Viewing the light path diagnostic LEDs

After reading required safety information, look at the control panel to determine if the LEDs indicate a sub-optimal condition or an error.

View the system LEDs remotely through the Advanced Management Module Web interface. The main LED page shows the external LEDs on the blade server. The internal blade LEDs are also available through a blade hyperlink from the LED page. This enables you to see the status of the internal LEDs on the blade server without having to turn off the blade server, remove it from the chassis, and activate the light path indications.

Before working inside the blade server to view light path diagnostic LEDs, see theSafety topic and the Handling static-sensitive devices guidelines.

If an error occurs, view the light path diagnostic LEDs in the following order:

Look at the control panel on the front of the blade server. See Blade server control panel buttons and LEDs.
- If the information LED is lit, it indicates that information about a suboptimal condition in the blade server is available in the management-module event log.
- If the blade-error LED is lit, it indicates that an error has occurred and you should proceed to the next step.
If an error has occurred, view the light path diagnostics panel and LEDs:
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 switch (blue button) to relight the LEDs on the expansion unit if you are examining a PS704 blade server. If the "Check card below" LED is lit, remove the expansion unit and examine the base unit LEDs.
5. Press and hold the light path diagnostics switch to relight the LEDs that were lit before you removed the blade server from the BladeCenter unit. The LEDs will remain lit for as long as you press the switch, to a maximum of 25 seconds.
The following figure shows LEDs on the PS703 blade server.
Figure 1. LED locations on the system board of the PS703 blade server

The following figure shows LEDs on the base system board of the PS704 blade server.
Figure 2. LED locations on the base system board of the PS704 blade server
The following figure shows LEDs on the expansion-unit board of the PS704 blade server.
Figure 3. LED locations on the board of the PS704 expansion unit

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