Unlatching, Power, Supply – Lenovo Secure Managed Client User Manual
Page 19: Unit
Attention:
v
Before
performing
any
maintenance
on
the
system,
back
up
the
data.
Follow
the
instructions
in
the
Secure
Managed
Client
-
Storage
Array
User
Guide
User
Guide
for
turning
off
the
system.
v
Prior
to
removing
a
PSU
from
the
enclosure
and
to
ensure
the
system
has
warning
of
an
imminent
power
shutdown,
disconnect
power
to
the
PSU
by
either
turning
off
the
main
switch
(where
present)
or
physically
removing
the
power
cord.
v
The
storage
system
must
be
turned
off
if
replacing
a
failed
PSU
in
a
single
non-redundant
power
supply
system.
1.
Observe
all
safety
and
ESD
precautions
in
the
Safety
and
Warranty
Guide.
2.
For
non-redundant
power
supply
systems
only,
turn
off
the
storage
system.
See
the
Secure
Managed
Client
-
Storage
Array
User
Guide
for
instructions
on
turning
off
the
system.
3.
Turn
off
and
disconnect
the
power
supply
bail.
Disconnect
the
power
supply
cord
to
the
faulty
PSU.
4.
Press
the
locking
tab
to
the
left.
5.
Pull
the
handle
to
remove
the
PSU
from
the
mounting
cage.
Figure
6.
Unlatching
a
power
supply
unit
Chapter
3.
Hardware
installations
and
upgrades
11