Service manual

Chapter 5 Troubleshooting
50
3. Ensure the NetServer is turned on.
The front panel power-on LED and the power supply LED should be green and the fans should
be on.
4. Turn the NetServer off, wait at least twenty seconds, then turn the NetServer back on to see if
the failure can be cleared.
5. Ensure all PCI boards are installed properly and the processor board is installed in the correct
slot.
The PCI boards must be seated firmly in the slots and any cables must be connected firmly.
Refer to remove and replace procedures.
6. If your NetServer stopped working after you installed a new board, remove the board and turn
on the NetServer.
If your NetServer now works, determine how to set the jumpers and switches on the board if
there are any. If you the new board is preventing the NetServer from powering, on it's apt to
have a serious electrical problem.
7. If your NetServer still does not work, remove all boards and options that you have installed (do
not remove the flexible or hard disk drives) and turn on the NetServer.
8. Add the boards and options one at a time to determine which one is causing the problem.
9. If you have added any memory, ensure the DIMM modules are seated properly in the system
board.
Power goes off on the NetServer and doesn't come back on
When certain critical conditions exist, the NetServer shuts down all power.
NOTE: It is a good idea to run the Event Log Display Utility on the HP Navigator CD-ROM as
part of regular maintenance procedures so that you can check to see if any problems
have been logged to the file. Also, this file needs to be purged at times since the
error log can eventually fill up. Errors are time stamped with either a Real-Time
Clock (default) or the POST Capture time stamp. See the HP NetServer Navigator
CD-ROM, NetServer Utilities menu, for additional information on this feature.
The critical conditions which shut down the NetServer are:
• critical temperature fluctuations or changes
• voltage problems (external AC line)
• power supply failure
If the NetServer powers off, and before you try a restart, do the following:
1. First check to make sure power is getting to the NetServer. Plug a device you know works into
the power outlet.
2. Review the Troubleshooting Checklist to check for basic NetServer integrity.
3. Check for proper ventilation for the NetServer.
The server should have at least six inches of space around the front and back for proper air
flow.
4. Check the system specifications and ensure the environmental temperature and voltage are in
the specified guidelines.
5. Make sure all system fans are working.