Installing a power supply unit, Installing, Power – Lenovo Secure Managed Client User Manual
Page 20: Supply, Unit, Removing
Installing
a
power
supply
unit
To
install
a
replacement
PSU,
do
the
following:
DANGER
Do
not
remove
the
covers
from
a
PSU.
Danger
of
electric
shock
exists
inside.
Return
the
PSU
to
your
supplier
for
repair.
CAUTION:
This
procedure
should
only
be
performed
by
qualified
service
personnel.
Attention:
v
Before
performing
any
maintenance
on
the
system,
back
up
the
data.
v
Handle
the
PSU
carefully
and
avoid
damaging
the
connector
pins.
Do
not
install
the
PSU
if
any
pins
appear
to
be
bent.
Important:
If
only
one
PSU
is
installed,
a
blanking
plate
must
be
installed
to
cover
the
open
PSU
slot.
Operating
the
enclosure
with
any
modules
missing
will
disrupt
the
airflow
and
the
drives
will
not
receive
sufficient
cooling.
It
is
important
that
all
openings
are
filled
before
operating
the
unit.:
Notes:
1.
Follow
the
instructions
in
the
Secure
Managed
Client
-
Storage
Array
User
Guide
User
Guide
for
turning
off
the
system.
2.
If
only
one
PSU
is
to
be
installed
in
the
storage
system,
it
must
be
installed
in
the
bottom
slot
(Slot
1).
A
blanking
plate
must
be
fitted
to
cover
the
empty
upper
slot
(Slot
2).
1.
Observe
all
safety
and
ESD
precautions
in
the
Safety
and
Warranty
Guide.
Figure
7.
Removing
a
power
supply
unit
12
Secure
Managed
Client
(SMC)
-
Storage
Array
Hardware
Installation
and
Replacement
Guide