Lenovo S200 Hardware Maintenance Manual - Page 135

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Replacing the power supply This procedure describes how to remove and replace the power supply. 1. Remove the computer cover. See "Removing the cover" on page 123. Note: For this procedure, it helps to lay the computer on its side. 2. Disconnect the power supply cables from the system board and from all drives. 3. Remove the four screws that secure the power supply at the rear of the chassis. 4. Lift the power supply out of the chassis. 5. If the power supply has a voltage-selection switch, ensure that it is set to match the voltage available at the electrical outlet. v If the voltage supply range in your local country or region is 100-127 V ac, set the switch to 115 V. v If the voltage supply range in your local country or region is 200-240 V ac, set the switch to 230 V. 6. Install the new power supply into the chassis so that the screw holes in the power supply align with those in the chassis. 7. Install the four screws to secure the power supply. Note: Use only the screws provided by Lenovo. 8. Reconnect the power supply connectors to the system board. See "Locating parts on the system board" on page 125. 9. Reconnect a power supply connector to each of the drives. 10. Go to "Completing the FRU replacement" on page 161. Chapter 9. Replacing FRUs - Tower Computers 129

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Replacing
the
power
supply
This
procedure
describes
how
to
remove
and
replace
the
power
supply.
1.
Remove
the
computer
cover.
See
“Removing
the
cover”
on
page
123.
Note:
For
this
procedure,
it
helps
to
lay
the
computer
on
its
side.
2.
Disconnect
the
power
supply
cables
from
the
system
board
and
from
all
drives.
3.
Remove
the
four
screws
that
secure
the
power
supply
at
the
rear
of
the
chassis.
4.
Lift
the
power
supply
out
of
the
chassis.
5.
If
the
power
supply
has
a
voltage-selection
switch,
ensure
that
it
is
set
to
match
the
voltage
available
at
the
electrical
outlet.
v
If
the
voltage
supply
range
in
your
local
country
or
region
is
100-127
V
ac,
set
the
switch
to
115
V.
v
If
the
voltage
supply
range
in
your
local
country
or
region
is
200-240
V
ac,
set
the
switch
to
230
V.
6.
Install
the
new
power
supply
into
the
chassis
so
that
the
screw
holes
in
the
power
supply
align
with
those
in
the
chassis.
7.
Install
the
four
screws
to
secure
the
power
supply.
Note:
Use
only
the
screws
provided
by
Lenovo.
8.
Reconnect
the
power
supply
connectors
to
the
system
board.
See
“Locating
parts
on
the
system
board”
on
page
125.
9.
Reconnect
a
power
supply
connector
to
each
of
the
drives.
10.
Go
to
“Completing
the
FRU
replacement”
on
page
161.
Chapter
9.
Replacing
FRUs
-
Tower
Computers
129