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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.
 
 
This
 
procedure
 
describes
 
how
 
to
 
remove
 
and
 
replace
 
the
 
power
 
supply.
 
 
1.
   
Remove
 
any
 
media
 
(diskettes,
 
CDs,
 
or
 
tapes)
 
from
 
the
 
drives,
 
shut
 
down
 
your
 
operating
 
system,
 
and
 
turn
 
off
 
all
 
attached
 
devices
 
and
 
the
 
computer.
 
 
2.
   
Unplug
 
all
 
power
 
cords
 
from
 
electrical
 
outlets.
 
 
3.
   
Disconnect
 
the
 
cables
 
attached
 
to
 
the
 
computer.
 
This
 
includes
 
power
 
cords,
 
input/output
 
(I/O)
 
cables,
 
and
 
any
 
other
 
cables
 
that
 
are
 
connected
 
to
 
the
 
computer.
 
See
 
and
 
 
4.
   
Remove
 
the
 
four
 
screws
 
at
 
the
 
rear
 
of
 
the
 
chassis
 
that
 
secure
 
the
 
power
 
supply.
 
  
  
 
5.
   
Open
 
the
 
computer
 
cover.
 
See
 
 
94
 
Hardware
 
Maintenance
 
Manual