Lenovo ThinkCentre M50e Hardware Maintenance Manual - Page 104

Removing, replacing, power, supply

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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 92. 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 95. 4. Support the power supply and remove the four screws that hold the power supply in place. 5. Remove the power supply. 6. Install the new power supply and insert the four screws that hold the power supply in place. 7. Reconnect all power supply cables to the system board and the drives. See "Identifying parts on the system board" on page 95. 8. Go to "Closing the cover and connecting cables" on page 104. 98 Hardware Maintenance Manual

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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
92.
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
95.
4.
Support
the
power
supply
and
remove
the
four
screws
that
hold
the
power
supply
in
place.
5.
Remove
the
power
supply.
6.
Install
the
new
power
supply
and
insert
the
four
screws
that
hold
the
power
supply
in
place.
7.
Reconnect
all
power
supply
cables
to
the
system
board
and
the
drives.
See
“Identifying
parts
on
the
system
board”
on
page
95.
8.
Go
to
“Closing
the
cover
and
connecting
cables”
on
page
104.
98
Hardware
Maintenance
Manual