Replacing the power supply, Replacing, Power – Lenovo ThinkCentre A57e User Manual
Page 29: Supply, Installing, Battery
4.
Install
a
new
battery.
5.
Replace
the
computer
cover,
and
connect
the
cables.
See
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
and
time
and
any
passwords.
See
“Using
the
Setup
Utility”
in
the
ThinkCentre
User
Guide.
Replacing
the
power
supply
Attention
Do
not
open
your
computer
or
attempt
any
repair
before
reading
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
This
section
provides
instructions
on
how
to
replace
the
power
supply.
1.
Remove
the
computer
cover.
See
2.
Disconnect
the
power
supply
cables
from
the
system
board
and
from
all
drives.
See
Figure
15.
Installing
a
new
battery
Chapter
3.
Installing
options
and
replacing
hardware
21