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Power modules
The following illustration shows the LEDs on each power module.
Input power LED
Output power LED
The LEDs on each power module indicate the condition of the power module and
fan pack.
Note: The orientation of the power module that is shown in the illustration is for
one of the top power modules. Modules in the bottom power-module bays
are rotated 180°.
v Input power LED: When this green LED is lit, the input from the external power
source connected to the power module is present and within specifications.
During typical operation, both the input power and output power LEDs are lit.
v Power-module error LED: When this amber LED is lit, a power-module failure
has occurred, and the power module is not operating within specifications.
v Fan error LED: When this amber LED is lit, a fan pack has failed and is not
operating within specifications.
v Output power LED: When this green LED is lit, the output from the power
module to the other components and blade servers is present and within
specifications. During typical operation, both the input power and output power
LEDs are lit.
Media tray
The media tray contains the following components:
Power on LED
Location LED
Critical system fault LED
Major system fault LED
Minor system fault LED
USB connectors
Media tray fault LED
v LED panel
The LEDs on the LED panel provide status information for your BladeCenter HT
unit.
Note: You can turn off the location LED through the advanced management
module.
– Power-on: When this green LED is lit, power is present in the BladeCenter
HT unit. When this LED is off, the power subsystem, the power module, or the
LED has failed.
Attention:
If the power-on LED is off, it does not mean that electrical
current is not present in the BladeCenter HT unit. The LED might be
defective. To remove all electrical current from the BladeCenter HT unit, you
must disconnect all power cords from all power input connectors.
Power module error LED
Fan error LED
Chapter 2. BladeCenter HT unit power, components, and indicators
19
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