IBM Type 8720 Manual Do Utilizador
Power
modules
AC in LED
DC out LED
DC in LED
Error LED
AC power module
DC power module
DC out LED
Error LED
Power
module
LEDs:
Each
power
module
has
three
LEDs
to
indicate
the
status
of
the
power
module.
v
AC
(or
DC)
in:
When
continuously
lit,
this
green
LED
indicates
that
the
input
power
source
is
working.
If
the
LED
is
not
lit,
it
indicates
that
the
input
power
source
is
not
present
or
is
incorrect.
v
DC
out:
When
continuously
lit,
this
green
LED
indicates
that
the
output
power
is
present.
If
the
LED
is
not
lit,
it
indicates
that
the
output
power
is
not
present.
v
!
(Error):
When
continuously
lit,
this
amber
LED
indicates
that
there
is
a
error
condition
within
the
power
module.
Table
3.
Power
module
LEDs
DC
IN
or
AC
IN
DC
OUT
!
(Error)
(amber)
Description
and
action
On
On
Off
The
power
module
is
on
and
operating
correctly.
On
Off
Off
or
On*
There
is
an
output
power
problem.
A
system
error
has
shut
down
the
power
module.
Actions:
Determine
the
cause
of
the
shutdown
using
the
diagnostics
and
replace
the
failed
component.
When
the
fault
has
been
cleared,
reset
the
power
module
in
one
of
the
following
ways:
v
Issue
a
power-module
reset
through
the
management
module.
v
Remove
the
power
module
from
the
unit
for
at
least
10
seconds.
If
the
problem
remains,
have
the
unit
serviced.
*Error
LED
will
operate
only
if
a
redundant
power
supply
is
installed.
Chapter
1.
General
information
13