Service Processor Problems; Light Path Diagnostics Overview; Identifying Problems Using The Light Path Diagnostics - IBM eServer BladeCenter JS20 Type 8842 Installation And User Manual

Service processor problems

Service processor symptom Suggested action
Service processor reports a
general monitor failure.

Light path diagnostics overview

If the system-error LED on the system LED panel on the front or rear of the
BladeCenter unit is lit, one or more error LEDs on the BladeCenter unit components
also might be lit. These LEDs help identify the cause of the problem.

Identifying problems using the light path diagnostics

This section provides the information to identify, using the light path diagnostics,
problems that might arise during installation. To locate the actual component that
caused the error, you must locate the lit error LED on that component.
For example:
A blade server error has occurred and you have noted that the blade server
blade-error LED is lit on the blade-server control panel. You then:
1. Remove the blade server from the BladeCenter unit.
2. Place the blade server on a flat, static-protective surface.
3. Remove the cover from the blade server.
4. Press and hold the light path diagnostics button to relight the LEDs that were lit
See "Light path diagnostics table" on page 92 for:
v An illustration that shows the location of the light path diagnostics button and
v A table that describes the error LEDs and the actions that you should take if
1. If the blade server is operating, shut down the operating system.
2. If the blade server was not turned off, press the power-control button (behind the
blade-server control-panel door) to turn off the server.
3. Remove the blade server from the BladeCenter unit.
4. Wait 30 seconds and reinstall the blade server into the BladeCenter unit.
5. Restart the blade server.
If the problem remains, call for service.
before you removed the blade server from the BladeCenter unit. The LEDs will
remain lit for as long as you press the button, to a maximum of 25 seconds.
error LEDs
these LEDs are lit
Chapter 10. Solving problems
91