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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" on page 230 guidelines.
If an error occurs, view the light path diagnostic LEDs in the following order:
1. Look at the control panel on the front of the blade server. See "Blade server control panel buttons and
LEDs" on page 6.
v 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.
v If the blade-error LED is lit, it indicates that an error has occurred and you should proceed to the
next step.
2. If an error has occurred, view the light path diagnostics panel and LEDs:
a. Remove the blade server from the BladeCenter unit.
b. Place the blade server on a flat, static-protective surface.
c. Remove the cover from the blade server.
d. 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.
e. 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 12. 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.
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Chapter 2. Diagnostics
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