3.
Remove
the
old
battery.
4.
Install
a
new
battery.
5.
Reconnect
all
the
cables
to
the
system
board
and
close
the
computer
cover.
See
“Completing
the
parts
replacement”
on
page
30.
Note:
When
the
computer
is
turned
on
for
the
first
time
after
battery
replacement,
an
error
message
might
be
displayed.
This
is
normal
after
replacing
the
battery.
6.
Turn
on
the
computer
and
all
attached
devices.
7.
Use
the
Setup
Utility
program
to
set
the
date,
time,
and
any
passwords.
See
Chapter
4,
“Using
the
Setup
Utility,”
on
page
43.
Replacing
the
heat
sink
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
CAUTION:
The
heat
sink
might
be
very
hot.
Turn
off
the
computer
and
wait
three
to
five
minutes
to
let
the
computer
cool
before
opening
the
computer
cover.
This
section
provides
instructions
on
how
to
replace
the
heat
sink.
To
replace
the
heat
sink:
1.
Open
the
computer
cover.
See
“Opening
the
computer
cover”
on
page
12.
2.
Locate
the
heat
sink.
See
“Locating
components”
on
page
9.
Figure
14.
Removing
the
old
battery
Figure
15.
Installing
a
new
battery
Chapter
2.
Installing
options
and
replacing
hardware
19
Summary of Contents for 6136A1U
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