IBM BladeCenter HT 8740, Руководство по диагностике и обслуживанию

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Fan modules :
When the amber LED on a fan module is lit, an error has been detected in the fan
module or power to the fan module is not present. The system-error LEDs on the
BladeCenter system LED panels are also lit.
Attention: If more than two fan modules are removed or more than two fan
modules experience a double fan failure, the blade servers will shut down within 1
to 3 seconds.
Alarm panel module :
The alarm panel module provides telecom relays, LED alarm status, and access to
the serial port on each blade server.
v
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 no electrical
current is 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 the rear power connectors.
v
Location: When this blue LED is lit or flashing, it has been turned on by the
system administrator to aid in visually locating the BladeCenter HT unit. If a
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BladeCenter HT Type 8740 and 8750: Problem Determination and Service Guide