Power-supply
LEDs
The
following
minimum
configuration
is
required
for
the
DC
LED
on
the
power
supply
to
be
lit:
v
Power
supply
v
Power
backplane
v
Power
cord
v
Microprocessor
tray
The
following
minimum
configuration
is
required
for
the
server
to
start:
v
One
microprocessor
v
Two
1
GB
DIMMs
on
the
memory
card
v
One
power
supply
v
Power
backplane
v
Power
cord
v
I/O
board
v
PCI-X
board
assembly
The
following
illustration
shows
the
locations
of
the
power-supply
LEDs.
AC
DC
Power supply 1 (PS1)
DC power
LED (green)
AC power
LED (green)
AC
DC
The
following
table
describes
the
problems
that
are
indicated
by
various
combinations
of
the
power-supply
LEDs
and
the
power-on
LED
on
the
operator
information
panel
and
suggested
actions
to
correct
the
detected
problems.
58
IBM
System
x3950
Type
8878
and
System
x3950
E
Type
8879:
Problem
Determination
and
Service
Guide
