Light Path Diagnostics Panel - IBM xSeries 455 Option Installation Manual

Light path diagnostics panel

The following illustration shows the light path diagnostics panel.
To access the light path diagnostics panel, press on the front of the panel.
For more information about light path diagnostics, see the Hardware Maintenance
Manual and Troubleshooting Guide on the IBM xSeries Documentation CD.
The following table describes the LEDs on the light path diagnostics panel.
Table 1. Light path diagnostics
LED Problem
None An error has occurred and cannot be
diagnosed, or the ASM processor has failed.
The error is not represented by a Light Path
Diagnostic LED.
CPU A microprocessor has failed.
Action
Check the system error log for more
information about the error.
v Check the microprocessor failure LEDs on
the system board.
Note: If you have installed more than one
microprocessor, check the reverse side of
the processor board for lit microprocessor
failure LEDs.
v If a microprocessor error LED is lit, make
sure that the microprocessor is installed
correctly. See "Installing and replacing a
microprocessor and power module" on
page 30 for installation instructions.
If the problem remains, call for service.
Chapter 1. Introduction
9