4.
Attach
the
power-supply
nut
and
tighten
it
securely.
5.
Connect
the
power
cable
to
the
power
supply
ac
connector.
6.
Plug
the
supply
power
cable
into
a
properly
grounded
electrical
outlet.
7.
Turn
the
power
supply
switch
to
the
on
position.
Replacing
a
failed
hot-swap
cooling
fan
Attention:
Do
not
run
the
storage
expansion
enclosure
without
adequate
ventilation
and
cooling.
Improper
ventilation
might
cause
damage
to
the
internal
components
and
circuitry.
The
fans
are
interchangeable
and
replaceable
and
do
not
require
preventive
maintenance.
The
fans
help
maintain
proper
air
circulation
across
the
components
inside
the
storage
expansion
enclosure.
Air
flows
through
the
storage
expansion
enclosure
from
the
front
to
the
back.
You
can
hot-swap
the
fans
(replace
them
while
the
storage
expansion
enclosure
is
turned
on
and
running),
provided
that
you
complete
the
exchange
within
10
minutes.
This
time
limit
applies
only
to
the
total
time
that
a
fan
is
out
of
the
storage
expansion
enclosure,
beginning
when
you
remove
the
failed
unit
and
ending
when
you
reseat
the
new
one.
This
does
not
include
the
time
it
takes
you
to
perform
this
entire
procedure
(checking
LEDs,
unpacking
the
new
fan,
and
so
on).
For
any
period
of
time
exceeding
ten
minutes,
both
fan
units
must
always
be
in
place,
even
if
one
is
not
functioning
properly.
This
is
necessary
to
maintain
proper
cooling.
Complete
the
following
steps
to
replace
a
hot-swap
fan:
1.
Check
the
LEDs
on
the
back
of
the
storage
expansion
enclosure.
2.
If
the
fan
amber
Fault
LED
is
lit,
remove
the
failed
fan:
a.
Unlock
the
fan
latch
by
moving
the
latch
towards
the
exterior
of
the
storage
expansion
enclosure
(away
from
the
power
supply
and
ESM
CRUs)
and
hold
it
in
the
open
position.
b.
Use
the
handle
(black
knob)
to
pull
the
fan
from
the
fan
bay
as
shown
in
1 Gb/s
2 Gb/s
X10
X1
Tray Number
Conflict
Strain relief clamps
AC power connectors
AC power switches
e
xp70007
Figure
57.
Connecting
the
power
supply
74
IBM
TotalStorage
DS4000
EXP700
and
EXP710
Storage
Expansion
Enclosures:
Installation,
User’s,
and
Maintenance
Guide
Summary of Contents for TotalStorage DS4000 EXP710
Page 2: ......
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