Leds; Diagnosing Problems Using Diagnostic Leds - IBM 8677 - BladeCenter Rack-mountable - Power Supply Installation And User Manual

Symptom
An IBM optional device does
not operate correctly.

LEDs

On the BladeCenter system, the diagnostic LEDs consist of the LEDs on the front
and rear of the BladeCenter unit and on the front of the modules and blade servers.
If the front or rear system-error LED of the BladeCenter unit is lit, one or more error
LEDs on the BladeCenter components also might be lit. These LEDs help identify
the cause of the problem.

Diagnosing problems using diagnostic LEDs

To identify the component that is causing the error, locate the lit error LED on that
component.
The following example shows how to use the LEDs to diagnose a system error:
1. Note that the BladeCenter system-error LED is lit on the system LED panel.
2. Locate the module or blade server that also has a lit error LED (see
38
BladeCenter E Type 8677: Installation and User's Guide
Suggested action
v Make sure that all of the hardware and cable connections for the device are
secure.
v If the device comes with test instructions, use those instructions to test the device.
If the problem remains, call for service.
"BladeCenter components, controls, and LEDs" on page 14 for the location of
error LEDs; see the documentation that comes with your blade server for the
location of error LEDs on the blade server).
v If the component is a module, replace the module.
v If the component is a blade server with its system-error LED lit, follow the
instructions in the documentation that comes with the blade server to isolate
and correct the problem.