Chapter 5
Troubleshooting
Identifying and Diagnosing Hardware Problems
120
NOTE More detailed information on the server logs is presented in Appendix C, “Utilities,”
on page 167.
Systems without a Management Processor
The server LED states operate the same with servers having the optional iLO MP. See Table 5-3 for more
information.
Diagnostic LEDs
Four diagnostic LEDs are provided on the display panel of the server. Additional diagnostic LEDs are
provided on the system board and are described later in this chapter.
The diagnostic LEDs warn of impending failures or present failures and allow you to take preventive or
corrective action, such as making a server backup or replacing a component. These diagnostic LEDs are
labeled 1, 2, 3 and 4.
• If no iLO MP is installed, the boot progress is monitored by diagnostic LEDs 1 through 4. During the
boot-up the LEDs will turn on in sequence until the EFI prompt is reached.
Table 5-3 Power and System LED States
Power LED System LED State
Off Off Off
On (green) Solid green Running
On (green) Blinking green Booting or running code other than
operating system (boot or diagnostic).
On (green) Blinking yellow (1/sec.) Attention indication
On (green) Blinking red (2/sec.) Fault indication
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