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5
Troubleshooting and Repair
71
CPM replacement procedures
Removing the CPM
The
following
steps
explain
the
hot
‐
swap
procedure
for
replacing
the
CPM:
1. Read
Electrostatic
discharge
on
page 10
and
make
sure
you
are
adequately
grounded
before
handling
any
of
the
modules.
2. Before
replacing
the
CPM,
disconnect
all
cables
from
the
front
panel.
3. Loosen
the
two
thumbscrews
securing
the
CPM.
4. Release
the
module
locking
ejector
latch
that
contains
the
hot
‐
swap
switch.
This
will
be
either
the
right
or
the
bottom
ejector
latch,
depending
on
whether
the
module
is
oriented
vertically
or
horizontally.
To
release
the
locking
ejector
latch,
first
disengage
the
latch
lock
by
sliding
the
lock
toward
the
handle
to
release
the
catch
from
the
shelf
latch
rail,
then
pull
the
handle
out.
Refer
to
the
illustration.
Do
not
release
the
other
latch
at
this
time.
When
the
handle
or
ejector
latch
is
opened,
a
signal
is
sent
to
the
IPMC
which
causes
the
blue
hot
‐
swap
LED
to
begin
blinking.
W
ARNING
!
•
Never
force
open
a
locking
ejector
latch.
The
locking
mechanism
must
be
disengaged
to
release
the
latch
or
damage
to
the
latch
could
occur.
•
Do
not
remove
a
CPM
before
its
hot
‐
swap
LED
turns
solid
blue.
Removing
it
prematurely
can
cause
unpredictable
results
in
other
parts
of
the
system.
5. When
it
is
safe
to
remove
the
module,
the
hot
‐
swap
LED
stops
blinking
and
remains
on.
W
ARNING
!
Be
careful
not
to
touch
any
heatsinks
when
removing
the
CPM
because
they
might
be
hot
to
the
touch.
If
possible,
wait
3
to
5
minutes
after
the
hot
‐
swap
LED
turns
solid
blue
to
give
the
air
flow
in
the
system
time
to
cool
the
board.
To
remove
the
CPM,
release
the
other
locking
ejector
latch
(the
non
‐
hot
swap
latch),
using
the
same
release
process
described
in
step
4
.
Simultaneously
pull
both
ejector
latches
to
disengage
the
module
from
the
backplane
and
remove
it
from
the
chassis.
6. Place
the
CPM
on
a
flat,
static
‐
free
surface.
7.
Important:
If
the
removed
CPM
will
not
be
replaced
with
another
module,
install
an
airflow
management
filler
designed
for
the
slot
to
maintain
proper
cooling
and
airflow
through
the
shelf
for
the
remaining
modules.
Slide lock toward
handle, then pull
handle out
Lock
Locking latch