Chapter 5 | Troubleshooting |
•voltage problems (external AC line)
•power supply failure
If the server powers off, and before you try a restart, do the following:
1.First check to make sure power is getting to the server. Plug a known working device into the power outlet.
2.Access the System Event Log (SEL) through the front panel LCD display. You can do this when the system is running, or you can do this while the system is powered down, but still plugged in (standby mode).
3.Review the Troubleshooting Checklist to check for basic server integrity.
4.Check for proper ventilation for the server. The server should have at least six inches of space around the front and back for proper airflow.
5.Check the system specifications and make sure the environmental temperature and voltage are in the specified guidelines.
6.Make sure all system fans are working.
7.Boot the HP NetServer Navigator
8.Check the error log and note which errors have occurred that shut down the system.
If you are having voltage fluctuation problems, go to Power Problems.
Note that temperature problems can also be caused by a fluctuating power supply.
Monitor the system to make sure you are not experiencing further temperature and voltage problems.
The server stops working (hangs)
If the server stops working, do the following:
1.Review the Troubleshooting Checklist before you continue.
2.If the system hangs, power the system off and on, as it is a more complete reset rather than using Ctrl+Alt+Del.
3.If the POST find an error, check the connection and/or replace the faulty part.
4.If the problem persists, remove and replace the system board.
5.Once a problem has been found with a part, verify that it is the problem by duplicating the error.
The server powers-off then powers on again by itself
The server has an Automatic Server Restart (ASR) feature that is set to enabled. The ASR feature is used with the NetServer Assistant product. When certain conditions occur the server shuts down all power, then twenty seconds later restarts the server. ASR is enabled as the default. You can disable this feature if you want. To read about the effects of automatic server restart, see the NetServer Assistant product. The conditions that shut down and restart the server are operating system problems that affect the system timers.
The system does not start (boot)
Check that DIMMs are installed on the System Board. If the above are fine, do the following:
1.Review the Troubleshooting Checklist before you continue.
2.If memory problems are being experienced:
a. Power the system off and on as it is a complete reset instead of using Ctrl+Alt+Del.
63