Lenovo 7721 Manuale Utente
b.
Insert
the
tabs
1
of
the
socket
cover
into
the
hinged
side
of
the
socket,
and
then
press
the
other
side
of
the
socket
cover
downward
until
the
tabs
2
snap
into
position.
12.
Install
the
new
retention
module
on
the
new
system
board.
13.
Install
the
heat
sink
and
fan
assembly
and
connect
the
heat
sink
and
fan
assembly
cable
to
the
microprocessor
fan
connector
on
the
new
system
board.
14.
Install
the
new
system
board
into
the
chassis
and
align
the
screw
holes
with
those
in
the
chassis.
Insert
and
tighten
the
screws
to
secure
the
new
system
board
in
place.
15.
Install
all
memory
modules
and
adapter
cards
removed
from
the
failing
system
board
on
the
new
system
board.
16.
Reinstall
the
primary
hard
disk
drive
with
the
hard
disk
drive
cage.
17.
Reconnect
all
remaining
cables
to
the
system
board.
See
18.
Go
to
Figure
18.
Tabs
on
the
microprocessor
socket
cover
(bottom
view)
Figure
19.
Installing
the
microprocessor
socket
cover
104
Hardware
Maintenance
Manual