Attention:
The
left
and
right
power
supply
and
fan
units
are
seated
in
the
DS4200
Express
chassis
in
opposite
orientations.
If
you
cannot
fully
insert
the
power
supply
and
fan
unit
into
the
power
supply
and
fan
unit
bay,
flip
it
180°
and
reinsert
it.
Make
sure
that
the
levers
lock
into
place
in
the
storage
subsystem
chassis.
Do
not
force
fit.
The
power
supply
and
fan
unit
is
designed
to
prevent
it
from
being
inserted
into
the
chassis
incorrectly.
13.
Plug
in
the
power
cord
and
turn
on
the
power.
14.
Check
the
Power
and
Fault
LEDs
on
the
new
unit.
15.
Based
on
the
status
of
the
Power
and
Fault
LEDs,
choose
one
of
the
following
steps:
v
Fault
LED
is
on
and
AC
and
DC
power
LED
are
off
-
The
new
unit
might
be
installed
incorrectly.
The
power
supply
and
fan
unit
switch
may
not
be
turned
on.
The
power
cord
plug
may
not
be
fully
inserted
into
the
power
outlet
or
the
power
supply
and
fan
unit
AC
socket.
There
is
not
any
power
to
the
outlet
that
the
power
supply
and
fan
unit
is
connected
to.
The
power
cord
may
be
faulty.
Go
to
step
v
Fault
and
AC
power
LED
is
on
but
the
DC
power
LED
is
off
-
The
power
supply
and
fan
unit
is
faulty.
Turn
the
power
supply
and
fan
unit
power
switch
to
off
and
contact
IBM
Customer
and
Technical
Support
for
another
power
supply
and
fan
unit.
v
AC
and
DC
Power
LED
is
on
and
Fault
LED
is
off
-
Go
to
step
16.
Perform
the
following
task
or
task(s)
to
resolve
the
problem:
v
Ensure
that
the
power
switch
is
turned
to
the
on
position.
v
Ensure
that
there
is
power
at
the
AC
outlet
and
no
circuit
breaker
has
tripped.
v
Ensure
that
the
power
cord
is
working
and
fully
seated
into
the
electrical
outlet
and
the
power
supply
and
fan
unit
AC
socket.
v
Reinstall
the
power
supply
and
fan
unit.
If
the
above
tasks
do
not
resolve
the
problem,
contact
IBM
Customer
and
Technical
Support
17.
Complete
any
remaining
Recovery
Guru
procedures,
if
needed.
18.
Check
the
status
of
each
component
in
the
storage
subsystem.
19.
Do
any
components
have
a
Needs
Attention
LED?
Lever
Ds470011
Figure
77.
Replacing
a
power
supply
and
fan
unit
Chapter
5.
Replacing
components
127
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