Lenovo ThinkCentre M50e Hardware Maintenance Manual - Page 133

Removing, replacing, battery, power, supply

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Removing and replacing the battery 1. Remove the cover. See "Removing the cover" on page 121. 2. Locate the battery. See "Identifying parts on the system board" on page 124. 3. If necessary, remove any adapters that impede access to the battery. See "Removing and replacing a PCI adapter" on page 125 for more information. 4. Remove the old battery. 5. Install the new battery. 6. Replace any adapters that were removed to gain access to the battery. 7. Go to "Closing the cover and connecting cables" on page 133 Note: Use the Setup Utility program to set the date and time and any passwords. See Chapter 6, "Using the Setup Utility," on page 55. 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 121. 2. Disconnect all power supply cables from the drives. 3. Disconnect all power supply cables from the system board. See "Identifying parts on the system board" on page 124. 4. Support the power supply and remove the four screws that hold the power supply in place. 5. Remove the power supply. Chapter 10. Replacing FRUs (Types 8084, 8085, 8147, 8148, and 8179 127

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Removing
and
replacing
the
battery
1.
Remove
the
cover.
See
“Removing
the
cover”
on
page
121.
2.
Locate
the
battery.
See
“Identifying
parts
on
the
system
board”
on
page
124.
3.
If
necessary,
remove
any
adapters
that
impede
access
to
the
battery.
See
“Removing
and
replacing
a
PCI
adapter”
on
page
125
for
more
information.
4.
Remove
the
old
battery.
5.
Install
the
new
battery.
6.
Replace
any
adapters
that
were
removed
to
gain
access
to
the
battery.
7.
Go
to
“Closing
the
cover
and
connecting
cables”
on
page
133
Note:
Use
the
Setup
Utility
program
to
set
the
date
and
time
and
any
passwords.
See
Chapter
6,
“Using
the
Setup
Utility,”
on
page
55.
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
121.
2.
Disconnect
all
power
supply
cables
from
the
drives.
3.
Disconnect
all
power
supply
cables
from
the
system
board.
See
“Identifying
parts
on
the
system
board”
on
page
124.
4.
Support
the
power
supply
and
remove
the
four
screws
that
hold
the
power
supply
in
place.
5.
Remove
the
power
supply.
Chapter
10.
Replacing
FRUs
(Types
8084,
8085,
8147,
8148,
and
8179
127