IBM BladeCenter T Type 8720 User Manual
Page 24
Table
3.
Power
module
LEDs
(continued)
DC
IN
or
AC
IN
DC
OUT
!
(Error)
(amber)
Description
and
action
Off
Off
Off
or
On*
There
is
an
input
power
problem.
Possible
causes:
v
There
is
no
power
to
the
power
module.
Actions:
Make
sure
that:
1.
The
power
is
correctly
connected
to
the
unit.
2.
The
power
is
connected
to
220
v
ac
(8730)
or
–48
v
dc
(8720).
3.
The
power
source
functions
properly.
v
The
power
module
has
failed.
Action:
Replace
the
power
module.
If
the
problem
remains,
have
the
unit
serviced.
*Error
LED
will
operate
only
if
a
redundant
power
supply
is
installed.
On
On
On
There
is
a
fault
condition
in
the
power
supply.
Possible
causes:
v
Thermal
fault.
Action:
Replace
the
power
module.
v
12
v
over-voltage
power
condition
or
12
v
under-voltage
power
condition.
Actions:
Determine
the
cause
of
shutdown
using
diagnostics
and
replace
the
failed
component.
When
the
fault
has
ben
cleared,
reset
the
power
module.
–
Issue
a
power-module
reset
through
the
management
module.
–
Remove
the
power
module
from
the
unit
for
at
least
10
seconds.
14
BladeCenter
T
Type
8720
and
8730:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide