IBM 5000 - Manual (Page 22)

Controls and Indicators
The following illustrations identify the indicators located on the back of the server.
1 Power Supply Lights: These green LEDs indicate a power good status for
each of the 175-watt modules in the power supply. If any power supply light
is not illuminated when the Power-On Light on the front of the server is on,
there is a problem with that power supply. The power supply shipped with the
server has two lights, one for each module in the power supply. The optional
additional power supply has one power module and one green LED. See
“Installing or Replacing the Power Supply” on page 71 for more information
about the power supplies.
Tower model
Rack model
Chapter 1. Introducing Your Netfinity 5000 11