Operations Guide, Fourth Edition - HP Integrity rx1620

The critical conditions that may shut down the server are:
• Critical temperature fluctuations or changes
• Voltage problems (external AC line)
• Power supply failure
If the server powers off, and before you try a restart, do the following:
1. Examine the display panel LEDs for warning or fault indications. The system LED will be
flashing yellow with a warning indication and flashing red with a fault indication.
2. Examine the four diagnostic LEDs for indications of specific warning or fault indications.
The diagnostic LEDs present patterns that categorize the source of the warning or fault.
3. Display and examine the system event log (SEL) and forward progress log (FPL) for further
information relating to warning or fault indication.
4. First check to make sure power is getting to the server. Plug a known working device into
the power outlet.
5. Check for proper ventilation for the server. The server should have at least three inches of
space around the front and rear for proper airflow when installed in a rack.
NOTE: Temperature problems may be caused by a fluctuating power supply.
6. Check the system specifications and make sure the environmental temperature and voltage
are in the specified guidelines.
7. Monitor the system to make sure you are not experiencing further temperature and voltage
problems.
Troubleshooting and FRU identification
Once you have determined the current system state, you must troubleshoot the system to
determine what the problem symptoms are and what repair actions to take.
Use this guide to assist you in repairing the system by matching the problem symptom with the
appropriate troubleshooting step.
76 Troubleshooting