Lenovo J105 Hardware Maintenance Manual - Page 98

Replacing, power, supply

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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 left-side cover. See "Removing the covers" on page 82. 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 85. 4. At the rear of the chassis, remove the four screws that secure the power supply. 5. Lift the power supply out of the chassis. 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 85. Make sure the cables are correctly routed. 8. Go to "Completing the FRU replacement." on page 111. 92 Lenovo 3000 J Series

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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
left-side
cover.
See
“Removing
the
covers”
on
page
82.
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
85.
4.
At
the
rear
of
the
chassis,
remove
the
four
screws
that
secure
the
power
supply.
5.
Lift
the
power
supply
out
of
the
chassis.
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
85.
Make
sure
the
cables
are
correctly
routed.
8.
Go
to
“Completing
the
FRU
replacement.”
on
page
111.
92
Lenovo
3000
J
Series