ThinkCentre M55e User Manual
Page 21
15.
Lower
the
microprocessor
straight
down
into
the
microprocessor
socket.
16.
Lower
the
microprocessor
retainer
2
and
then
lower
the
lever
1
to
secure
the
retainer.
Make
sure
the
lever
is
securely
locked
into
position.
Note:
There
will
be
a
black
plastic
cover
on
the
microprocessor
retainer
to
protect
the
socket
on
the
new
system
board.
When
you
lock
the
microprocessor
in
position,
remove
the
black
plastic
cover.
Place
the
black
plastic
cover
on
the
microprocessor
retainer
of
the
failing
system
board.
17.
Place
the
heat
sink
into
position
and
lower
the
lever
to
secure
the
heat
sink.
18.
To
install
the
new
system
board
into
the
chassis,
tilt
the
front
end
of
the
system
board
between
the
diskette
drive
and
the
fan
assembly,
and
position
it
so
that
the
slots
in
the
new
system
board
are
aligned
with
the
pins
on
the
chassis.
Chapter
2.
Replacing
hardware
13