IBM BladeCenter JS12 Problem Determination And Service Manual page 20

If there is no response when you press the keyboard/video select button, you can
use the Web interface of the management module to determine whether local
control has been disabled on the blade server.
Media-tray select button: Press this button to associate the shared BladeCenter
unit media tray (removable-media drives and front-panel USB ports) with the
blade server. The LED on the button flashes while the request is being processed,
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.
If there is no response when you press the media-tray select button, use the
management module to determine whether local control has been disabled on the
blade server.
Note: The operating system in the blade server must provide USB support for the
blade server to recognize and use the removable-media drives and USB ports.
Information LED: When this amber LED is lit, it indicates that information about a
system error for the blade server has been placed in the management-module
event log. The information LED can be turned off through the Web interface of the
management module or through IBM Director Console.
Blade-error LED: When this amber LED is lit, it indicates that a system error has
occurred in the blade server. The blade-error LED will turn off after one of the
following events:
v Correcting the error
v Reseating the blade server in the BladeCenter unit
v Cycling the BladeCenter unit power
Power-control button: This button is behind the control panel door. Press this
button to turn on or turn off the blade server.
The power-control button has effect only if local power control is enabled for the
blade server. Local power control is enabled and disabled through the Web
interface of the management module.
Press the power button for 5 seconds to begin powering down the blade server.
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JS12 Type 7998: Problem Determination and Service Guide
Where blade_server_number is the two-digit number for the blade bay in which
the blade server is installed. When you use some keyboards, such as the
28L3644 (37L0888) keyboard, hold down the Shift key while you enter this key
sequence.