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

Option problems

Option symptom
An IBM option that was just
installed does not work.
An IBM option that used to
work does not work now.

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
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BladeCenter JS20 Type 8842: Installation and User's Guide
Suggested action
Make sure that:
v The option is designed for the blade server. See the "Server Support" flowchart on
the cover for information about obtaining ServerProven compatibility information
from the World Wide Web.
v You followed the installation instructions that came with the option.
v You have not loosened any other installed options or cables.
If the problem remains, call for service.
Make sure that all of the option hardware and cable connections are secure.
If the option comes with its own test instructions, use those instructions to test the
option.
If the problem remains, call for service.
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.