b.
Hold
the
latch
open,
and
slide
the
fan
all
the
way
into
the
slot.
If
the
fan
does
not
go
into
the
bay,
rotate
it
180°.
Ensure
that
the
latch
is
on
the
side
closest
to
the
center
of
the
storage
server.
c.
Release
the
latch.
If
the
lever
remains
open,
pull
back
on
the
fan
slightly,
and
then
push
it
in
again
until
the
latch
snaps
into
place.
4.
Check
the
LEDs.
The
Fault
LEDs
turn
off
after
a
few
seconds.
If
they
remain
on,
see
Working
with
hot-swap
power
supplies
The
storage
server
power
system
consists
of
two
power
supply
CRUs.
The
power
supply
CRUs
provide
power
to
the
internal
components
by
converting
incoming
ac
voltage
to
dc
voltage.
One
power
supply
CRU
can
maintain
electrical
power
to
the
unit
if
the
other
power
supply
is
turned
off
or
malfunctions.
The
power
supply
CRUs
are
interchangeable
(by
reversing
the
locking
levers).
Each
power
supply
CRU
has
a
built-in
sensor
that
detects
the
following
conditions:
v
Over-voltage
v
Over-current
v
Overheated
power
supply
If
any
of
these
conditions
occurs,
one
or
both
power
supplies
will
shut
down.
All
power
remains
off
until
you
cycle
the
power
switches
(turn
the
power
switches
off,
wait
at
least
30
seconds,
then
turn
the
power
switches
on).
For
more
information,
see
and
The
power
supplies
are
customer
replaceable
units
(CRUs)
and
do
not
require
preventive
maintenance.
v
Always
keep
the
power
supplies
in
their
proper
places
to
maintain
proper
controller-unit
cooling.
v
Use
only
the
supported
power
supplies
for
your
specific
storage
server.
The
power-supply
controls
on
the
rear
of
the
storage
server
are
shown
in
AC power
switch
AC power
switch
Power LED
Power LED
Fault LED
Fault LED
Lever
Lever
AC power
connector
AC power
connector
Hot-swap power
supplies
Strain-
relief clamp
Strain-
relief clamp
f10ug023
Figure
59.
Power
supply
controls
Chapter
5.
Installing
and
replacing
components
79
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