HP Integrity Server rx4640 manual Troubleshooting Tips, Troubleshooting Methodology

Troubleshooting

Troubleshooting Tips

Troubleshooting Tips

WARNING Before removing a cover to service components that cannot be hot-swapped, always disconnect the ac power cords and unplug telephone cables. Disconnect telephone cables to avoid exposure to shock hazard from telephone ringing voltages.

Disconnect the ac power cords to avoid exposure to high energy levels that may cause burns when parts are short-circuited by metal objects such as tools or jewelry.

CAUTION Do not operate the HP server for more than two minutes with any cover (including power supplies and disk drives) removed. Otherwise, damage to server components may result due to improper cooling airflow.

However, you can safely remove a cover while the HP server is running to remove and replace PCI hot-plug boards. For any other service activity requiring access to the I/O baseboard or power distribution board, power-down the HP server and observe all safety precautions.

Troubleshooting Methodology

Step 1. This is the entry point to the troubleshooting process. Here, you pick from a set of symptoms, ranging from very simple (server LED is blinking) to the most difficult (Machine Check Abort [MCA]) has occurred. The following is a list of symptom examples:

•Server LED blinking

•System Alert present on console

•Server will not power-up

•Server will not boot

•Event/Error Message received

•Machine Check Abort (MCA)

Step 2. This step narrows down the observed problem to the specific troubleshooting procedure required. Here you isolate the failure to a specific part of the server so that you can perform more detailed troubleshooting. For example:

•Problem-Server LED blinking

—System Alert on console?

—Analyze the alert by using the system event log (SEL) to identify the last error logged by the baseboard management controller. Use the iLO MP commands to view the SEL.

Step 3. At this point you will have a good idea about which area of the server requires further analysis. For example, if the symptom was “server will not power-up” then the initial troubleshooting procedure may have indicated a problem with the dc power supply not coming up after the power switch was turned on.

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