HP Integrity rx1600 Operation and Maintenance Guide

Chapter 6
Troubleshooting
Identifying and Diagnosing Hardware Problems
110
Diagnostic LEDs
Four diagnostic LEDs are provided on the display panel of the system. 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 system backup or replacing a component. These diagnostic LEDs are labeled 1, 2, 3 and 4.
• If no management processor card 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.
• If a management processor card is installed, the boot process will be monitored by the management processor card. The
diagnostic LEDs are disabled.
Figure 6-2 Diagnostic LEDs
• The system LED indicates the severity of the error. Check the system LED before proceeding to analyze the sequence of
diagnostic LEDs:
• System LED blinking YELLOW indicates a WARNING.
• System LED blinking RED indicates a FAULT.
• The diagnostic LEDs provide details about the specific error:
• Solid red indicates the failing part or sub-system.
• Off or solid green diagnostic LEDs provide additional details about the failure.
The pattern of illuminated LEDs may be used to identify the category of the fault or warning. For example, if diagnostic LED
one is red, there is a problem with memory. However, if diagnostic LEDs one and two are both red, there is a problem with the
system processor.
If the diagnostic LEDs indicate an error, check the EFI shell command line interface (CLI) cli>sl e to display the system event
log (SEL) for a more detailed explanations of the failure.
The system LED turns off after using the BMC cli>sl e command to read the system event log and the warning or fault
condition is corrected.
System
LED
Power
On/Off LED
Power On/Off
Button
Diagnostics
LEDs
LAN
LED
Locator
Button and
LED
LED 1
LED 2 LED 4
LED 3