IBM BladeCenter T Type 8720 User Manual
Page 26
KVM
(keyboard,
video,
mouse)
module
indicators
and
input/output
connectors
The
KVM
module
is
a
hot-swap
module
that
is
installed
on
the
rear
of
the
BladeCenter
T
unit
and
is
held
in
place
by
captive
thumbscrews.
This
module
contains
two
PS/2
connectors
for
the
keyboard
and
mouse,
a
system-status
panel,
and
an
HD-15
video
connector.
CRT
MJR
MNR
Thumbscrew
Keyboard
Mouse
Major (MJR) alarm LED
Minor (MNR) alarm LED
Video
Critical (CRT) alarm LED
Location LED
Power LED
System-status
LEDs:
These
LEDs
provide
status
information
for
the
BladeCenter
T
unit.
v
Power:
When
continuously
lit,
this
green
LED
indicates
the
presence
of
power
in
the
BladeCenter
T
unit.
The
LED
turns
off
when
the
power
source
is
interrupted.
Attention:
If
the
power
LED
is
off,
it
does
not
mean
electrical
power
is
not
present
in
the
BladeCenter
T
unit.
The
LED
might
be
burned
out.
To
remove
all
electrical
power
from
the
BladeCenter
T
unit,
you
must
disconnect
all
power
cords
from
the
rear
of
the
BladeCenter
T
unit.
v
Location:
This
blue
LED
is
for
system
identification.
A
system
administrator
or
servicer
uses
this
LED
to
locate
a
specific
BladeCenter
T
unit
for
service
or
repair.
You
can
turn
off
the
location
LED
through
the
Web
interface
or
a
remote
management
console.
Alarm
LEDs:
These
LEDs
provide
alarm
notifications
for
the
BladeCenter
T
unit.
v
CRT
(Critical
alarm,
amber
(default)
or
red):
When
continuously
lit,
this
LED
indicates
the
presence
of
a
critical
system
fault.
The
system
comes
with
amber
as
the
default.
See
the
BladeCenter
T
Management
Module
User’s
Guide
for
information
on
setting
the
color
of
this
LED.
A
critical
system
fault
is
an
error
or
event
that
is
unrecoverable.
In
this
case,
the
system
cannot
continue
to
operate.
An
example
is
the
loss
of
a
large
section
of
memory
that
causes
the
system
to
be
incapable
of
operating.
v
MJR
(Major
alarm,
amber
(default)
or
red):
When
continuously
lit,
this
LED
indicates
the
presence
of
a
major
system
fault.
The
system
comes
with
amber
as
the
default.
See
the
BladeCenter
T
Management
Module
User’s
Guide
for
information
on
setting
the
color
of
this
LED.
A
major
system
fault
is
an
error
or
event
that
has
a
discernible
impact
to
system
operation.
In
this
case,
the
system
can
continue
to
operate
but
with
reduced
performance.
An
example
is
the
loss
of
one
of
two
mirrored
disks.
v
MNR
(Minor
alarm,
amber):
When
continuously
lit,
this
LED
indicates
the
presence
of
a
minor
system
fault.
A
minor
system
fault
is
an
error
or
event
that
has
little
impact
to
system
operation.
An
example
is
a
correctable
ECC
error.
16
BladeCenter
T
Type
8720
and
8730:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide