HP netserver e 800 Service Manual page 55

Chapter 5
8. If you have added any memory, make sure that the modules are seated properly on the
processor board.
The application or operating system is not responding properly
1. In NetServer models with accessible cache feature, determine if the memory cache feature is
turned on or off.
Memory cache may need to be turned off for some older software. It may also need to be turned
off for those accessory boards that have on-board firmware, and for those boards that use
memory-mapped I/O.
2. If necessary, turn off the memory cache feature. Check the state of memory cache and, if
necessary, disable it:
a. Push F2 during the boot process
b. Go to configuration and turn off Memory Caching
The NetServer stops working (hangs)
Typically, if the NetServer hangs before the end of the POST completes, the problem is probably a hardware
failure. If the NetServer hangs after the POST completes, the problem is probably due to an incorrectly
configured or corrupt driver, operating system, or application program, or a media (disk drive) error.
If the NetServer stops working, try the following:
1. Review the Troubleshooting Checklist before you continue.
2. Turn the NetServer off and unplug the power cords. Wait 30 seconds and plug the power cords
in and turn it on. Verify the failure.
3. If the problem persists, replace the system board.
4. Once a problem has been found with a part, verify that it is the problem (or the only problem) by
reinstalling the part and replicating the error.
The NetServer does not start (boot)
Locate the memory modules (SIMMs/DIMMs).
NOTE
1. Review the Troubleshooting Checklist before you continue.
2. Power the NetServer off and on (rather than using Ctrl-Alt-Del) as it is a more complete system
reset.
3. On NetServers with diagnostic LEDs near the DIMM sockets, note any blink codes.
4. If the POST reports a problem, check the error against the Error Messages and correct the
problem.
5. Verify the video subsystem is configured correctly.
6. Verify the memory DIMMs are all of the same (specified) speed.
7. Verify the memory DIMMs are installed and configured correctly:
a. Make sure only HP-supported DIMMs are used.
The POST error messages reflect which modules are defective and should be
replaced.
Troubleshooting
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