Lenovo RD120 User Manual
Page 81
Attention:
In
a
dc
power
environment,
only
trained
service
personnel
other
than
Lenovo
service
technicians
are
authorized
to
connect
or
disconnect
power
to
the
dc
power
supply
and
to
install
and
remove
a
dc
power
supply.
See
the
documentation
that
comes
with
each
dc
power
supply
for
installation
instructions.
1.
Read
the
safety
information
that
begins
on
page
and
2.
Remove
the
power-supply
filler
panel
from
the
empty
power-supply
bay
by
pinching
the
side
clip
and
pulling
the
power-supply
filler
panel
from
the
bay.
Save
the
power-supply
filler
panel
in
case
you
remove
the
power
supply
at
a
later
time.
Important:
During
normal
operation,
each
power-supply
bay
must
contain
either
a
power
supply
or
power-supply
filler
panel
for
proper
cooling.
3.
Slide
the
ac
power
supply
into
the
bay
until
the
retention
latch
clicks
into
place.
4.
Remove
the
server
cover
and
install
the
five
cooling
fans
that
came
with
the
power-supply
(see
Important:
When
power
supply
1
is
installed,
the
five
fans
for
power
supply
1
occupy
the
rear
row
only
(fans
3,
4,
8,
9,
and
10);
when
both
power
supplies
are
installed,
all
10
fans
must
be
installed.
See
the
fan
numbers
on
the
microprocessor
air
baffle,
or
see
the
illustration
in
5.
Connect
the
power
cord
for
the
new
ac
power
supply
to
the
power-cord
connector
on
the
power
supply.
The
following
illustration
shows
the
ac
power-supply
connectors
on
the
back
of
the
server.
1
Power
cord
connectors
2
Power
supply
2
3
Power
supply
1
6.
Route
the
power
cord
through
the
power-supply
handle
and
through
any
cable
clamps
on
the
rear
of
the
server
to
prevent
the
power
cord
from
being
accidentally
pulled
out
when
you
slide
the
server
in
and
out
of
the
rack.
7.
Connect
the
power
cord
to
a
properly
grounded
electrical
outlet.
8.
Make
sure
that
the
dc
power
LED
and
ac
power
LED
on
the
power
supply
are
lit,
indicating
that
the
power
supply
is
operating
correctly.
If
you
have
other
optional
devices
to
install
or
remove,
do
so
now.
Otherwise,
go
to
Chapter
2.
Installing
optional
devices
67