Lenovo ThinkCentre M51 Hardware Maintenance Manual - Page 127

Removing, replacing, battery, power, supply

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Removing and replacing the battery 1. Open the cover. See "Removing the cover" on page 116. 2. Refer to "Identifying parts on the system board" on page 118 and locate the battery. 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. Replace the cover, and connect the cables. See "Replacing the cover and connecting the cables" on page 135. 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. Remove the cover. See "Removing the cover" on page 116. Chapter 9. Replacing FRUs (Types 8143, 8144, 8146, 8422, 8423, and 8427) 121

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Removing
and
replacing
the
battery
1.
Open
the
cover.
See
“Removing
the
cover”
on
page
116.
2.
Refer
to
“Identifying
parts
on
the
system
board”
on
page
118
and
locate
the
battery.
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.
Replace
the
cover,
and
connect
the
cables.
See
“Replacing
the
cover
and
connecting
the
cables”
on
page
135.
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.
Remove
the
cover.
See
“Removing
the
cover”
on
page
116.
Chapter
9.
Replacing
FRUs
(Types
8143,
8144,
8146,
8422,
8423,
and
8427)
121