IBM 8852 - BladeCenter H Rack-mountable, Service Manual

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Management modules
See the documentation that comes with each management module for a description
of the LEDs and connectors on the module.
Blower modules
When the amber LED on a blower module is lit, an error has been detected in the
blower or ac power to the blower is not present. The system-error LEDs on the
BladeCenter system LED panels are also lit.
Serial connector
This connector provides direct access to the serial ports on each of the 14 blade
server bays. Use this connector to attach the optional serial port breakout cable and
connect up to 14 local consoles. See the documentation that comes with your blade
server to see if it supports this cable.
Rear system LED panel
The LEDs on this panel provide status information. These LEDs duplicate the
LEDs in the front system LED panel (see “Front system LED panel” on page 6 for
more information).
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BladeCenter H Type 8852, 7989, and 1886: Problem Determination and Service Guide