Light Path Diagnostics - Lenovo 7X18 Maintenance Manual

For more information about working with events from XClarity Administrator, see:
http://sysmgt.lenovofiles.com/help/topic/com.lenovo.lxca.doc/events_vieweventlog.html
Lenovo XClarity Controller event log
The Lenovo XClarity Controller monitors the physical state of the server and its components using sensors
that measure internal physical variables such as temperature, power-supply voltages, fan speeds, and
component status. The Lenovo XClarity Controller provides various interfaces to systems management
software and to system administrators and users to enable remote management and control of a server.
The Lenovo XClarity Controller monitors all components of the server and posts events in the Lenovo
XClarity Controller event log.
Figure 140. Lenovo XClarity Controller event log
For more information about accessing the Lenovo XClarity Controller event log, see:
"Viewing Event Logs" section in the XCC documentation compatible with your server at
https://
sysmgt.lenovofiles.com/help/topic/lxcc_frontend/lxcc_overview.html

Light path diagnostics

Light path diagnostics is a system of LEDs on various external and internal components of the server that
leads you to the failed component. When an error occurs, LEDs are lit on the front operator panel on the front
of the server, then on the failed component. By viewing the LEDs in a particular order, you can often identify
the source of the error.
The following illustration shows the light path diagnostic LEDs for the server, which are located on the
operator information panel.
Figure 141. Front operator panel
ThinkSystem SR850 Maintenance Manual
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