Power Modules - IBM BladeCenter T 8720 Installation And User Manual

v MNR (Minor alarm, amber): When continuously lit, this LED indicates the
USB connectors: There are two USB connectors on the front system-status panel.
You can use these USB connectors to connect two USB peripheral devices without
an external hub. If more devices are required, you can connect an external hub to
any of the built-in connectors.

Power modules

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
v DC out: When continuously lit, this green LED indicates that the output power is
v ! (Error): When continuously lit, this amber LED indicates that there is a error
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BladeCenter T Types 8720 and 8730: Installation and User's Guide
the default. See the BladeCenter T Management Module User's Guide for
information on setting the color of this LED.
A major system fault is an error or event that has a discernible impact to system
operation. In this case, the system can continue to operate but with reduced
performance. An example is the loss of one of two mirrored disks.
presence of a minor system fault. A minor system fault is an error or event that
has little impact to system operation. An example is a correctable ECC error.
AC power module
AC in LED
DC out LED
Error LED
power source is working. If the LED is not lit, it indicates that the input power
source is not present or is incorrect.
present. If the LED is not lit, it indicates that the output power is not present.
condition within the power module.
DC power module
DC in LED
DC out LED
Error LED