Procedure
Complete
the
following
steps
to
remove
and
replace
a
power
supply.
1.
To
leave
the
router
in
service
while
you
replace
a
power
supply,
verify
that
the
other
power
supply
(the
one
not
being
replaced)
has
been
powered
on
for
at
least
four
seconds
and
has
a
green
LED.
2.
Power
off
the
power
supply
being
replaced
by
pressing
the
AC
power
switch
to
"
O
".
3.
Unplug
the
power
cord
from
the
power
supply
that
you
are
replacing.
4.
Unscrew
the
captive
screw
(
3
in
Figure
11),
using
a
Phillips
screwdriver.
1
Router
chassis
4
Handle
2
Power
supply
5
Nonport
side
of
router
3
Captive
screw
5.
Remove
the
power
supply
from
the
chassis
by
pulling
the
handle
(
4
)
on
the
power
supply
out,
away
from
the
chassis.
6.
Install
the
new
power
supply
in
the
chassis:
Attention:
Do
not
force
the
installation.
If
the
power
supply
does
not
slide
in
easily,
ensure
that
it
is
correctly
oriented
before
continuing.
a.
Verify
that
the
AC
switch
on
the
new
power
supply
is
in
the
"
O
"
(off)
position.
b.
Orient
the
power
supply
as
shown
in
2
of
Figure
11,
with
the
ac
power
receptacle
and
ac
switch
on
the
left.
c.
Using
the
handle,
gently
push
the
power
supply
into
the
chassis
until
it
is
firmly
seated.
d.
Tighten
the
captive
screw.
Scale: 1/4" = 1"
2
5
4
1
3
b1800006
Figure
11.
Removing
and
replacing
a
power
supply
Chapter
4.
Removing
and
replacing
CRUs
41
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