Lenovo BladeCenter HS23E Problem Determination And Service Manual page 24

Fault LED: When this yellow LED is lit, it indicates that a system error has
occurred in the blade server. The blade-error LED turns off only after the error is
corrected.
Power button: Press this button to turn on or turn off the blade server. When the
blade server is turned off, you can press and hold the power button to light the
LEDs of failing components in the blade server.
Note: The power button has effect only if local power control is enabled for the
blade server. Local power control is enabled and disabled through the
Advanced-Management-Module web interface.
NMI button (recessed): The nonmaskable interrupt (NMI) dumps the partition.
Use this recessed button only as directed by IBM Support.
Note: You can also send an NMI event to the selected blade server remotely using
the AMM. For more information, see the BladeCenter Advanced Management Module
User's Guide.
Keyboard/video/mouse (KVM) select button: Press this button to associate the
shared BladeCenter unit keyboard port, video port, and mouse port with the blade
server. The LED on this button flashes while the request is being processed and
then is lit when the ownership of the keyboard, video, and mouse has been
transferred to the blade server. It can take approximately 20 seconds to switch the
keyboard, video, and mouse control to the blade server.
Using a keyboard that is directly attached to the Advanced-Management-Module,
you can press keyboard keys in the following sequence to switch KVM control
between blade servers instead of using the KVM select button:
If there is no response when you press the KVM select button, you can use the
Advanced-Management-Module web interface to determine whether local control
has been disabled on the blade server. See http://www.ibm.com/systems/
management/ for more information.
Notes:
1. The operating system in the blade server must provide USB support for the
2. If you install a supported Microsoft Windows operating system on the blade
Media-tray select button: Press this button to associate the shared BladeCenter
unit media tray (removable-media drives) with the blade server. The LED on the
button flashes while the request is being processed and then is lit when the
ownership of the media tray has been transferred to the blade server. It can take
approximately 20 seconds for the operating system in the blade server to recognize
the media tray.
10
BladeCenter HS23E Type 8038 and 8039: Problem Determination and Service Guide
NumLock NumLock blade_server_number Enter
blade_server_number is the two-digit number of the blade-server bay in which
the blade server is installed. A blade server that occupies more than one
blade-server bay is identified by the lowest bay number that it occupies.
blade server to recognize and use the keyboard and mouse, even if the
keyboard and mouse have PS/2-style connectors.
server while it is not the current owner of the keyboard, video, and mouse, a
delay of up to 1 minute occurs the first time that you switch the keyboard,
video, and mouse to the blade server. All subsequent switching takes place in
the normal KVM switching time frame (up to 20 seconds).