Replacing the heat sink and fan assembly, Replacing, Heat – Lenovo ThinkCentre M55e User Manual
Page 22: Sink, Assembly
5.
Slide
the
optical
drive
being
replaced
out
the
front
of
the
drive
bay
assembly.
6.
Remove
the
retainer
bracket
from
the
failing
drive
and
install
it
on
the
new
drive.
7.
Install
the
new
optical
drive
into
the
bay
until
it
snaps
into
position.
8.
Align
the
drive
bay
assembly
with
the
two
slots
and
rails
on
the
sides
of
the
chassis,
reconnect
the
drive
cables
on
the
system
board,
and
then
slide
the
drive
bay
assembly
towards
the
rear
of
the
chassis
until
it
snaps
into
position.
9.
Reinstall
the
front
bezel.
10.
Go
to
Replacing
the
heat
sink
and
fan
assembly
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
for
the
computer.
To
obtain
copies
of
the
Safety
and
Warranty
Guide,
go
to
http://www.lenovo.com/support.
This
section
provides
instructions
on
how
to
replace
the
heat
sink
and
fan
assembly.
1.
Remove
the
computer
cover.
See
2.
Disconnect
the
microprocessor
fan
cable
from
the
system
board.
See
14
Hardware
Replacement
Guide