Power Supply Leds - IBM s-series Installation And User Manual

The latching mechanism on the front of the replacement power supplies differ from
the latching mechanism on the original power supplies. The latching mechanism
protrudes slightly in front, making the power supplies slightly longer in depth. For
the actual dimensions, see "Physical dimensions and weight of power supplies" on
page 129.
Although the model numbers 90-240 VAC SYS for the replacement and original
power supplies are identical, the manufacturing part numbers are different, as noted
in Table 11 on page 18. The manufacturing part numbers are inscribed on the labels
affixed to the top of the power supplies. As well, the manufacturing part numbers for
all installed power supplies display in the output of the show chassis command.
See "Displaying chassis status and temperature readings" on page 57.
Hardware specifications for the power supplies are in Chapter 8, "Hardware
specifications," on page 121.

Power supply LEDs

Each power supply has three LEDs on its faceplate. The LEDs are described in
Table 12.
22
Ethernet Switch s-series Installation and User Guide
Table 12. LED status and meanings
LED Desired State Meaning
AC OK ON - Green
(steady)
DC OUT ON - Green
(steady)
ALM OFF
Abnormal
State
The power supply OFF
is receiving AC
power from an AC
power source
The power supply OFF
is supplying DC
output power to the
chassis
No alarms present Amber
and the power
supply is in normal
operating condition.
Meaning/Action
The power supply is not
receiving power from an AC
power source. You can do
the following:
v Make sure that the
power supply cord is
connected securely to
the wall outlet and the
power supply.
v Make sure that the wall
outlet is rated for
115/120V and 20A. If it is
not, obtain a cable that is
compatibly rated for the
outlet.
v Make sure that the wall
outlet has power.
The power supply is not
supplying DC output power
to the chassis.
If this occurs and the AC
OK is green, then there is a
problem with the power
supply and it must be
replaced.
There is an alarm present
and the power supply is
malfunctioning.
Verify the AC input voltage.