Lenovo ThinkCentre M51 Hardware Maintenance Manual - Page 149

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Removing and replacing the battery 1. Open the cover. See "Opening the cover" on page 138. 2. Locate the battery on the system board. See "Identifying parts on the system board" on page 140. 3. Remove any parts that impede access to the battery. 4. Remove the old battery. 5. Install the new battery. 6. Install any parts that were removed to gain access to the battery. 7. To complete the installation, go to "Closing the cover and connecting cables" on page 159. Note: When the computer is turned on for the first time after battery replacement, an error message might be displayed. The Setup Utility will start automatically. This is normal after replacing the battery. Removing and replacing the power supply Attention Never remove the cover on a power supply or any part that has the following label attached. Hazardous voltage, current, and energy levels are present inside any component that has this label attached. There are no servicable parts inside these components. 1. Open the cover. See "Opening the cover" on page 138. Chapter 10. Replacing FRUs (Types 8098, 8171, 8172, 8173, 8424, and 8425) 143

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Removing
and
replacing
the
battery
1.
Open
the
cover.
See
“Opening
the
cover”
on
page
138.
2.
Locate
the
battery
on
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
140.
3.
Remove
any
parts
that
impede
access
to
the
battery.
4.
Remove
the
old
battery.
5.
Install
the
new
battery.
6.
Install
any
parts
that
were
removed
to
gain
access
to
the
battery.
7.
To
complete
the
installation,
go
to
“Closing
the
cover
and
connecting
cables”
on
page
159.
Note:
When
the
computer
is
turned
on
for
the
first
time
after
battery
replacement,
an
error
message
might
be
displayed.
The
Setup
Utility
will
start
automatically.
This
is
normal
after
replacing
the
battery.
Removing
and
replacing
the
power
supply
Attention
Never
remove
the
cover
on
a
power
supply
or
any
part
that
has
the
following
label
attached.
Hazardous
voltage,
current,
and
energy
levels
are
present
inside
any
component
that
has
this
label
attached.
There
are
no
servicable
parts
inside
these
components.
1.
Open
the
cover.
See
“Opening
the
cover”
on
page
138.
Chapter
10.
Replacing
FRUs
(Types
8098,
8171,
8172,
8173,
8424,
and
8425)
143