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KVM (keyboard, video, mouse) module indicators and
input/output connectors
The KVM module is a hot-swap module that is installed on the rear of the
BladeCenter T unit and is held in place by captive thumbscrews. This module
contains two PS/2 connectors for the keyboard and mouse, a system-status panel,
and an HD-15 video connector.
CRT
MJR
MNR
Thumbscrew
Keyboard
Mouse
Major (MJR) alarm LED
Minor (MNR) alarm LED
Video
Critical (CRT) alarm LED
Location LED
Power LED
System-status LEDs: These LEDs provide status information for the BladeCenter
T unit.
v Power: When continuously lit, this green LED indicates the presence of power in
the BladeCenter T unit. The LED turns off when the power source is interrupted.
Attention: If the power LED is off, it does not mean electrical power is not
present in the BladeCenter T unit. The LED might be burned out. To remove all
electrical power from the BladeCenter T unit, you must disconnect all power
cords from the rear of the BladeCenter T unit.
v Location: This blue LED is for system identification. A system administrator or
servicer uses this LED to locate a specific BladeCenter T unit for service or
repair. You can turn off the location LED through the Web interface or a remote
management console.
Alarm LEDs: These LEDs provide alarm notifications for the BladeCenter T unit.
v CRT (Critical alarm, amber (default) or red): When continuously lit, this LED
indicates the presence of a critical system fault. The system comes with amber
as the default. See the BladeCenter T Management Module User’s Guide for
information on setting the color of this LED.
A critical system fault is an error or event that is unrecoverable. In this case, the
system cannot continue to operate. An example is the loss of a large section of
memory that causes the system to be incapable of operating.
v MJR (Major alarm, amber (default) or red): When continuously lit, this LED
indicates the presence of a major system fault. The system comes with amber as
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.
v MNR (Minor alarm, amber): When continuously lit, this LED indicates the
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.
16 BladeCenter T Type 8720 and 8730: Hardware Maintenance Manual and Troubleshooting Guide