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Note: The control panel door which normally covers the LEDs and power-control
Activity LED:
Location LED:
Information LED:
Blade error LED:
Power-control button:
Media tray select button:
Power on LED:
NMI reset button
The blade error LED, information LED, and location LED can be turned off through
the Advanced Management Module Web interface. For additional information about
errors, see "Problems indicated by the front panel LEDs" on page 62.
System board LEDs
The QS22 blade server has status LEDs on the system board to indicate the health
of various components. Some are within the light box while others are in different
locations. A lit LEDs indicates an error condition. Complete information about the
LEDs can be found in the Problem Determination and Service Guide.
button is omitted for reasons of clarity.
This green LED lights when there is network activity.
This blue LED is turned on remotely by the system administrator to assist in
locating the blade server. The location LED on the BladeCenter unit lights
at the same time.
This amber LED lights to indicate that information about a system event has
been placed in the Advanced Management Module Event Log. The
information LED remains on until turned off by Advanced Management
Module or through IBM Director Console.
This amber LED lights when a system error has occurred in the blade
server.
Press this button to turn the blade server on or off. The power-control
button only has effect if local power control is enabled for the blade server.
Local power control is enabled and disabled through the BladeCenter
Advanced Management Module Web interface.
This button associates the shared BladeCenter unit media tray (DVD/CD
drive and USB ports) with the blade server. The LED on the button flashes
while the request is being processed, then lights when the ownership of the
media tray has been transferred to the blade server.
It can take approximately 20 seconds for the operating system on the blade
server to recognize the media tray.
This green LED indicates the power status of the blade server as follows:
v Flashing rapidly - The service processor on the blade server is
communicating with the BladeCenter Advanced Management Module.
v Flashing slowly - The blade server has power but is not turned on.
v Lit continuously (steady) - The blade server has power and is turned on.
v Not lit. Either the BladeCenter unit is powered off, or a power failure has
occurred on the blade server or the BladeCenter unit.
If the operating system has been installed, pressing the button with a paper
clip or pin causes the operating system to call the Linux kernel debugger.
Chapter 2. Power, controls, and indicators
11
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