Chapter
3.
Removal
and
Replacement
Procedures
This
chapter
describes
the
procedures
to
follow
when
removing
and
replacing
the
7212
Storage
Enclosure
field
replaceable
units
(FRUs).
DANGER
To
prevent
a
possible
electrical
shock
from
touching
two
surfaces
with
different
electrical
grounds,
use
one
hand,
when
possible,
to
connect
or
disconnect
signal
cables.
(RSFTD004)
DANGER
To
prevent
a
possible
electrical
shock
when
adding
or
removing
any
devices
to
or
from
the
system,
ensure
that
the
power
cords
for
those
devices
are
unplugged
before
the
signal
cables
are
connected
or
disconnected.
If
possible,
disconnect
all
power
cords
from
the
existing
system
before
you
add
or
remove
a
device.
(RSFTD203)
Attention:
The
7212
Storage
Enclosure
is
a
precision
device
that
requires
reasonable
care
in
handling
to
prevent
data
loss
or
permanent
damage
to
the
device.
Avoid
bumping
or
dropping
the
7212
Storage
Enclosure
or
device
features.
Ensure
all
media
is
removed
from
the
device
before
the
drive
is
moved.
Handling
Static-Sensitive
Devices
Attention:
Electronic
assemblies
are
sensitive
to
static
electricity
discharge.
When
handling
an
electronic
component,
wrap
it
an
antistatic
bag
to
prevent
damage.
Take
the
following
precautions:
v
Do
not
remove
the
electronic
component
from
the
antistatic
bag
until
you
are
ready
to
install
it.
v
With
the
component
still
in
its
antistatic
bag,
touch
it
to
the
metal
frame
of
an
electrically
grounded
surface.
v
Hold
the
component
by
the
frame.
Avoid
touching
the
solder
joints
or
pins.
v
Handle
the
component
carefully
to
prevent
permanent
damage.
Safety
Considerations
When
the
7212
Storage
Enclosure
is
installed
in
a
rack
system,
special
care
should
be
taken
to
ensure
a
safe
work
environment
is
maintained.
The
following
information
should
be
considered
when
working
with
a
rack-installed
enclosure:
Consideration
should
be
given
to
the
connection
of
the
equipment
to
the
supply
circuit,
so
that
overloading
of
circuits
does
not
compromise
the
rack
supply
wiring
or
over-current
protection.
To
provide
the
correct
power
connection
to
the
rack,
refer
to
the
rating
labels
located
on
the
equipment
installed
the
rack
to
determine
the
total
power
requirement
for
the
supply
circuit.
Do
not
install
this
unit
in
a
rack
where
the
internal
rack
ambient
temperatures
will
exceed
40
degrees
Celsius.
©
Copyright
IBM
Corp.
2001,
2004
27
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